Doug, it's always a pleasure to see your meticulous work restoring these venerable old amps and giving them a new lease of life with really simple fixes. Makes me wonder how many modern digital devices will still be running in fifty-six years. I don't imagine anyone will be replacing FPGA chips in 2077, all those broken Kempers will be in landfill and I imagine the 1965 Fender Deluxe will just need another recap.
It doesn't take much corrosion from humidity to destroy most modern devices with surface PCB mounted components. I left a cheap pedal in my garage tool chest for 9 months by mistake. That was enough to ruin it. I get the feeling modern products are designed with the land fill in mind.
The chassis plater must have put that batch in and then took a long lunch. Lol. I was yelling "check the 5y3" I can't believe you couldn't hear me. Good to see you back on the tube.
Another master class from Uncle Doug. Always appreciate the sharing of your knowledge in maintaining this era of sound reproduction for musicians - still unbeatable, to my ears at least.
Man, I got more out of your Tweed talk than I have gotten together on my own in years. Better understanding circuits vs "well, let's see what this does" is a step forward.
Uncle Doug is a jewel of a human being. These videos are a source of not only education but entertainment and comfort as well. I’m starting to obsess about old projectors, stereo consoles, vintage PA systems and discarded organs. I am learning so much!! No news or sports for me. It’s 100% Uncle Doug... and maybe some Unsolved Mysteries.
Uncle Doug thank you. I’m sure you’ll be glad to hear that my daughter and I have “sequestered our test subject” Toby to numerous Milk Bone tests as an homage to the noble Rusty. It appears Toby prefers beef.
I miss your preliminary cat scans of all incoming items. Someone is slacking off. In all seriousness thanks for your educational uploads. Your explanation while going through the schematic helps me understand immensely.
Ya I have to agree with the consensus Doug...you are a good neighbor and I'm glad people that can afford to give..give to someone like you n jack n casey... bless ur hearts
Uncle Doug, your intense knowledge coupled with your ability to teach makes for possibly the most bang for your lack of buck on the entire internet. This is the most thrilling kind of thing for me, youve possessed me to collecting old components, and I think I may start with designing either a radio or a phono preamp.
Always happy to see a new vid pop up from you...I've been gigging with a 1965 Bandmaster head and it's just fantastic... amazing how almost all the gear from that era (and before) was just so 'right'
Going to save for when I'm tucked in tonight ... on opening it RUclips asked why I'd like the video ... I selected Informative, Entertaining and Calming. Your videos do sooth me.
Excellent video Uncle Doug !! I will/can use this as a reference for years to come. I love this amp !! I purchased one used in 1980 - and it has been my amp of choice ever since !! Especially loved the troubleshooting methodology on the reverb and tremolo circuits !! {:>)
You... dear sir, are a gifted teacher. Would have transferred schools to have been an algebraic student of yours. Your demeanor and clarity of explanation is like a well designed transmitter. I so enjoy your lessons, the humor, and the furry kids.
First part is great. But second part is like walking thru a museum!. Nice and clear explanations, even for a doctor in electronics engineering like me!. You are a fabulous teacher, the one all of us always need to have. Loud, clear and precise. God bless you, Doug.
I had a very busy day lined up and while I would usually watch a new Uncle Doug vid in the morning while sipping coffee I had to wait until after dinner to enjoy this one while sipping a beer. Thanks Doug.
Thanks so much for the wonderful videos, the "part 2" feature where you delve into the circuit changes and differences in recent videos is like finding gold for me! Please keep it up, no one has helped me understand the changes Fender made through the years and the benefits/drawbacks of each better than you!
Just discovered your video. Younger, we just purchased the amps not thinking about how they were designed. I will be much more appreciative and knowledgeable about the Fender amp! Thank you very much. I love the audio at the end.
Thanks for the teaching in part two. Great to see you fixing things, but the real treasure is your teaching. You are passing down so much more than a refurbished amp to the owner. That's the real gift to the rest of us. Thank you - and thanks to those who have sent along such projects to inspire you to take us further in the knowledge.
Doug I love your channel. You are so real, very well spoken, love animals, and a true craftsman. I repair and build amps in the Florida panhandle. I moved here from Chicago where I originally started my amp repair venture. I wanted to make a suggestion regarding something that I’ve found useful with the NFB loop. NFB is my favorite thing to disconnect or modify as well! I’ve found that when NFB is completely disconnected, the low end in some amps can become overbearing and farty. So if you use a DPDT switch, you can ALSO reduce low end with the other pole of the switch. I do this by: reducing Rk on the power tubes, or on a previous gain stage. It should have more positive affect if it’s done earlier in the circuit before all the compression or overdrive is created. Keep up the great work!! I’ve seen so many so-called techs that have no clue what they’re doing and they don’t even understand how the circuit works… they just use the shotgun approach and start replacing parts. It’s so refreshing to watch your videos and hear you use the correct terminology IE grid leak, grid stopper, cathode bypass cap etc 👌 BTW my business is called Fretgood Amps LLC and I’m located just outside Pensacola, FL in Gulf Breeze FL.
Thanks so much for the very kind and helpful comments, Neo. I agree that the complete elimination of NFB seems to affect different circuits in different ways, and can definitely be overpowering in some cases. I've been experimenting with solutions, including the insertion of a lower value resistor rather than complete disconnection......and will definitely include your suggestion in my quest for a good solution. Thanks.
Gidday uncle Doug! Well done mate! Finally, someone on yt has given a full & proper explanation of the correct, SAFE method of connecting up the incoming mains power through to the power transformer! I'm so glad it was you! 😊👏👏👏! You fault finding procedure was clear & precise, & I especially liked your 'trick' of hooking up your test speaker to the reverb driver transformer output to test that stage. What a great idea! It's a shame a new tank was required though, but I guess reverb tank output transformers are just too tiny & fragile to try to work on aren't they? The very few I've seen appear to be, with ridiculously fine wires, & glued-in little magnets in them that may need careful alignment & calibration. They're not expensive so a replacement was the wisest choice, despite you having found the broken wire on the input side. I was just wondering if the customer may have requested an EARTHED mains auxillary output socket as well as the removal of the death capacitor, he wasn't very clear on this. I really liked your analysis & discussion of the development of the Fender circuit over the models too. Another stellar video of yours that I could easily watch again!
Thanks so much, Neville. The only unobtrusive way to provide a grounded auxiliary output is to use an intermediate 3 to 2 prong adapter with a ground wire to connect to the chassis. So few people use the auxiliary outlet that it is rarely an issue
I have been waiting many moons for this one. I started with you back when you built a Champ out of spare parts just lying around your shop... about 7 years ago? Wow. Internet-time sure flies. You are part of the reason I felt more confident in investing in a Tweed 5E3 a few years ago... I felt safer about it because I understood more. When I saw you do your first blackface circuit really in depth... I was captivated because right after music school maybe 2-3 years after high school, I sold all my 80s Fender gear and adding that up, spent all my savings and some money I needed for gas for my first professional amp. I've had it for decades and my clients still ask for it. The Tube Chart says "ND" or 14-4 .... April 1964. And it is a Fender Deluxe Reverb amp from the first run. I play every kind of music with it... if I plug it into a 4x12 using a simple dirt box into the normal channel I can cover for an AC/DC cover gig... and if I use the Vib. Channel with a lot of treble I can play Buck Owens late into the night for the dancers. I got the advice early on to "just get a black face Fender" .. but when I heard the Deluxe Reverb, my young inexperienced ears knew it was special immediately. It loves every guitar I try. ..in January of 2020 a good engineer said, "Lets print that reverb... I don't have anything in my rig that can do that..." that' was a 56 year old tank at that time. I've had it for more than half it's existence (and I might be buried with it. ) I have the original JBL that I can swap back in if I get country gigs, but right now I have something very nice and alnico in there. As hinted to, over the years I have more amps now, but the DR64 is still my main tone tool. - This video and your careful trouble shooting makes me feel much more involved and closer to my lifelong pal.. but I am so clear how much you have already taught me because I already know what to expect to see between the schematic and your shots of the pencil on the actual circuit. I know the nicknames for those brown caps.. I recognize the various resistors and caps without realizing it. I get happy when I know you cleaned the tube sockets and sprayed out the pots. I ask for that regularly...I have had and do have some great techs in Los Angeles to keep in it in perfect shape. As I suggested, it's watching your videos that makes me much more comfortable talking details with these repair professionals. I see the common problems you show us and I always ask how those areas are when I bring it in. I sold off my Mexican silver reproduction foot switch and and shelled out some higher dollars for a stock vintage black foot switch. Perfect. I will be watching this video more than once. I will also watch anything you do on the brown era.. and most especially stay tuned for the part 2 here and any other discussions you have about Tweed Deluxes .. esp. the 5E3. Thank you for demystifying something that is a part of every day of my life. - Jensen Bell
Great teaching moments indeed. I just checked my MIM footswitch and sure as $hit, it came from the factory with the sticker turned upside-down lol. I came here looking for the fix for the VIB ticking issue and hit like and subscribe. Great video in all respects!!
Chapeau Uncle Doug and Jack - what a great video ! That's the way of perfect trouble-shooting you are teaching all viewers. But needs so much of experience. Thank you very much, God bless you !
Thanks Uncle Doug. I am about building a Deluxe Reverb Kit from TAD. Wish I lived nextdoor to you........ Would make things easier. Your vids are so well made and informative. Cheers!
Hi Uncle Doug. Congratulations on reaching 💯K subscribers. A real testament to your hard work, expertise and high quality content. When I studied electronics, valves /tubes were off the curriculum. Your videos have really helped me increase my knowledge in this area. Thank you !
Yet another fantastic video Doug. I have been wanting to watch it for days and days but I didn’t have time until now (some 5 days after it was posted). As you know we lost our beloved Bichon Frisée Max back in October last year and we have been desperately waiting for our breeder to have a litter. Eventually a litter was born and we had to travel to the other end of the country to collect our new baby. We got home on Sunday evening and life has been a blur ever since. Our home is a happy place again and we are enjoying our puppy so much. She is wild, active and so playful - i.e. everything a puppy should be at her age. Hope that you and the boys are keeping well.
Thanks so much, Robin. Jack was our replacement for a beloved, adopted feral kitty who passed away due to kidney problems after many years of wonderful companionship. His vibrant personality really helped us get over the loss, as I hope your new puppy helps you.
@@UncleDoug We have had many rescue cats over the years and they have been fantastic. One of them was just left behind when a neighbour moved house. She was only about 7 months old and pregnant. We gave her a home and we also kept one of the kittens, whilst making sure the other 3 went to really good homes. You would think that she knew that we had saved her and was always a house cat and never wanted to go out once she adopted us. Still miss them so much!!. Puppy settling in great and is already responding to her name. Take care and thank you for responding to my comments. Your channel really does make a difference to people.
Uncle Dough; Thanks for a new, and as usual, very uplifting video experience🙏🏻 Also thank you your beautiful instructional, but kind Comments 🙏🏻😉 Thx Uncle Dough🙏🏻😉
Thanks Uncle Doug. Great informative video as usual. When I was a lot younger we used Simpson 260's in the test lab and were advised not to leave them on 'resistance' when not in use. Be well and best to the cats too.
Really enjoyed this one. great watching the methodical testing and fault finding, with the fault on the connection to the pot had guessed it was a wiring fault on the phono,
Surprising that there were that many broken wires--reminds me of my old Kustom 250B. Sequential trouble trouble shoot works every time. Those Quebec treats are great. I love 'em !!
Your method of rectifying the tremolo and reverb problems is an excellent example of how to track down a fault. Start at the beginning then work your way through. I also see no point in the jack for an external speaker, especially if you unplug the internal speaker because the jack contact shorts the O/T secondary. So you would have to use the internal jack anyway. Mr. Fender could have saved a few cents there. I noticed that the TJ2565 stamp on the transformer matches that on the chassis, so maybe they did just use what they had in stock. Thanks for the hour and a half extravaganza. Regards, Jeff.
Greetings Uncle Doug! Thanks for another great video. I have very good experience with repairing faulty spring reverb transducers. Many times one end of the transducer's tiny wire got broken. All you got to do is to carefully remove the tape that cover the wire and carefully take out one winding from the broken end. Then carefully wind the wire across the transducer pin connector and solder it. Put back the protective tape the your reverb tank is good to go!
Also it seems like the audio demonstrations recorded too hot (from the mic / gain on the computer input, not the amp). When recording to a computer the max peak level of our input should be not over minus 10db on our DAW meters. The reason for that is that our DAW using scale of dbfs (digital full scale) while analog VU meters using a different scale of dbu. So when your analog VU meter shows 0db the meter on your DAW should display minus 16 dbfs. Since in analog audio we love when the needle jumps over the 0VU on our analog gear we can set our max peak level to minus 10 dbfs. Recording digital audio with this method will bring you better results with no digital clipping. Here's a table with a comparison between VU meter to a dbfs meter. www.gearslutz.com/board/attachments/mastering-forum/166956d1270675927-dbu-dbfs-analogue-digital-scale.jpg
Steve here from Covid free Victoria Australia(were shaking hands again LOL) welcome back Doug always great when there's a new video from the maestro from the lone star state, got to get rid if those Illinois Capacitors I spend my life getting them out of Fenders. I have a 1970 ish Traynor YB1 on the bench currently, doing much the same work 3 cord cable it has US power so running off a convertor 240 -120 but always good to see the Master at work to show us the way and looking forward to the next one Stay Safe Doug and as always greetings and best wishes from down under
Thanks for the Education Uncle Doug ! You are a gifted teacher man ! God Bless and I'll be watching many more of your knowledge filled videos. You Truly do great presentations, and we are all appreciative for how you share your passion for Analog Audio with us who are still enthralled with the subjects you present. Thanks eternal.
Yes! I’ve worked on one of these, easily my favorite repair I’ve done to date, a good cleaning, new f+t and sprague caps, new old stock tubes and a new trem bug was all it needed. What beautiful amps! The voltage is pretty high for 6v6’s but the bias pot makes biasing a breeze! Thanks for the video, Doug.
Another great Fender amp in Uncle Doug's bench! Thank you for one more great video. Despite there being plenty of technical series in the channel and schematic walk throughs, I don't think it ever gets old and I really enjoy these additions in the end of your repair videos. All the the best to you, Rusty, Jack and to all your friendly sniffing companions.
Great Video Uncle Doug. Beautifully put together in easy to digest detail. The segment on the evolution of the Fender Tweed Deluxe designs was through and fascinating. Thank you!
this amp sounds very nice ,enjoyed the video especially the troubleshooting on tremola and reverb very good info here ,thanks Uncle Doug for another awesome video!!!
This Deluxe Reverb has the somewhat rare "A division of Colombia Records" instead of "Columbia Records" labeling on the back panel. The misspelling of Columbia was the result of the rush to switch over to CBS control. This was corrected around August 1965. Also, FYI, since the 12ax7 tremolo driver tube doesn't pass any signal, any used/cheap 12ax7 will work there as long as it oscillates. If you have a vintage Telefunken, Mullard or RCA there, it's much better used somewhere else and is WAY overkill! Thanks for the fantastic video Uncle Doug!
Wow, thanks for the tip on checking these Fender foot switches! Sure enough, I checked mine and it's also wired backwards (shielded wire to vibrato button instead of reverb). I'm re-soldering the leads like you suggested. Learning a lot from your videos... :)
As always great video. Loving the part two more and more. I’ve loved the car parts two as well but this once are highly educational. No matter what I know I hear something new each time. Thanks Uncle Doug.
Thank you Uncle Doug for another excellent repair video. I'm probably the worst guitarist in any room I walk into but I would love to stumble into one of the amps that I could give a forever home. You can't beat that tone. Cheers!
I’m home recovering from Coronavirus and making good use of my time by watching your videos to help me get to the next level. Thanks so much, Doug! I missed seeing Rusty in this video, btw.
This couldn't be more timely! My only store bought tube amp is a Hot Rod Deluxe and it's been begging me to rip out the green board and hand wire it up. It a little different that this original but this should get me 90% of the way there. *Grabs popcorn & beer*
Great video Uncle Doug, and good to have you back! I was starting to have withdrawal symptoms ;-) I have to chuckle when I think about all the old Fender amps I have owned since the late 60's. Unfortunately I wasn't smart enough to hold on to any of them. Now they are just fond memories.
Saving this one for watching later, but wanted to say it's great to see you post a video. Sounds like a lot of weird weather recently in Texas, and was worried that you were caught up in it.
I saw this posted this morning and it's been killing me that I can't watch it until tonight. 90 minutes of Uncle Doug goodness! I was hoping that amp repair would get me all of the chicks, lol
Another great repair video Doug! I have a few of the double foot switches and you're right, they are all wired with the shielded wiring to the vibrato! Guess I need to get the soldering iron out. 🎸 Nice take on Rock and Roll Hoochie Koo and Midnight Rambler!
Hey Uncle Doug, I have been a sub of W2AEW for many years. He is very knowledgeable and does nice work, like you. I'm nothing compared to W2AEW, but, I build little FM transmitters, TX, just for fun and always get resonance, (Tank Circuit). Be good, have fun, C.
I replaced the reverb tank in my marshall vs100 with a mod. Sounds fantastic in my opinion. This video makes me want to go set it up and get my surf rock on
Uncle Doug, you are a national treasure. Even international, should I say. Greetings from Italy
Wow....thanks so much, Giuseppe :)
Likewise, from Somerset UK via Scotland. All the best to you and yours, from mine and me, U Doug. Rab 🍻 😎
Totally agreeing here in Enschede, the Netherlands
Uncle Doug, I enjoy every video. I have learned a lot with you. Thanks a lot. Greetings from Argentina
Greetings from Regensburg, Germany!
Pisonic and Uncle Doug are the best amp techs the gods have allowed 🙏 many thanks 👌
Psionic
Thanks, Josh :)
Doug, it's always a pleasure to see your meticulous work restoring these venerable old amps and giving them a new lease of life with really simple fixes. Makes me wonder how many modern digital devices will still be running in fifty-six years. I don't imagine anyone will be replacing FPGA chips in 2077, all those broken Kempers will be in landfill and I imagine the 1965 Fender Deluxe will just need another recap.
I tend to agree, Frank, and it's one reason that I work on them......they deserve it ;)
It doesn't take much corrosion from humidity to destroy most modern devices with surface PCB mounted components.
I left a cheap pedal in my garage tool chest for 9 months by mistake. That was enough to ruin it.
I get the feeling modern products are designed with the land fill in mind.
The chassis plater must have put that batch in and then took a long lunch. Lol. I was yelling "check the 5y3" I can't believe you couldn't hear me. Good to see you back on the tube.
I often find myself going back and watching all of your old videos to learn something new.
Glad to hear it, VTA :)
I assume I'm not the only person to hope that lots of things are wrong with the amp so the video is longer?
I appreciate the thought, Daniel, but these videos are getting pretty darn long as it is. The next one to be posted is almost 90 minutes !!!
@@UncleDoug 90 minutes is pretty long, but that just means we gain more of your knowledge in one video. Luvin' it.
@@UncleDoug I'll be waiting for that one as I'll bring my laptop upstairs in the kitchen while I cook supper ;=))
@@UncleDoug 👍 😎
Don't care how long they are!!
Another master class from Uncle Doug. Always appreciate the sharing of your knowledge in maintaining this era of sound reproduction for musicians - still unbeatable, to my ears at least.
Thanks so much, Spud.
Another great video. No wonder they call you Sherlock Ohms.
Thanks, Brendan. That's a good one :)
or.......Dr Watts son.
W2EAW is a fellow ham and a super tech. Thanks for another great video.
He has one of the best YT tech channels on the air. Jack and I hold him in high esteem :)
Man, I got more out of your Tweed talk than I have gotten together on my own in years. Better understanding circuits vs "well, let's see what this does" is a step forward.
That's good to hear, AZ :)
Uncle Doug is a jewel of a human being. These videos are a source of not only education but entertainment and comfort as well. I’m starting to obsess about old projectors, stereo consoles, vintage PA systems and discarded organs. I am learning so much!! No news or sports for me. It’s 100% Uncle Doug... and maybe some Unsolved Mysteries.
Wow....thanks so much, Michael. Best of luck with your projects.
Uncle Doug thank you. I’m sure you’ll be glad to hear that my daughter and I have “sequestered our test subject” Toby to numerous Milk Bone tests as an homage to the noble Rusty. It appears Toby prefers beef.
I miss your preliminary cat scans of all incoming items. Someone is slacking off.
In all seriousness thanks for your educational uploads. Your explanation while going through the schematic helps me understand immensely.
You're welcome, MiS......glad the videos are helpful.
I don,t usually watch amp repair but you do thorough examination of the equipment good stuff.
Thanks, Michael :)
your adoration for the feline species is heartwarming,,,,love those critters Uncle Doug
Thanks, Tom. Yes, we do :)
after watching your videos I can't feel satisfied with anyone else's and wanted to thank you for sharing your vast information
You're quite welcome, Gary. Thanks !!!
That's a very nice sounding amp. Good job Uncle Doug.
Thanks, Zack.
Ya I have to agree with the consensus Doug...you are a good neighbor and I'm glad people that can afford to give..give to someone like you n jack n casey... bless ur hearts
Thanks so much, IA :)
Best tube amp videos on-line! Thank you!
Wow, thanks, Orvil.
Uncle Doug, your intense knowledge coupled with your ability to teach makes for possibly the most bang for your lack of buck on the entire internet. This is the most thrilling kind of thing for me, youve possessed me to collecting old components, and I think I may start with designing either a radio or a phono preamp.
Thanks for your very kind words, Grant. I hope your enthusiasm is rewarded with success in all your projects..
I love your videos .
Thanks, Moss.
@moss1transcendant Me to 😉
Uncle DougI , for some reason I love troubleshooting. You're approach is perfect.
I do too, Brad. It's a logical and (hopefully) rewarding process.
Always happy to see a new vid pop up from you...I've been gigging with a 1965 Bandmaster head and it's just fantastic... amazing how almost all the gear from that era (and before) was just so 'right'
Amen, Ricky......I think we are all in agreement :)
Going to save for when I'm tucked in tonight ... on opening it RUclips asked why I'd like the video ... I selected Informative, Entertaining and Calming. Your videos do sooth me.
That's great to hear......as long as soothing does not equate to boredom ;)
Excellent video Uncle Doug !! I will/can use this as a reference for years to come. I love this amp !! I purchased one used in 1980 - and it has been my amp of choice ever since !! Especially loved the troubleshooting methodology on the reverb and tremolo circuits !! {:>)
Thanks so much, Donald. It's great to hear that the video was helpful and informative :)
You... dear sir, are a gifted teacher. Would have transferred schools to have been an algebraic student of yours. Your demeanor and clarity of explanation is like a well designed transmitter. I so enjoy your lessons, the humor, and the furry kids.
I'm really glad to hear that, Y. Thanks !!
That amp is damn good sounding!
Thanks, AG :)
What a wonderful resource this is!.... Thankyou!.
Glad to hear it, GB :)
Uncle Doug oh I see you've been experienced, not necessarily stoned but beautiful.
"" it's flashing like a Jimi Hendrix concert in there" lol
The little bug in the bedroll has some wild parties :)
Your delivery on the high grade weed and ......"we can only hope" is classic. Your vids are awesome, thank you!!
Thanks for your very nice comments, Ireland. So glad you enjoy our videos :)
There should be a statue of you somewhere. Amazing as always.
Thanks so much, Ryan :)
@@UncleDoug I agree. A statue commemorating the brilliance of Uncle Doug.
First part is great. But second part is like walking thru a museum!. Nice and clear explanations, even for a doctor in electronics engineering like me!. You are a fabulous teacher, the one all of us always need to have. Loud, clear and precise. God bless you, Doug.
Wow, thanks so much, FW. We really appreciate it :)
I live in Ohio, and all I got sent was a Solid State Crate!! But I fixed it anyway.
Somebody had to do it, DK :)
I had a very busy day lined up and while I would usually watch a new Uncle Doug vid in the morning while sipping coffee I had to wait until after dinner to enjoy this one while sipping a beer. Thanks Doug.
As long as you were sipping, Martin, all is well ;)
That Deluxe Reverb sounds fantastic. Has that wonderful classic Fender sound. Magnificent job Uncle Doug! Enjoyed this video.
Thanks so much, Glenn. Glad to hear it :)
Man, Jack's guitar playing has really come up in recent videos. Must be all the primo catnip he's been into lately...
That and the lessons he's been receiving from KC......a feral musical prodigy.
It's great day for America! 🇺🇸
Uncle Doug and Jack teaching us all we need to know about Life the Universe, and Everything...
Cheers 🍻
We do our best, James :) Thanks !!
Thanks so much for the wonderful videos, the "part 2" feature where you delve into the circuit changes and differences in recent videos is like finding gold for me! Please keep it up, no one has helped me understand the changes Fender made through the years and the benefits/drawbacks of each better than you!
You're quite welcome, Davy. I'm glad you enjoyed it.
Just discovered your video. Younger, we just purchased the amps not thinking about how they were designed. I will be much more appreciative and knowledgeable about the Fender amp! Thank you very much. I love the audio at the end.
That's good to hear, Richard. You're welcome :)
Thanks for the teaching in part two. Great to see you fixing things, but the real treasure is your teaching. You are passing down so much more than a refurbished amp to the owner. That's the real gift to the rest of us. Thank you - and thanks to those who have sent along such projects to inspire you to take us further in the knowledge.
Thank you for your very nice comments, Shalman. We really appreciate them :)
Doug I love your channel. You are so real, very well spoken, love animals, and a true craftsman.
I repair and build amps in the Florida panhandle. I moved here from Chicago where I originally started my amp repair venture.
I wanted to make a suggestion regarding something that I’ve found useful with the NFB loop.
NFB is my favorite thing to disconnect or modify as well!
I’ve found that when NFB is completely disconnected, the low end in some amps can become overbearing and farty.
So if you use a DPDT switch, you can ALSO reduce low end with the other pole of the switch.
I do this by: reducing Rk on the power tubes, or on a previous gain stage.
It should have more positive affect if it’s done earlier in the circuit before all the compression or overdrive is created.
Keep up the great work!! I’ve seen so many so-called techs that have no clue what they’re doing and they don’t even understand how the circuit works… they just use the shotgun approach and start replacing parts. It’s so refreshing to watch your videos and hear you use the correct terminology IE grid leak, grid stopper, cathode bypass cap etc 👌
BTW my business is called Fretgood Amps LLC and I’m located just outside Pensacola, FL in Gulf Breeze FL.
Thanks so much for the very kind and helpful comments, Neo. I agree that the complete elimination of NFB seems to affect different circuits in different ways, and can definitely be overpowering in some cases. I've been experimenting with solutions, including the insertion of a lower value resistor rather than complete disconnection......and will definitely include your suggestion in my quest for a good solution. Thanks.
No excuses for Deluxe Reverbs not being fixed any more. Hats off to Jack and Cathy. Regards, too, to Columbo doing some amazing footwork, again.
I'm not sure what all this refers to, WK.
Gidday uncle Doug! Well done mate! Finally, someone on yt has given a full & proper explanation of the correct, SAFE method of connecting up the incoming mains power through to the power transformer! I'm so glad it was you! 😊👏👏👏! You fault finding procedure was clear & precise, & I especially liked your 'trick' of hooking up your test speaker to the reverb driver transformer output to test that stage. What a great idea!
It's a shame a new tank was required though, but I guess reverb tank output transformers are just too tiny & fragile to try to work on aren't they? The very few I've seen appear to be, with ridiculously fine wires, & glued-in little magnets in them that may need careful alignment & calibration. They're not expensive so a replacement was the wisest choice, despite you having found the broken wire on the input side.
I was just wondering if the customer may have requested an EARTHED mains auxillary output socket as well as the removal of the death capacitor, he wasn't very clear on this.
I really liked your analysis & discussion of the development of the Fender circuit over the models too.
Another stellar video of yours that I could easily watch again!
Thanks so much, Neville. The only unobtrusive way to provide a grounded auxiliary output is to use an intermediate 3 to 2 prong adapter with a ground wire to connect to the chassis. So few people use the auxiliary outlet that it is rarely an issue
There's something satisfying about the sweep of an analogue needle. Cool video UD, nice troubleshooting, 👍
Amen, brother. Thanks !!
Outstanding! Every video you make reveals another part of Leo Fender's genius for the Fender sound. Thank you Uncle Doug!
You're welcome, Johnnie :)
I have been waiting many moons for this one. I started with you back when you built a Champ out of spare parts just lying around your shop... about 7 years ago? Wow. Internet-time sure flies. You are part of the reason I felt more confident in investing in a Tweed 5E3 a few years ago... I felt safer about it because I understood more. When I saw you do your first blackface circuit really in depth... I was captivated because right after music school maybe 2-3 years after high school, I sold all my 80s Fender gear and adding that up, spent all my savings and some money I needed for gas for my first professional amp. I've had it for decades and my clients still ask for it. The Tube Chart says "ND" or 14-4 .... April 1964. And it is a Fender Deluxe Reverb amp from the first run. I play every kind of music with it... if I plug it into a 4x12 using a simple dirt box into the normal channel I can cover for an AC/DC cover gig... and if I use the Vib. Channel with a lot of treble I can play Buck Owens late into the night for the dancers. I got the advice early on to "just get a black face Fender" .. but when I heard the Deluxe Reverb, my young inexperienced ears knew it was special immediately. It loves every guitar I try.
..in January of 2020 a good engineer said, "Lets print that reverb... I don't have anything in my rig that can do that..." that' was a 56 year old tank at that time. I've had it for more than half it's existence (and I might be buried with it. ) I have the original JBL that I can swap back in if I get country gigs, but right now I have something very nice and alnico in there. As hinted to, over the years I have more amps now, but the DR64 is still my main tone tool.
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This video and your careful trouble shooting makes me feel much more involved and closer to my lifelong pal.. but I am so clear how much you have already taught me because I already know what to expect to see between the schematic and your shots of the pencil on the actual circuit. I know the nicknames for those brown caps.. I recognize the various resistors and caps without realizing it. I get happy when I know you cleaned the tube sockets and sprayed out the pots. I ask for that regularly...I have had and do have some great techs in Los Angeles to keep in it in perfect shape. As I suggested, it's watching your videos that makes me much more comfortable talking details with these repair professionals. I see the common problems you show us and I always ask how those areas are when I bring it in. I sold off my Mexican silver reproduction foot switch and and shelled out some higher dollars for a stock vintage black foot switch. Perfect. I will be watching this video more than once. I will also watch anything you do on the brown era.. and most especially stay tuned for the part 2 here and any other discussions you have about Tweed Deluxes .. esp. the 5E3. Thank you for demystifying something that is a part of every day of my life.
- Jensen Bell
PS a Fender Bassman from the Narrow Panel era has an "F"... mine is a 5F6-A
Thanks for all the interesting and informative comments, Jensen. It's great to hear that the videos have been so helpful.
@@UncleDoug Very much so, and thanks Uncle Doug!
Great teaching moments indeed. I just checked my MIM footswitch and sure as $hit, it came from the factory with the sticker turned upside-down lol. I came here looking for the fix for the VIB ticking issue and hit like and subscribe. Great video in all respects!!
Love to fall asleep to end demos. But even more these lessons learned and lectures.
Glad you like them, Yup.
Excellent video! You are a master at both troubleshooting fundamentals and unexpected humorous commentary - a rare gem!
Thanks twice, Mike :)
Chapeau Uncle Doug and Jack - what a great video ! That's the way of perfect trouble-shooting you are teaching all viewers. But needs so much of experience. Thank you very much, God bless you !
Thanks, Klaus. Glad you enjoyed it :)
Thanks Uncle Doug.
I am about building a Deluxe Reverb Kit from TAD.
Wish I lived nextdoor to you........
Would make things easier.
Your vids are so well made and informative.
Cheers!
You're quite welcome, UW. I'll let you know if one of my neighbors decides to move :)
Hi Uncle Doug. Congratulations on reaching 💯K subscribers. A real testament to your hard work, expertise and high quality content. When I studied electronics, valves /tubes were off the curriculum. Your videos have really helped me increase my knowledge in this area. Thank you !
Thanks for your nice comments, Phil. I'm glad the videos have been helpful.
Yet another fantastic video Doug. I have been wanting to watch it for days and days but I didn’t have time until now (some 5 days after it was posted). As you know we lost our beloved Bichon Frisée Max back in October last year and we have been desperately waiting for our breeder to have a litter. Eventually a litter was born and we had to travel to the other end of the country to collect our new baby. We got home on Sunday evening and life has been a blur ever since. Our home is a happy place again and we are enjoying our puppy so much. She is wild, active and so playful - i.e. everything a puppy should be at her age. Hope that you and the boys are keeping well.
Thanks so much, Robin. Jack was our replacement for a beloved, adopted feral kitty who passed away due to kidney problems after many years of wonderful companionship. His vibrant personality really helped us get over the loss, as I hope your new puppy helps you.
@@UncleDoug We have had many rescue cats over the years and they have been fantastic. One of them was just left behind when a neighbour moved house. She was only about 7 months old and pregnant. We gave her a home and we also kept one of the kittens, whilst making sure the other 3 went to really good homes. You would think that she knew that we had saved her and was always a house cat and never wanted to go out once she adopted us. Still miss them so much!!. Puppy settling in great and is already responding to her name. Take care and thank you for responding to my comments. Your channel really does make a difference to people.
Uncle Dough; Thanks for a new, and as usual, very uplifting video experience🙏🏻
Also thank you your beautiful instructional, but kind Comments 🙏🏻😉
Thx Uncle Dough🙏🏻😉
You are very welcome, OZ.
Thanks Uncle Doug. Great informative video as usual. When I was a lot younger we used Simpson 260's in the test lab and were advised not to leave them on 'resistance' when not in use.
Be well and best to the cats too.
You're welcome, Andy. I think that's in case the probes are left in contact with one another, the battery will be drained.
Really enjoyed this one. great watching the methodical testing and fault finding, with the fault on the connection to the pot had guessed it was a wiring fault on the phono,
Glad you liked it, Mr. G :)
Surprising that there were that many broken wires--reminds me of my old Kustom 250B. Sequential trouble trouble shoot works every time.
Those Quebec treats are great. I love 'em !!
Yes it does, Mr. CC. Now, they are all my cats will eat......spoiled beasts !!!
Your method of rectifying the tremolo and reverb problems is an excellent example of how to track down a fault. Start at the beginning then work your way through. I also see no point in the jack for an external speaker, especially if you unplug the internal speaker because the jack contact shorts the O/T secondary. So you would have to use the internal jack anyway. Mr. Fender could have saved a few cents there. I noticed that the TJ2565 stamp on the transformer matches that on the chassis, so maybe they did just use what they had in stock. Thanks for the hour and a half extravaganza. Regards, Jeff.
Thanks for the insightful comments, Jeff.
Greetings Uncle Doug!
Thanks for another great video.
I have very good experience with repairing faulty spring reverb transducers. Many times one end of the transducer's tiny wire got broken. All you got to do is to carefully remove the tape that cover the wire and carefully take out one winding from the broken end. Then carefully wind the wire across the transducer pin connector and solder it.
Put back the protective tape the your reverb tank is good to go!
Also it seems like the audio demonstrations recorded too hot (from the mic / gain on the computer input, not the amp).
When recording to a computer the max peak level of our input should be not over minus 10db on our DAW meters.
The reason for that is that our DAW using scale of dbfs (digital full scale) while analog VU meters using a different scale of dbu.
So when your analog VU meter shows 0db the meter on your DAW should display minus 16 dbfs.
Since in analog audio we love when the needle jumps over the 0VU on our analog gear we can set our max peak level to minus 10 dbfs.
Recording digital audio with this method will bring you better results with no digital clipping.
Here's a table with a comparison between VU meter to a dbfs meter.
www.gearslutz.com/board/attachments/mastering-forum/166956d1270675927-dbu-dbfs-analogue-digital-scale.jpg
I too have resorted to heroic repairs like this, Asaf, but when working on customer's amps, it's generally best to provide new parts.
Thanks for the helpful recording tips and link, Asaf.
Steve here from Covid free Victoria Australia(were shaking hands again LOL) welcome back Doug always great when there's a new video from the maestro from the lone star state, got to get rid if those Illinois Capacitors I spend my life getting them out of Fenders. I have a 1970 ish Traynor YB1 on the bench currently, doing much the same work 3 cord cable it has US power so running off a convertor 240 -120 but always good to see the Master at work to show us the way and looking forward to the next one
Stay Safe Doug and as always greetings and best wishes from down under
Thanks so much for your kind words, Steve. Best of luck with your projects and health :)
Thanks for the Education Uncle Doug ! You are a gifted teacher man ! God Bless and I'll be watching many more of your knowledge filled videos. You Truly do great presentations, and we are all appreciative for how you share your passion for Analog Audio with us who are still enthralled with the subjects you present. Thanks eternal.
You're quite welcome, RD. Thanks for the nice comments.
Uncle Doug to the rescue. Your attention to detail is astounding. We need to find you an apprentice so others can learn your craft.
Thanks, JP. I consider the viewers to all be potential apprentices :)
The 1965 Fender Blackface Deluxe Reverb has always been my dream amp great to see one in such great (original) condition and detail:)
Agreed, Colin......one of Leo's greatest.
This is my first time watching... it's like Bob Weir fixing an amp!
Thanks for the flattering analogy, Evan :)
Yes! I’ve worked on one of these, easily my favorite repair I’ve done to date, a good cleaning, new f+t and sprague caps, new old stock tubes and a new trem bug was all it needed. What beautiful amps! The voltage is pretty high for 6v6’s but the bias pot makes biasing a breeze! Thanks for the video, Doug.
You're welcome, Tommy.
Another great Fender amp in Uncle Doug's bench! Thank you for one more great video. Despite there being plenty of technical series in the channel and schematic walk throughs, I don't think it ever gets old and I really enjoy these additions in the end of your repair videos. All the the best to you, Rusty, Jack and to all your friendly sniffing companions.
Thanks so much, Andre. We really appreciate your kind words.
Great Video Uncle Doug. Beautifully put together in easy to digest detail. The segment on the evolution of the Fender Tweed Deluxe designs was through and fascinating. Thank you!
You're quite welcome, Reggie. Thanks !!
What could be better then ending a great troubleshooting video with testing the audio with great rifs!
We try to please, Fred :)
this amp sounds very nice ,enjoyed the video especially the troubleshooting on tremola and reverb very good info here ,thanks Uncle Doug for another awesome video!!!
You're welcome, Joe. Glad you liked it .
Great presentation - I learned a lot about reverb units and more importantly, the detailed operation of each stage of the circuit!
Thanks, Bernhard. That was our goal :)
I like your method of wiring the switch so that it's all OFF when it's supposed to be.
Thanks for the support, TT. I catch some flak over my method.....but to me, it's obviously the safest and best.
This Deluxe Reverb has the somewhat rare "A division of Colombia Records" instead of "Columbia Records" labeling on the back panel. The misspelling of Columbia was the result of the rush to switch over to CBS control. This was corrected around August 1965.
Also, FYI, since the 12ax7 tremolo driver tube doesn't pass any signal, any used/cheap 12ax7 will work there as long as it oscillates. If you have a vintage Telefunken, Mullard or RCA there, it's much better used somewhere else and is WAY overkill!
Thanks for the fantastic video Uncle Doug!
You're welcome, John. Thanks for the helpful info.
Wow, thanks for the tip on checking these Fender foot switches! Sure enough, I checked mine and it's also wired backwards (shielded wire to vibrato button instead of reverb). I'm re-soldering the leads like you suggested. Learning a lot from your videos... :)
You're welcome, August. I'm glad you were able to repair your footswitch.
As always great video. Loving the part two more and more. I’ve loved the car parts two as well but this once are highly educational. No matter what I know I hear something new each time. Thanks Uncle Doug.
Glad you enjoyed it, 9W. We try to make things as varied and entertaining as possible.
Thank you Uncle Doug for another excellent repair video. I'm probably the worst guitarist in any room I walk into but I would love to stumble into one of the amps that I could give a forever home. You can't beat that tone. Cheers!
You're quite welcome, Ray. Thanks :)
I’m home recovering from Coronavirus and making good use of my time by watching your videos to help me get to the next level. Thanks so much, Doug! I missed seeing Rusty in this video, btw.
Best wishes for a speedy recovery, Earl :)
@@UncleDoug I appreciate it. I’m back in the saddle between my HVAC job and amp repairs.
great video i have a 67 twin great sound your knowledge of amp repair and your way of showing us is fantastic thankyou
Thanks so much, Rob :)
great episode. I wish I was his apprentice. so much knowledge
Thanks, N :)
Always a highlight of my day when a new video goes up. Thanks for all the videos over the years!
Glad you like them, Ward. Thanks for watching.
This couldn't be more timely! My only store bought tube amp is a Hot Rod Deluxe and it's been begging me to rip out the green board and hand wire it up. It a little different that this original but this should get me 90% of the way there. *Grabs popcorn & beer*
Good luck with your project, Tim :)
Fantastic video as always. Maybe you could hire Vanna White to hold up the Post It notes during the demos? Thank you, Uncle Doug!
You can thank the Guitologist for this new subscriber 👍
I will, next time he and I converse :)
Always love a new Uncle Doug video. One of my absolute favorite channels.
Wow, thanks, ST.
Nice tremolo and reverb lesson! Thanks!
You're welcome, Michael.
Love this guy.
Knowledge, expertise and humour.
.....and we love you, Rod. Thanks !!
Great video sir. Aside from being extremely talented, Uncle Doug is genuinely a very nice man.
Wow....thanks, Mike :)
Second time watching this, and it's even better the second time! Absolutely well done, clear and informative. Thanks!
Glad it was helpful, Richard.
What great info here. Almost would like to see a series continued on it's own of schematic explanations. Well done as always
Thanks so much, Justin.
God Bless and Protect you and your Family Uncle Doug!!!
We Love watching all your educational videos. Best on youtube.
Thanks so much, F1. Likewise on the blessing.
your videos are always excellent! getting to see a real professional amp tech veteran at work! thanks uncle doug!
You're welcome, Jon :)
Great video Uncle Doug, and good to have you back! I was starting to have withdrawal symptoms ;-) I have to chuckle when I think about all the old Fender amps I have owned since the late 60's. Unfortunately I wasn't smart enough to hold on to any of them. Now they are just fond memories.
Thanks, Bob. I think we all regret some of our earlier decisions ;)
Saving this one for watching later, but wanted to say it's great to see you post a video. Sounds like a lot of weird weather recently in Texas, and was worried that you were caught up in it.
Thanks, Chris. We're in the extreme western portion of the state and thus were spared almost all the cold weather drama.
Another 90 mins of gentle joy.
A nice appraisal, Ray.
Beauty, going to settle back and watch Uncle Doug make a great amp great again. Thanks UD
Our pleasure, Pedro.
Nice! Bring out the old Simpson 260 meter! That just brought me back in time!
Glad you enjoyed it, C :)
I saw this posted this morning and it's been killing me that I can't watch it until tonight. 90 minutes of Uncle Doug goodness! I was hoping that amp repair would get me all of the chicks, lol
It does, Paul.......just be patient :)
So great! I love the schematic analysis. Thanks so much, Uncle Doug!
Thanks, Michael. Glad you enjoyed it.
Another great repair video Doug! I have a few of the double foot switches and you're right, they are all wired with the shielded wiring to the vibrato! Guess I need to get the soldering iron out. 🎸 Nice take on Rock and Roll Hoochie Koo and Midnight Rambler!
Thanks so much, BK. Good luck with the footswitches :)
Hey Uncle Doug, I have been a sub of W2AEW for many years. He is very knowledgeable and does nice work, like you. I'm nothing compared to W2AEW, but, I build little FM transmitters, TX, just for fun and always get resonance, (Tank Circuit). Be good, have fun, C.
Thanks for sharing, Cass. I'm a real fan of W2AEW.....he makes it look easy.
I replaced the reverb tank in my marshall vs100 with a mod. Sounds fantastic in my opinion. This video makes me want to go set it up and get my surf rock on
I really prefer the MOD tank, CoC, and I'm glad you agree.
Thank you uncle Doug,very helpful God bless.
You're welcome, Julio :)
Hi Doug! Thanks for another great video. Rather than the NFB Mod I prefer switching out/in one of the Cathode Bypass caps. Big difference.
Cheers.
Thanks for sharing, RCP.
Another great day in class...Uncle Doug's...School that's highly enjoyable and educational.👍👍👍🎙🎸🌟🌟🌟🌟🌟
Thanks, Doc. There's a test on Monday ;)