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Old 12th Jun 2022, 10:07 am   #61
ajgriff
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Join Date: May 2004
Location: Halifax, West Yorkshire, UK.
Posts: 2,583
Default Re: Just got myself a commodore pet setup but not working

Quote:
Originally Posted by SiriusHardware View Post
AJ, where did you find the layout diagram? Is there a PCB track overlay diagram as well? We can mark up most of the required measurement points on the component layout you posted in #52 but it would be physically easier to get at some of them on the track side of the PCB.
Bo Zimmerman's site for the layout diagram:

http://www.zimmers.net/anonftp/pub/c...032/321449.gif

I don't think I've ever seen a track overlay diagram for a PET board. Personally I wouldn’t attempt any of this without using probe test clips so that my hands could be well away from the monitor when it’s live. Also I'd try to avoid releasing the PCB and take all the readings from the top of the board.

I'll reply to some of the points raised in your other posts in due course.

Alan
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