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Yamaha TC-520 Cassette Deck



Yamaha TC-520 Cassette Deck


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Re: Yamaha TC-520 Cassette Deck

Hi,
Does anyone have a service manual that they can upload for this deck?
Thanks.

Re: Yamaha TC-520 Cassette Deck

Hi,

Sorry I don't have the manual for this model. There is a Service Manual for the TC-720 here. Most of the mechanical information should be the same.

What is the problem that you are having? The most common problem with 2 head tape decks is the record/playback switch. It is usually a 2 or 3 inch long switch that is in some way mechanically connected to the record lever on the transport. The usual symptoms are a motor-boating sound in the audio and the meter needles jumping or no sound at all. Usually all that is needed is to clean the switch with some contact cleaner.

If you are having other problems I would suspect capacitors.

-bob

Re: Yamaha TC-520 Cassette Deck

Hi Bob,
I started with new belts and a new reed switch as it was stopping play constantly. Mechanically now perfect.
I am in the process of re capping it. Originally it had loud hiss on the right channel but no audio during play, left channel ok. Now it has very low audio on the right and no hiss. I did spray lots of servisol super 10 in the switch and worked it a lot. I have swapped most transistors from one channel to the other with no change.
It's in near new condition, so worth saving. I will continue and finish the re cap and hope.
Many thanks for your help.
Adrian.

Re: Yamaha TC-520 Cassette Deck

Hi Adrian,

Did you also check out the TC-320A service manual available here? The schematic and board layout may be similar to your 520 since they are both two head machines. Also don't overlook the Record/Playback head and the cable going to it. If possible you could swap the head cable between left and right channels.

And keep cleaning the record switch, it might still be an issue and take multiple cleanings.

If you get desperate, there is a manual on ebay right now. I have no affiliation with the seller.

https://www.ebay.com/itm/Original-Factory-Yamaha-A-450-Stereo-AMPLIFIER-...

-bob

Re: Yamaha TC-520 Cassette Deck

Hi Bob,
The head was not working on one channel. Fitted a Pioneer head and all good. Thanks.

Re: Yamaha TC-520 Cassette Deck

Awesome! Good job. Thanks for following up.

-bob