Mark D. Zacharias wrote:


Yup.

It is the capstan motor driver that oscillates. Change 4
electrolyticaps on capstan motor board. Remove motor, and remove
flywheel from motor before attempting to repair!

The old caps can be a pain to remove, lot of heat is necessary. They
can be replaced with leaded versions with short legs.




I've seen bad caps on these too, but this still sounds like alignment issues
to me.

Could be wrong though, wouldn't be the first time....


Mark Z.



Hi there,
thank you for your replies.
I think it's not an alignment issue.
The FM from tape is in perfect rectangular shape for both heads.
The oszillations could also be seen on the 5V play-voltage to the
head-amp with an amplitude of 50mVpp. Assuming a problem with the
filter caps for the 5V line in the head-amp, I replaced the electrolytic
in the head-amp without success :-/

73
Peter