TEAC 808 Reel To Reel with multiple faults to solve
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- Опубликовано: 5 сен 2024
- This one is from 1962. Full of tubes, 3 motors and it has multiple faults.
For starters it doesn't play, doesn't record and there is distorted sound on left channel audio pass through. The take up hub has no torque on playback, will not start without a helping hand. It has studio spindles that require reels with an index pin hole. Not all tape reels will fit this beast. I have my work cut out on this one. Did I mention that it is loaded with PCB filled capacitors? Well it has that too. This was pretty much a full day to get this unit where I got it.
Sit back, grab a coffee and watch this beast come back from the dead.
I love the way you work thru the problems. Excellent technical knowledge combined with an easy going approach! Love your stories mixed in with the anecdotes! Cats can be bastards!
A lot of people dont recognize the importance of cleaning and demagnitizing the heads and tape path..that increases the signal..You are one of the best repairs of r/r decks on youtube,,taught Me a lot,,
Only the playback heads require demagnetizing. The record head is demagnetized by the AC bias signal when record is selected as is the erase head.
A labour of love getting this one into working order.
I always prefered Reel to Reel machines, at least you don't need a microscope to repair them.
Just plenty of time and experience.
This was all day, and this is the second edit. Some quack (someone with DR. as their title) used a music bakery track for a hypnosis bed and filed a bullshit copyright claim, and I don't feel like waiting 30 days for the claimant (CD Baby) to release, so I snipped and re-uploaded. There is relevant commentary that was also cut but I am getting tired of this shit.
Doing RUclips video's is getting to be more hassle than it is worth.
It is far to easy for anyone to file a copywright claim with very little evidence
and RUclips always seem to take their side.
If this continues, sooner or later some channels will just close, you can't waste many hours
just to have an idiot claiming the content is theirs.@@12voltvids
Hi Dave I have an old teac x-300. If memory serves me mine had a big wire wound ceramic with a movable tap for adjusting tension on the take-up reel. In fast forward it would get full line voltage.
I believe your diagnosis on the weak run cap for the pickup reel is correct
Now I saw the added resistor in the motor circuit. Wonder why they did this?
@@greengrayradio1394someone wanted to lower the take up torque for some reason.
Seems quite irrational..
@@12voltvids
The legendary 12AX7 valve, my Korg EMX-1 synthesizer has 2 of these as preamps
The ax7 is the high gain version. The at7 and au7 are more linear. Most HiFi gear will use the latter and mic preamp guitar amps the ax7 because with that gain it can be easily driven to distortion.
Thanks Dave for another well done video! And the unit does sound a 100% better!
Bass is a little low compared to the source but it still sounds pretty good but again this is a 62 year old tape recorder and there is a fair bit of wear on the heads and that most certainly affects frequency response.
The resistor; When working with thin (18 micron) or acetate (breakable!) tapes it really helps to have less tension. Although I personally would then use a deck with a very simple tape path and one weak motor, like the Sony TC-377 or so.
Except that it's so low that you have to start it by hand every time and some times it just stops as there isn't enough torques.
@@12voltvids that’s a pretty beefy resistor they used 😁. Still, probably the reason they did it. Or because the pinch roller is old and slippery tape formulations keep getting pulled out from between the capstan and pinch roller. Whatever the reason was, this is not the solution.
Great! Reel to reel videos are my favorite.
At 8:02 I expected "because it doesn't know the words". I seem to remember you making that joke in one of your videos 3-4 years ago. Edit: At 8:35 you did it! I commented too early. When I first got into HiFi, the reel-to-reel era seems to had long passed and I never saw any reel-to-reel machines for sale and don't think there was anywhere around me to buy tapes for them. The compact cassette had already become king by 1982 for home recording. I would love to have had the quality of recording that reel-to-reel gave back in those days, though.
Dave, You can get an older 'portable' version of Thunderbird that supports 32bit. 102.15 seems to be the latest one with 32 bit support.
That's an interesting mechanism, using direct drive motors for each spindle. I think if someone wanted to make a modern reel to reel machine, a couple DC motors for the spindles and one for the capstan, a micro controller to take inputs for the play/FF/rewind switch, building a quality reel to reel machine where the only moving parts were the motors themselves shouldn't be too hard. Hmm. I might have to give that a try some time
Many reel to reel used direct drive reel motors. Ac motors are the simplest design.
Thanks, great video
I noticed that after fixing someone's resistor bodge the wow and flutter is almost not noticeable
Ya think. Yes it was a bloody mess when I started. I've been sitting on this for months. Had to work up the courage to tackle it.
I love your reel to reel recorder videos! That’s an old timer, eh? Almost dates back to the Berlant / Concertone era I’d imagine.
Sure is!
Ha haaa I love the Coffee debacle , just love it HA good on ya pal..& My Favorite R 2 R ..Videos .as one of them Owns me an Akia Gx 210D. 🇬🇧. .
Thanks 👍
That's a really old Teac, with a really strange function selection! The coupling system for the reels is quite unique, I have serviced a lot of tape recorders. never seen this "patent" before
Used on a 45' angle likely in a radio station console. Quick change reel hubs.
Cats actually intentionally imitate baby noises to get our attention. These little fur balls are smarter than we give them credit for. Some young cats are smarter than some kids.
Well you missed the tape counter belt. Otherwise not to bad. I always wanted one of those machines.
I don't have one anyway and have no source.
This is why I am happy I switched to an iPhone. Apps update in the background without you noticing and they also don't expire. No "If you don't keep your apps up to date, you will lose the right to make legal claims" bullcrap.
😂 I'm always distracted by cats
at 1:25:57 you removed it.. Sorry for the remark i guess i should have watched the full movie :) Keep it up man. Love your content
Getting down to around 16 degrees F early next week in Texas.
Here it rarely drops below about 40F. about 22F right now and for these parts that is bone chilling. Remember I am in the tropics of Canada.
@@12voltvids Shows how much I know LOL I had no idea Canada had "tropics" area
@@SanAntonioNews78 in Lytton bc they recorded a record temp of 46.6c which is 119f. That was the year the entire town burned to the ground June 29 2021.
Where I am it regularly gets to 30c in the summer and rarely drops below -10 in winter. We rarely get snow here. I haven't had snow tires since the 80s.
Hey Dave. Just curious....what year were you born.
A year after this rig was made. 😮.
@@12voltvids '63?
Well Dave, welcome to the world of being a cat owner. My sister has two cats & one is a rag doll….
Hi Dave pls what is track playing at 1:22:29 onvideo please? Thank you
Long-haired Siamese Are a Separate BreedIf your Siamese cat has long hair, they're called a Balinese cat. This breed came about as a result of a genetic mutation in purebred Siamese cats that caused the cats to have long hair rather than the standard short hair.
I wonder if the cat knows that
@@shaunsiz.itsbetterbytube2858 Cats and dogs remain unaware of us tampering with their genetics. Don't tell them, gonna be really p1ssed when they find out.
Please remove the yellow resistor. That prevents the take-up motor to spin up rightfully and will probably give better tape tension. you'll get rid of the wow too..
What do you think i did? And no, i didn't "stage" that fault. It arrived that way. I'm sure some are ready to say that.
If my memory serves me right doesn't reel to reel have heads to be 90 degrees in alignment?
I believe all audio heads are 90' to tape travel.
@@12voltvids Thought so to lol getting old now love the vid -Cheers!
@@drsysop l looked in the mirror and there was an old man staring at me. Looking aside i run into old friends that i haven't seen in a few years and think to myself my gawd does xxxxx ever look old. I don't look that old do i?
To be fail everyone thinks I am in my 50s. I wish i was still in my 50s.😅😊😂
Crocodile???
Alligator
@@jerryspann8713 🥂
Cheers. Still it is odd…
@@stevenmann9769 Crock, Gator same thing, they will both eat you alive given the chance.
Gator, Croc
Minus 10 is nothing compared to -32 up here in the mountains , good old Cariboo
My son wants to move to deadmonton. I laugh at that. He will be complaining about walking to work today.
@@12voltvids even I have a hard time breathing this cold air like this morning the temperature fell to -36. I like your wording of deadmonton.
@@lawrencecavens5760-12 here today and everyone complaining. 😂 West coasters, I tell ya.
Apple supports iPhones for 6 years. I think it's a reasonable amount of time. I mean it could be better, but show me one Android phone manufacturer that even comes close to 4 years... Apple currently still supports the iPhone X (S and R) models as well as the SE 2nd and 3rd gen. IMHO 10 years should be mandated. But 6 is also pretty good. And I think apps still run to this day if you go back to even an iPhone 7. iPhone 6 users now get trouble. So how old is the iPhone 6? ... It's a bummer, but I think the support is better than on Android.
Hmm needs all pots and mode switches to get a spray of cleaner.
It did and it was