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video problems: debugging help
Date: Mon, 11 Feb 91 09:52:39 MST
From: email@example.com (David R. Strip)
My dying 3645 refuses to send video to the terminal (or so it seems).
I have eliminated the following possibilities (usually by swapping parts
with a 3640 next to it):
paddle card (is this the right name for the small card in the back
that has the video output?)
The machine appears to be alive, since i get nice random patterns on the
monitor that disappear for a moment when I blindly type reset video.
What else can I pull/swap to try to isolate the problem?
Have you done anything since reboot, or did you boot differently, by
any chance? What I'm getting at is that it sounds somewhat like the
behavior one can get if the wrong monitor driver is loaded. You might
try the FEP command Set Monitor-type [M or P]. If this doesn't
correct it, set it back quickly, since I don't think it's too great
for the monitor to have it running with the wrong one.