Question about Teac DUAL CASSETTE A/R 110/220 Single Dual Cassette Deck

1 Answer

Deck turns on but doesn't do anything else. Motor runs.

Actually, it's only a single cassette and I'm not sure of the model; got it for a couple of $ with the assurance it had been tested - perhaps it was, but not with a cassette to see if it turned. I've opened it up and the main drive belt is broken (or just disconnected - it's kind of a sticky rubber that gloms onto itself). It's a flat belt about .25 in. wide. There's a kind of flywheel about 1.5 in. in diameter that seems to drive the other belts (which both look like "O" rings) - does the main belt go from the motor around the flywheel or does it drive something else? When I tried putting it around the flywheel, the motor seemed to stall, as though the flywheel was stuck or the motor just didn't have the power to turn it. Should the motor spin the flywheel even when the play/FF/Rew buttons are not engaged? Also, how loose should the other belts be, the "O" ring looking ones? They seem very sloppy to me, not at all like a car fan belt, and seem very stretchy. Thanks for your help. John

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Re: Deck turns on but doesn't do anything else. Motor...

The main flat belt you describe is probably the capstan belt. The "flywheel" you describe drives the capstan. I don't know the model number of your deck (it would help if you could say what it is), but I'm pretty sure that the flat belt should go around the big flywheel and then around a motor pulley that should be very close to the flywheel. The motor should spin the flywheel even if the play/FF/RW buttons are not engaged. This might sound funny, but the other "O" ring belts might be very important (control motor belts) or not that important at all (tape counter belts)--it depends on the model number of the deck. One more thing: Every healthy capstan belt I've ever seen is NOT sticky and does NOT glom onto itself. That belt sounds like it is very old and needs to be replaced.

Posted on Oct 06, 2007

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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?

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