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Ray Gianelli
США
Добавлен 2 дек 2013
I was one of those kids that took everything apart to see how it works. 60 years later I still do. Only difference now is I put them back together!
Join me as I repair vintage audio equipment, test equipment and other electrical/electronic items. I'll share my process, my troubleshooting philosophy, how to read schematic diagrams and test electronic components.
My focus in creating this channel is to share the things I've learned about electronics. This is the only way that technicians can reproduce. Please subscribe so we can make this journey together!
Join me as I repair vintage audio equipment, test equipment and other electrical/electronic items. I'll share my process, my troubleshooting philosophy, how to read schematic diagrams and test electronic components.
My focus in creating this channel is to share the things I've learned about electronics. This is the only way that technicians can reproduce. Please subscribe so we can make this journey together!
Cambridge Audio Azur 650C CD Player Unit Dead
This video outlines the steps taken to determine the cause of failure, which was the power supply being loaded down by a shorted component.
#amplifierrepair #electronic #audio #electronicrepair #vintageaudio #electronic
#amplifierrepair #electronic #audio #electronicrepair #vintageaudio #electronic
Просмотров: 727
Видео
Soundcraftsmen MA5002 Repair
Просмотров 68321 час назад
This video outlines the process used to find the issues preventing the amplifier from powering up. #electronic #electronicrepair #vintageaudio
Soundcraftsmen CX4100 Preamp EQ Repair
Просмотров 49714 дней назад
This video documents the repair of a Soundcraftsmen preamp which loses signal when the EQ is engaged. no service literature was available the time of repair. #electronic #electronicrepair #vintageaudio #audio
Pioneer SX-950 Repair
Просмотров 1,1 тыс.14 дней назад
Back after a long absence! This video shows the steps taken to fix a Pioneer receiver stuck in protection mode.
Update July 1st, 2024
Просмотров 1,2 тыс.2 месяца назад
Just a quick update to let folks know where I've been.
Marantz 2230 Tuner Repair and Restring
Просмотров 1,7 тыс.5 месяцев назад
This video shows the steps taken to diagnose poor tuner sensitivity, and how to (and how not to) restring a tuner. Brian Beezley's web site: www.ham-radio.com/k6sti/match.htm #electronic #electronicrepair #vintageaudio #audio
Pioneer SX680 Repair
Просмотров 1,4 тыс.6 месяцев назад
This receiver had barely audible, highly distorted sound in both channels. This video outlines the steps taken to diagnose the problem and repair it. #electronic #electronicrepair #vintageaudio #vintagestereo #audio
JVC JR S200 Random Blast of Noise
Просмотров 9636 месяцев назад
This receiver would play music, but occasionally would emit random blasts of noise, sometimes extreme enough to throw it into protect mode. This video outlines the steps taken to clear that issue, as well as other noise issues. #electronic #electronicrepair #vintageaudio
McIntosh C31V Volume Control Issue
Просмотров 1,1 тыс.6 месяцев назад
This video outlines the troubleshooting steps taken to repair an unresponsive volume control. Unlike vintage analog volume controls, this one is electronic. #electronic #electronicrepair #vintagestereo #vintageaudio
Distortion Analysis: I've been doing it all wrong
Просмотров 1,5 тыс.7 месяцев назад
I recently learned that my distortion analyzer had been connected in a manner that leads to higher than normal readings. This video demonstrates this, and the steps taken to correct it.
Neumann V402 Mic Pre
Просмотров 4827 месяцев назад
While this video shows the repair of an expensive esoteric piece of studio equipment, the troubleshooting steps are common to any piece of electronic gear exhibiting similar symptoms. #electronic #electronics #electronicrepair
Just a quick update
Просмотров 1,2 тыс.8 месяцев назад
Just wanted to sign in and tell everyone what's been up.
Luxman LV 105U Phase 2 Driver Board
Просмотров 90110 месяцев назад
Time to tackle the driver board in this episode. As bad as I thought it was, it was even worse! #amplifierrepair #electronic #audio #electronicrepair #vintageaudio #electronic
Luxman LV 105U Phase 1: Power Supplies
Просмотров 89310 месяцев назад
Power supplies are the heart of any electronic system. In this video I go through the various power supplies in the amplifier, replace missing parts and verify operation. It's gonna be a while before this thing puts out any music! #amplifierrepair #electronic #audio #electronicrepair #vintageaudio #electronic
Onkyo TX SV727 Repair of Remote and Broken Pot
Просмотров 97810 месяцев назад
Onkyo TX SV727 Repair of Remote and Broken Pot
Yamaha MX1000 Repair #amplifierrepair #vintageaudio #vintagestereo #audio
Просмотров 3,8 тыс.11 месяцев назад
Yamaha MX1000 Repair #amplifierrepair #vintageaudio #vintagestereo #audio
Yamaha MX1000 #Shorts #vintagestereorepair #yamahaamplifierrepair
Просмотров 562Год назад
Yamaha MX1000 #Shorts #vintagestereorepair #yamahaamplifierrepair
Sansui AU 719 Stereo Integrated Amplifier Initial Evaluation and Restoration
Просмотров 8 тыс.Год назад
Sansui AU 719 Stereo Integrated Amplifier Initial Evaluation and Restoration
Sansui AU 719 Bad Power Transformer #electronic #audio
Просмотров 4 тыс.Год назад
Sansui AU 719 Bad Power Transformer #electronic #audio
Adcom GFA 555 Internal Protection Update and Correction
Просмотров 1,5 тыс.Год назад
Adcom GFA 555 Internal Protection Update and Correction
Installing an Internal Protection Relay in an Adcom GFA 555 IMPORTANT: READ DESCRIPTION!
Просмотров 3,2 тыс.Год назад
Installing an Internal Protection Relay in an Adcom GFA 555 IMPORTANT: READ DESCRIPTION!
Sony TA N77ES Power Amp: Making it Work with Missing Speaker Selector Switch
Просмотров 2,4 тыс.Год назад
Sony TA N77ES Power Amp: Making it Work with Missing Speaker Selector Switch
I picked up the VP-7725B today but am having a hard time finding a user or service manual. Any change you have either of those Ray?
Wil, send me an email and I will attach what I have. If you click ...more next to my channel description you'll see my email.
Thanks Ray, I missed your videos. I also don't like to repair a mechanical parts as you my friend.
Ури! Приятно слышать от вас. Я потратил время, чтобы разобраться с кучей вещей. И тем не менее, у меня все еще есть куча вещей. Это хуже, чем я думал!
Amazes me when I see these things being taken seriously overseas. In the UK they are nothing more than cheapo House-brand units sold by Richer Sounds, a discount hifi/AV retailer. They generally sound pretty good but under the skin they're the same cheap Chinese junk sold by all the sheds.
Maybe that's part of the appeal, that they're not that common here. Years ago there was a beer that wasn't nationally distributed. Anytime someone went to a part of the country where it was available, they brought some back and everyone clamored for it. Now that it's available nationwide we all realized it was swill. 😆
Hello Ray, nice and useful video once again!. I hope there is a way to figure out what is wrong with the display. Most of them have an epoxy blob covering a chip that decodes the signals and applies all the signals to drive the LCD. If that chip fails, there is not much you can do. The back light is usually driven separately, and it does not involve the said chip so the fact that there is back-light does not necessarily mean that the driver chip is receiving power. Most likely you already knew and tried this, but if not, it would be my two cents.
Appreciate the input, Joe! I suspect it is the processor. I had voltage to it, and pulses as well. No idea what pins do what, as there's no part number on the blob. I was disappointed in the outcome, but that's just the way it is with some items. McIntosh has service literature and parts going back decades. Other manufacturers,well, not so much.
Another great video Ray! It's really difficult finding schematics these days! Back to basics! Great job!!!🙂
Thank you! Sometimes you just have to apply logic and basic troubleshooting techniques. A little luck never hurts either. 😁
@@raygianelli3612 I know what you mean! I'm retired as tech but, I will say it was easier back in the day before surface mount came into play. I have my own workshop at home but, I do it for fun. I guess it's in the blood! I do enjoy your videos since you work on the good old systems! Keep them coming Ray!!! Be well! 🙂
@@alfonsoincorvaia2595 Thanks Alfonso! Some guys build birdhouses, some of us repair old stereos. Fortunately, the birds around here manage to find their own housing. 😁
@@raygianelli3612 They sure do, I live here too. Birds, bats and everything in between..lol Be well and see you on the next video!!!🙂
Nice to see another video from you. Would have loved to see the smd installation. I sold many of those. I think that player has a dimmer, on off function. It’s been a while since I had one.
Yeah, I've been looking at trinocular microscopes with cameras to capture the actual work.
Nice one Ray !
Thanks Andy! Bummed I couldn't get the display working, but I'm starting to think this unit was subjected to a power surge, possibly lightning induced. The owner is a snowbird, and this unit was in his Florida home. When he came down he found it wasn't working.
@@raygianelli3612 Oh ! whats a 'snowbird' Ray ?
@@andymouse Nickname given to those who winter in Florida and spend the rest of the time in their home state.
@@raygianelli3612 Cheers from across the pond Ray ! where we winter in the UK and spend the rest of our time in the UK
Good job, it's always difficult working blind on digital circuits like this.
Thanks Trevor! Although TBH I'm working blind regardless. Gotta get these damned cataracts dealt with.
I've had a 740C for over a decade. I've never had to repair any device more than this unit. Those main filter caps are 'proprietary' (I.e. as cheaply made as possible). A transistor and some caps in the servo always go. And the worst being the connectors and traces in the front panel get intermittent open circuits. They are great sounding players when working but they tend to come back like boomerangs with another issue. Scrap it!
In C640v2 they have sandwiched two no name 85°C caps between bare, non- heatsinked 78/7915 regs running in excess of 50°C with foreseeable consequences. Planned obsolescence. All tactile switches had to be replaced as well, along with the drawer belt.
Wow, I had no experience with Cambridge Audio products. I thought they had a good reputation. Between your post and the one before it I'm not so sure now, at least in the CD player realm.
Just like anything else British, they try weird stuff, because they can.😂
@@RectifiedMetals Kinky Boots! 😝
I have experienced LCD that had the various layers de-laiminate when heated(OLD radio shack portable computer 1980's stuff. When left on automobile dashboard in the hot Florida sunshine). It went totally black.
There's not much that can survive a hot Florida dashboard... and in my case, that included the dashboard itself in my old Chevy pickup. 😁
12:19 harmony 650? dunno why they had to stop making them. it's going to suck when they take down the server and they can't be programmed anymore but until then, i love mine.
Right? I bought that one on Amazon for about $25. When I looked for another they had stopped making them and they were asking 10 times that amount! My previous smartphone, an LG V20, had an awesome IR remote app that came with it.
Good fix ... bad display ... semi-bummer.
Moist environments are not good for electronics, it looks like this amp was stored or used in a garage from the looks of that corrosion and the power transformer was rusty looking.
I'm in South Florida, and rain and humidity are just brutal for 3/4 of the year. Even so, this one was worse than most I've seen.
Great information about the "quick test" on the output transistors. That will come in handy I'm sure. Thanks Ray!
Wil, there's a limited number of instances where this will work. The amp has to be full complementary and have no protection relay. for amps with a relay, you can just clip onto an emitter resistor in lieu of the speaker jack.
@@raygianelli3612 understood. Thank you!
Thanks Ray, interesting amp.
The power supply is really different. I worked on a similar one, and the power supply was a bear to troubleshoot due to its design... or just my lack of understanding it. 😆
Nicely done, as always.
Thanks Douglas. A little time off the bench was nice.
@@raygianelli3612 Nothing I enjoyed better than a day of "on the road" calls, just to get out of the office for a while. 😎
Hi Ray great job as always👍 never seen meters corroded like this 🤔 must have been in a very humid environment 🤔 or they were cooling it with water 😂. Nice day 🙂Tom
Hi Tom! Humidity is just brutal here. I run before sunrise to avoid the heat, but the humidity can reach up to 100%. I didn't know you can have 100% humidity without rain, but apparently you can.
Humidity + Nicotine are the usual culprits in this case. I also woldn't be surprised to find out that, at some point, the face of that amplifier was drenched in water.
Old vintage stuff like that is hard to find .... I was raised on tube type stuff then solid state . Me , myself I don't really need the meters to achieve a balanced sound .... Great job on that diagnosis ..
A friend told me that some guys are just in love with meters. Half the time I'm listening to music my eyes are closed, so it's not a big deal to me either. 😁
@@raygianelli3612 LOL ... guilty as charged. Love the dance and rhythm of the bouncing needles ...
@@raygianelli3612 I remember back in the day Soundcraftsman ads all over the back section of Stereo Review magazine.
You Really do need a haircut guy. ...and we will recap what we feel like recapping. So bloodlet that
Thanks for sharing ,but if you’re getting distortion on the peaks would that mean you’re driving the finals to hard or is there a fault in the amp it self ??
If it is equally distributed between the positive and negative halves of the sine wave AND is in excess of the amp's rated output, then you are driving it too hard. If, however, it is pronounced on only half of the sine wave or exhibits at below rated output, then it would indicate a problem.
Hi Ray, good to see you again! BTW I own the same scope, it's a great one! Great video! Take care!
Ray, check the pnp input differentials , the blue caps on the amp driver board, and the pnp devices in the phono preamp and line stage. I do not remember the pnp device numbers . Also cracked solder joints in the PS on the dropping resistors.
Ray, what is a model number of your spectrum analyzer? It's hard to see. Thanks.
It's an Owon XSA1015-TG. Arrow was blowing them out for $600. I think i got the last one.
@@raygianelli3612 , thank you! $600 was a great price for this analyzer.
thanks ray. keep em coming!
A beautiful example of intelligent diagnostics 👍, reductions are sometimes a problem. Nice day 🙂 Tom
Good looking equalizer. Nice painless repair. 👌
Awesome, everybody deserves one of these every now and then in our game ! and today it was yours, cheers Ray.
Nice! Sometimes it's nice to have a "quick win". Thanks for the video Ray.
I may have used up my quota; next one will probably be a nightmare!
Great repair and good to save it from jaws of the recycle center. I wish I had the $ to send you my dying NAD 9060 6 channel amp to completely update. I'm now getting hum and distortion in several channels. To save it I will have to recap and replace any other failing/failed parts. This is likely going to be a major task. Luckily, I have many great electronic techs like yourself to give me inspiration and guidance. All the best to you and yours, Kevin
Kevin, while blanket recapping is usually not advised, the exception would be NAD gear. Certain generations used cheap electrolytic capacitors. I have an NAD 1300 preamp, and all the capacitors in it were measurably defective, with the exception of 4 Rubicon caps around the phono stage. If you have a way to check a few this well might be the problem.
@@raygianelli3612 Thanks Ray! Do you have a suggestion for an ESR tester? And, a transistor tester. I also have a pair of NAD 214 amps and dozens of arc welding power supply boards to repair. Yeah, I'm buried in work and have little skill in the repairs. But, I hope to get a handle on all of it someday.
It's always nice to have a relatively easy fix and great to have the skill and knowledge to verify. Good job and thanks for sharing.
It was an easy one. I just wanted to post a video on one approach to dealing with a malfunction when you don't have service literature.
Gotta love the easy ones!
Shhh... gotta make it seem hard so you can bill accordingly! 😁
@@raygianelli3612 LOL ... I hear ya!
Good repair. What about the other resistors in that area? I guess it's just wait and see. Always look for to your videos Yours and Shango .
Thanks Larry. As I mentioned below in a reply, I'm going to look at the 120Ω resistor on the positive rail.
Nice quick repair ! You can also replace the 120 ohm on the plus VCC rail with a one watt resitor !
Yeah, probably should. I wonder if there's something, perhaps a leaky capacitor, that caused excessive current draw through the resistor.
Thanks Ray! Well done, as always! The process is the most interesting thing of all. Somebody needs to write a book like "The Inner Game of Electronic Repair"...
How's this for a title? "Zen and the Art of Stereo Repair". 😁
@@raygianelli3612 I might take it as a challenge! Went to college to be a music teacher, but took a different path…
A lot of work with this Marantz tuner, but with a good result. In this situation why not suspect that the local oscillator is detuned? Someone could have manipulated it. Or a problem with the J-FET RF input amplifier?
Good job as usual Ray. You explain your diagnostics and trouble shooting very well. Look forward to more. I also have realized that accumulation occurs much easier than decumulation 😉, but I’m getting it done…moving soon too. Good luck with the strike…CWAStrong!
Thanks for the shout out. Moving is for sure a pain, but it's time. Hopefully the strike doesn't drag out too long. Many of the younger folks can't afford to miss one paycheck, let alone more.
Good to see you back at the bench! Nice diagnostics and, yeah, every Pioneer I've touched has had a real maze of a power supply.
Hindsight being 20/20, I should have just checked all of them after deducing a power supply issue.
@@raygianelli3612 I think you got it right... you followed the evidence to a reasoned conclusion. I've never been a big fan of the "shotgun" approach.
Nice, Mr. G is back! Thanks for taking the time to share your knowledge and technique. 👌💪
Thanks! There was a bar here named Mr. G's. Had a huge stage and a great house sound system. Gigged there several times, what a great place. Sadly no longer open.
I really dislike moving so don’t envy what you are thinking about doing. Good luck.
Ugh, me too. I used to joke about having a "cleansing fire" instead. Now I pray I never have a house fire; I've made that joke so many times on line the insurance company is bound to find it. 😁 I had an elementary school teacher on Long Island named Mrs. Van Dusen. That I still remember her says volumes.
Glad you’re back online. I seriously doubt it will be a long strike nobody can afford a strike any more. I survived three strikes. Metro Atlanta is a good area. Climate is reasonable year round. Housing is no where as high as the area you live in.
Another awesome one, Ray :- ) I'm sure this will be helpful in the future when i have one of mine act up or am checking out something for someone.. the little bits of info are super valuable to us fairly new to troubleshooting. I'm happy things are well with you and you are back. Rock on dude ! I have some light hum in my Nikko NR-1415 that needs to be addressed at some point (probably over the cold season when i'm indoors more!) and all these little bits of info help!
Great info, Ray! You have a fantastic teaching style.
Ray, so glad you're back.
I have a 2246 doing the same thing. Clicks and the fan jumps when trying to power up. Where do i find the schematics so i can try to troubleshoot mine?
Glad to see you back! For future reference, the 150 Ohm resistor in series with that 1318 is also a common failure, and the blue (sometimes white) Sanyo coupling caps are notorious. In the SX-828 they cause big problems in the tone circuit but I think on the 850 they used Elna for that.
Nice to see you back Ray ! 😀
I think we work for the same company! :)
Thanks Ray, good to see you back
He’s back!! Really missed your videos. Thank you for taking the time to put this together Ray.
I hope your strike is a short one. I was on strike against Illinois Bell for a week and a half in 1983, but I was young and still living at home, so it was just an extended vacation. I can't see managers taking techs spots nowadays, especially in a CO environment or working on customer network equipment, as, very few, if any, know the requirements to even access the info needed to troubleshoot, resolve or install new new circuits or equipment. It's different to see how Pioneer powered some of the input amplification with a separate power supply, as most every amp powers that part with the same rail as the rest of the amp section, so I could see how that would throw troubleshooting the DC offset for a loop.