SANYO M9926 boombox cassette deck fix

This is a SANYO M9926, a very simple boombox. But it has a nice and powerful sound.

The cassette deck did not work, so I checked inside. There was a white plastic pulley that was damaged probably by the heat and chemical reaction with the rubber drive belt. As soon as I found out about it, I was able to see that there would be a wow and flatter sound problem from this damaged pulley.

But the problem wasn't only a sound problem, but it had also weak torque of FF/REW problem. Since this cassette deck only use one drive belt for all movement, if I adjust the belt for the best play sound, then FF and REW will be powerless if I adjust the belt for the powerful FF and REW, then the sound becomes terrible. So I needed to choose one of them, and I choose the sound quality, but not power torque for the FF and REW.

Total work hour was 11 hours 15 minutes. It was fun to find out how this cassette deck works.

Enjoy!!

The owner of this boombox is Mr.Ralf. Thank you for letting me to restore your boombox.

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Demonstration tape (Hitachi original)
Battle of Jerico

Donation welcome!

I appreciate if you fund me for a new camcorder and a computer for editing the video.

https://www.paypal.me/teddyhashee358

Teddy Hashee