Sony TC-40 Repair and Testing

Testing with a good cassette.

After changing the TC-40 drive belt, the speed required adjusting. For this, I used my WS-48 cassette for speed calibration. Luckily, the designers have provided a preset for just such an adjustment, and therefore I had the unit working perfectly again. The motor speed is surprisingly smooth; however, people sometimes leave the unit in the play position during storage, resulting in an indentation of the capstan on the pinch roller. This will result in producing a periodical wobble in the speed.

I also found a Lionel Richie cassette in the unit, and I was very pleased because he was one of my favourite 80s and 90s singers. He was the disco god back then; I wonder what happened to him? I must remember to get some of his old records because he made some wonderful songs with great lyrics. Now that I am older, I find myself appreciating the music we had back them.

Testing
Microphone Side
Meter Indicator
electret Microphone
Clear Cassette Case

With a clear cassette case like this, you can see the tape path, head, and tape-end sensor. I was hesitant to use this wonderful 1992 Motown Record Company Compilation, but was confident that the unit was working perfectly and would not destroy the tape. If you are unsure of the unit, then it is best to test with Max Bygraves or Des O’Connor tapes that nobody will miss. I am of course just kidding...

Repair

This Article Continues...

Sony TC-40
Drive Belts
Heads and Deck Mechanism
Audio Board
Loudspeaker
Repair and Testing
Battery Holder
Wiring
Worn-out Belts