8 Dec
2009
8 Dec
'09
7:44 p.m.
On Mon, Dec 7, 2009 at 9:23 PM, Josh Dersch <derschjo at mail.msu.edu> wrote:
_What_ flashes on/off? The screen (If so, it sounds like a beam limiter
problem, the circuitry is detecting excessive CRT beam current and
cutting the CRT off to protect it). THe power-on LED (sounds like the
SMPSU Is tripping and restarting, maybe a short somewhere in the
horizontal output stage).
Picked up an old terminal in very nice cosmetic
condition;
Funny you should post this. I was about to post about my Sony Multiscan
400PS monitor. It flashes on and off about once a second every second. I don't know much about how to fix monitors. I know
the theory, but wouldn't
begin to know how to fix one.
I remember from years ago that you could buy a sort of kit containing maybe
half a dozen parts, caps, large resistors, etc. If you replace all of the
Ah, lucky-dip servicing. Second only to board-swapping in my reckoning
:-).
More seriously, if shotgunning all those parts doesn't help, or changes
the symptoms (but doesn't fix the problem), what then? You are much
better off IMHO (as always) looking for the fault in a logical manner and
curing it. Not changing things effectively at random until somethign
seems to work again.
-tony