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Sony Trinitron monitor
Hi you all.
My 2000 Sony HDM-200 trinitron monitor has slowly lost horizontal width over the years, now i'm just right at 96% and i have very little H.W adjustment left... the geometry is otherwise excellent. I have already resoldered the entire chassis about 4 yrs ago as it had some assorted intermittent faults, it worked fine since then... Is this one a simple fix or maybe i'm about to lose the flyback? |
#2
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You probably have a resistor or capacitor drifting out of tolerance.
If you can find the bad part, it should be an easy fix. |
#3
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I have to bring up this thread again as the monitor is now displaying some annoying retrace lines in the top 2 inches of the screen...
maybe the CRT is starting to go? |
#4
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I would suspect capacitors in the vertical deflection circuit, bad soldering, or bad soldering at the vertical output IC.
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#5
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hmm the retraces first appeared today but they seem to disappear after the monitor has warmed up for a half hour or so...
This monitor is 12 years old and has lots of hours on it... it's amazing it's still working and displaying a good picture! |
Audiokarma |
#6
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Kiwick-
Your description of the retrace line behavior (going away after warmup) exactly matches what happens with one or more bad electrolytic capacitors in the vertical circuits. If you or a friend has even basic electronic repair/soldering experience, you should be able to find and replace the bad ones. Likely, they have part numbers in the 500-599 range, based on other Sony monitors.
__________________
Chris Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did." |
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