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Sony TC-366

Three Head Stereo Tape Deck Recorder (1971)

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Sony TC-366

Specifications

Track system: 4-track, 2-channel, stereo/monaural system

Heads: 1 x playback, 1 x record, 1 x erase

Reel size: up to 7 inch reel

Tape speeds: 1 78  3 34  7 12 ips

Wow and flutter: 0.09% (7 12 ips)

Frequency response: 20Hz to 25kHz (7 12 ips)

Signal to Noise Ratio: 55dB

Total harmonic distortion: 1.2%

Input: 60mV (line), 0.19mV (mic)

Output: 0.775V (line)

Semiconductors: 27 x transistors, 4 x diodes

Dimensions: 16-7/16 x 8-5/16 x 14-13/16 inches

Weight: 22.5lbs

Accessories: empty reel, SLH tape, RK-74 connecting cords, reel caps

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Comments

re: TC-366

With regard to the tape speed issues, take a hard look at cp 302 and cp301. They are "snubbers" and when they short they slow or stop the motor. They are resister-capacitor networks and are generally not available but are very easily replaced with discrete components. I found about them on tapeheads.net while working on my TC651.Solved all of my problems. The 651 has 9 of them! You should replace them any way because they are prone to catastrophic failure and even fire. Now that I am aware, I will summarily replace them in my 366. Bring'em back alive, it did mine! doug

re: TC-366

Hi Doug, Thanks for your quick answer! Looking at the capacitors and the schema, I thought that replacing the C312 double capacitor would be the best idea.

The problem is now solved. I couldn't find the correct double capacitor in France, so I first wanted to replace with two capacitors (0.5 uF and 1.5 uF), but I couldn't even find one of 0.5 uF. So I checked the frequence switch (allowing you to switch between the European 50Hz and the American 60Hz) and saw that for 50Hz the two capacitors are connected in parallel, which means 2.0 uF. So I replaced with a 2.0 uF capacitor and things now work as they should!

-- christer

Sony TC-366 Gradually slowing down

I have borrowed a TC-366 and it worked fine for some time then suddenly it felt like the motor was getting "tired". Slow to get up to speed in play and it quickly got worse and playback at 19cm came out as if it was at 9.5cm (7 1/2 and 3 3/4 for the non-Europeans), and finally it is now coming to a complete halt after a few seconds. FF and REW that initially worked fine were also impacted in a similar way, and first worked slowly for some time, but now the auto-stop sets in. I have lubricated the motor from below, but/and it makes no noice when manually turning the fan axis. In the idle mode the wheel that is referred to as IDLER-A in the service manual page 4 spins fine until I switch to playback which makes it slow down completely. Is this a problem with the motor, or could there be something else that puts too high a load on the motor (but both for PLAY, REW and FF!)?

re: TC-366

just purchased a sony tc 366 however it did not come with a 5 pin cord to hook up a receiver wher can you purchase one been looking no luck

re: TC-366

You might have a European version with a 5 pin DIN cable connection. Ignore that and hook it up with a pair of RCA type cables. (I assume you do not have a DIN type jack on your receiver. If you do, search for a DIN to DIN audio patch cable on ebay)

re: TC-366

Greetings all
I have just "dug out " my trusty machine which I purchased new in 1972. Has been in cool storage for many years.
All seems to operate quite well mechanically and even the SLH Sony tape recorder on over 40 years ago plays exceptionally well with only minor oxide "dropping".
However when powered up , stationary, ie not playing it is outputting a lot of "static" ie little snaps and crackles, like an AM radio in a lightning storm.
such a pity as I was looking forward to enjoying some live choir recordings from 1972/73.
Any help please?
thanks
regards from Oz

re: TC-366

Have you tried applying deoxit or other cleaner solution to the monitor switches? It sounds like I Might've had a similar issue that you did, I got lots of static on playback primarily, possibly on idle, not sure since I wasn't listening/no output.

After cleaning and applying, flick the switch around real good. For me, I had some crackling that seemed to clear up after playing a bit with the switches, and then letting a reel just play. I need to clean it a bit more but def give the monitor switches a clean, and see if anything else internally could be cleaned.

re: TC-366

Resurrecting an old friend.

Been in storage a decade..

Cleaned it up and will fast forward and rewind..BUT

Nothing happens when put in play mode and will not stay in the position.

HOLDING in the position does..have sound of something trying inside..

But will not play or stay..

Any ideas ...truly appreciated!

re: TC-366

Maybe the Automatic Shut-off Mechanism is the problem

re: TC-366

How difficult is it to change the helper belt on this model? What needs to be done?

re: TC-366

http://www.angelfire.com/electronic2/vintagetx/SONY.html . Please this is a only you need for service your R2R tape recorder. Excellent site. Thanks Texan !

re: TC-366

Hi, I serviced the whole machine, playing well, but having a "blowing wind" sound coming out of one channel although the music is coming through, any ideas?

re: TC-366

It is probably a bad / failing transistor. I find them all the time on TEAC and SONY.
If it is in playback only...the problem is Q106 - 107 - 108 if left channel or Q206 - 207 - 208 if right channel. Since these are direct coupled, I would change all three in the bad channel. You can go to NTE website and find generic replacements.
If the noise in apparent in source mode too, then look at Q109 - 110 left channel or Q209 - 210 right channel.
Frank

TC-366 Runs Slow.

I have a TC-366 R2R deck that seems to run fractionally slow.
It had been sitting for some time when I got it a few years ago.
It worked for a while and then I went to use it bit ago and it runs slow.
I have heard mention that there are motor capicitors that may need attention/replacement.
I just downloaded the manual so I will get into this a little further.
This unit may need belts and a proper lube.
Mechanics I can sometimes figure out but electronics are not my thing.
Any help is appreciated.
graham

re: TC-366 Runs Slow.

Hi,
I am an electronics tech with experience in open reel tape decks along with a lot of other things. If it's only running slow the drive motor may be slipping (lagging) the 50 or 60 Htz (depending on country) applied to it. Check the phase shift cap with a capacitance meter, remove connections before measuring (replace as necessary). Make sure motor is well lubricated (bearings) .

TC-366

The idler rubber may also be the culprit. It can be re-rubberized at Terrys' pinch rollers, for 40 big ones. I'm deciding whether to do this on mine. It also needs a new helper belt, and the capacitors are 40 years old.

JR..Thanx for the

JR..Thanx for the hint......
I may take a look the belts and idler pulley this weekend.
thanx again .

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