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Old 4th May 2021, 4:59 pm   #1828
Timbucus
Octode
 
Join Date: Mar 2019
Location: Barry, Vale of Glamorgan, Wales, UK.
Posts: 1,363
Default Re: Non-working Commodore PET 3016

Quote:
Originally Posted by ScottishColin View Post
Perhaps I shouldn't have cleaned the already working CRT board, but it was filthy....

Colin.

Quote:
Originally Posted by Timbucus View Post
That looks like vertical hold being lost for a moment - missed frame pulses or the like?
No you were correct - it is better to remove any dirt and then correct any issues as dirt can cause worse faults as it can trap damp etc...
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