Almost every DiscoVision player out there unless it was in recent history overhauled and serviced has any number of issues from weak tubes to PSU problems. Getting support for them isn't easy. Finding people who will service them is near-impossible that I can tell. Mine seems to detect the presence of a laser reflecting off the disc and striking the photodiode array but will not lock the focus. I've been told caps. I'm dubious and there's a bunch of variables at play. I would absolutely love to find someone experienced with the 7820 who could help. In the meantime I'll show you how to open it to reach the major cards but NOT the PSU or the spindle motor. That's buried for reasons I'll mention.
The service manual for the PR-7820 can be found here:
archive.org/de...
The "General Adjustments" manual for the PR-7820 can be found here:
archive.org/de...
A marketing brochure can be found here:
archive.org/de...
Remember to follow me on Twitter at @CelGenStudios to keep up to date on what I am doing and what might be happening in the next video.
Негізгі бет Unable to Focus: PR-7820 "DiscoVision" Player
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