[vcf-midatlantic] Pet Help
ethan.dicks at gmail.com
Fri Jun 28 19:48:17 EDT 2019
On Fri, Jun 28, 2019 at 6:19 PM David Hoelzer via vcf-midatlantic
<vcf-midatlantic at lists.vcfed.org> wrote:
> I appear to have a strong clock, phi1, phi2, and there appears to be data appearing on the data lines of the 6502
> (see the logic analyzer output).
Can't. The list strips off attachments. You have to host the pics
somewhere and post links.
> When the screen goes dark, the tube is still glowing, so I'm guessing that it's a video circuitry problem, but I'm stumped as how to tell if it's on the board or on the CRT board. (This is a 2001-N 32k..)
If you have a logic analyzer, watch the video data signal that goes up
to the CRT board - the three signals should be H Sync, V Sync and
Flickering and darkness make it sound to me like CRT board stuff -
cold/cracked solder joint, bad semiconductor, bad cap...
> Photos attached. If they don't go to the list (I don't remember of they do)
They do not.
> ping me and I'll send them direct.
Sure, or host them and post links.
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