On Sun, 05 Jun 2005 14:11:58 +0200, Bram Stolk wrote:

This VCR works fine for about 5-10 minutes, after a while it slows down it's
capstan speed and continues to playback in a jerky mode with distorted sound
and picture noisebars.
All my supply voltages seems correct and Caps ESR on Powersupply are a OK.
Lack of proper documentation prevents me from trouble shooting Capstan servo
circuits. Is there anybody out there having experienced similar problem(s)
and helping me out ?

TYIA

I'm not sure how old this unit is, but Sony VCRs used to have problems
with the capstan rotor warping and rubbing against copper windings
underneath.

It produced a condition similar to what you're describing. We would
just end up replacing the capstan motor assembly in those cases. Not
much else you can do.

Randy