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HoustonEE
 
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Default viewsonic monitor P810 with vertical problems

Thanks for the feedback - As it turned out the -16 V fusible resistor
was open - replacing that fixed vertical deflection problem. After
that the problem with the horizontal sync was still there. That turned
out to be the fusible resistor on the H_PULSE signal. Now it seems to
go in an out of focus. Also the thing seems really noisy - high picked
whining, plus clicking popping. I can't see any arcing in the dark,
and nothing seems to be getting hot that I can find. As always, I'm
open to suggestions.





(HoustonEE) wrote in message . com...
Chassis HV8SA

All,

Originally monitor would not power up, made ticking sound only. Thanks
to postings found here, found several bad parts around HOT
(q855,q719,q550)

Now monitor has no horizontal sync, and vertical is top half of screen
only, with horizontal white line in the middle. Have found and
replaced bad C408. All diodes in vertical section check OK.

Anybody have any suggestions on what to check next? Also, I found it
very difficult to probe anything on the chassis to make measurements.
Is there a trick to making this feasible?

I was going to offer to trade schematics for advise, but I'm instead
just going to post a link and trust in the kindness of the readers.
It's for a panasonic monitor, but it uses the same chassis.

http://rv6llh.rsuh.ru/panasonic/TX-D2162.ZIP

Thanks in advance for all assistance.