Internally the VCR contains many drive belts which are used in the
mechanics of tape transport. With age these belts become slack causing
malfunctions and when this happens the whole lot should be replaced.
No E-E sound
This is usually caused by failure of the TA7607AP FM sound decoder IC.
It is IC002 on board U001.
Failure to load a tape
The cassette carriage can fail to operate. This is caused by breakage of
the plastic gears in mechanism. When this happens they
have to be replaced.
Tape failt to thread up
This problem is usually caused by failure of the loading belt. The best
cure is to replace the belt.