viewsonic problem

[dave]

this monitor gets a great picture...but it has a horizontal tearing
at the top of the screen...where do i start to check it
out....thank you..... Dave

 

[Jerry G.]

Do an ESR test on all the capacitors in the horiz scan, HV generator,
and power supply sections to start with. The hardway without an ESR
meter is to sub them all to test, or to use a scope and go through all
the stages to evaluate their performance. Many of the caps can cause
instability of scanning and performance. The exact cap would not be easy
to guess at in these monitors.

If you are not equipped and trained to work on TV equipment, I would
suggest you give the monitor out for proper service. There are also many
safety issues involved.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
==============================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
Instruments http://www.zoom-one.com/glgtech.htm
==============================================
"dave" <k8sjs@sbcglobal.net> wrote in message
newsx_7b.1113$ev2.788612@newssrv26.news.prodigy.com...
this monitor gets a great picture...but it has a horizontal
tearing
at the top of the screen...where do i start to check it
out....thank you..... Dave

 

[dave]

Jerry...yes I have some experience...but did'nt know what section
to start.....I have an ESR meter...but needed the
confidence.....thanks again....seen you posting and helping alot...I'm
glad to get your input.... Dave