Sony TC-155 reel to reel playback tape deck

There is a cam with solidified grease on a lot of Sony Mechanisms. The deck need to be cleaned of the grease they used that solidifies and then a better grease such as Lubriplate 105 should be applied.
The Idlers need to be reconditioned as well. The Sony units can be labor intensive due to this required work but I do fix them when people want them done. I am in the Chicago area as Skywave Tape Deck Repair

Hope you can find it in ths website
http://www.hifiengine.com/manual_library/sony/tc-630.shtml

Any spares shop can make a match but otherwise this is for the round or square belts only You can fit a round belt in place of the square type it does not matter. I had some reel to reel machines and in desperation I went to a Hydraulic cylinder and pump spares shop and got an "o" ring of the correct length and thickness Remember that the new belt must be SLIGHTLY shorter to give grip on the pulleys. I have several units cassette and open reel that I was forced to fit this type and some some are running now over ten years everyday

I would guess that the motor and bearings need oil badly.

Problem could be in either the record or playback circuits of unit. Try playing back a tape in another machine to see what the volume is like. If also low then the issue is with the record amp circuits.
Fixing will not be cost effective, however.

Then you should buy some.

REEL TO REEL RECORDER SONY TC 330 - on back side of the set voltage selector knobe is lost,so how can i fix it ?

you need to have a tape in place on the reals or it will stop.Hold the tape feeler spring in place and prevent it from moving forward it is located on the left side just remove the SONY stereo tapecoder cover and you see it

The more detailed the description of the problem, the better for diagnosing the root cause. Thanks.

It sounds like you have a couple of problems. I'll address them as you have them numbered above.

1. Decks typically have belts to drive the various 'reel' mechanisms. Therefore, they can slip without breaking anything inside the machine or the tape. Your first symptom leads me in that direction.

2. That it migrated is mysterious, unless Sony is using a common motor to handle both decks' reel duties.

3. This symptom may have something to do with the root cause of both sides jamming...

Do the cassette well doors come off, say, for cleaning? Could they be dislodge? If so, they may have something to do with the jamming problems in # 1 and #2 as the doors play a part in positioning the cassette and holding it in place against the reel motor cogs. How do the doors operate with NO tape inserted?

Does it take excessive force to close the door only WITH a tape? make sure the tape is fully seated before closing the door. The capstans (directly below each reel cog) have to engage through the small holes at the lower edge of the cassette. They should be straight and clean. Any dirt or oxide on them will cause problems as these are what move the tape at the precise speed necessary for good playback or recording.
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My hipshot recommendation, otherwise, is to look around inside the cassette wells very carefully for any foreign matter, debris, dust bunnies.

Do you maintain the deck as recommended?

Hi m522posner

There is a surprising interest in "vintage" hifi products these days. Your tape machines probably needs new belts. Check this site out. You can get spares for your tape machine here. Belt kits are $17. He does repairs also, but the transport to and from may be an issue for you. I suggest emailing Bob, he may be able to refer you to someone in CA > I could do the repairs,but I am in Australia. :)

Vintage Electronics
P.O. Box 941
1241 Conestoga Creek Rd
Florissant, Co 80816

Email: [email protected]

You could have a go at freshening up the belts yourself:)

regards
robotek