Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

 
 
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Default STRANGE VIDEO DRUM MOTOR PROBLEM

I have a late 1980s low end vcr (Sanwa - also badged Lögik, Orion,
possibly Saisho etc) with an unusual problem. It came to me 'dead' -
with the 1.25A fuse in the power supply open (not black).
I replaced it and the thing seemed to work but soon I noticed that
when you stop the tape, the thing unlaces as usual, but the drum motor
does not switch off - it spins very fast, sounding like it's
'hunting'. The power/stby switch does not react either. If you put it
into play when this hunting whine is going on, you get a distorted pic
which clearly shows the drum's going too fast. So far i've yanked the
plug to avoid further damage. Obviously this i pretty worthless, I'm
just curious to see if anyone else recalls this problem and what
causes it.

-B
 
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