Early 1980s Hitachi VCR Having Video Problems

[Electronic M]

You probably shorted something out with that screw.

The speed is regulated by the capstan and a complex electromechanical feedback loop that takes in speed sensor, tape signals (control track, etc.), etc. and adjusts motor speeds etc. accordingly. Several different things could be bad, but it's looking like most remaining possibilities are electronic....Those circuits require quite a bit of VCR specific knowledge and test equipment to properly troubleshoot and adjust...Enough so that it may be better to just find another VCR....

[Captainclock]

Originally Posted by Electronic M

You probably shorted something out with that screw.

The speed is regulated by the capstan and a complex electromechanical feedback loop that takes in speed sensor, tape signals (control track, etc.), etc. and adjusts motor speeds etc. accordingly. Several different things could be bad, but it's looking like most remaining possibilities are electronic....Those circuits require quite a bit of VCR specific knowledge and test equipment to properly troubleshoot and adjust...Enough so that it may be better to just find another VCR....

I see, well would you be interested in it, and monkeying around with it or know anyone on here that would be interested in it? I would hate to see this thing get recycled, because its a complete unit with its original remote and owners manual and everything.