Re: WG6100 picture fluctuation

When you have a problem that is affected by physical force (like flexing a
board) then you most likely have either a cracked solder connection, a
damaged/broken trace, or a bad/noisy potentiometer. I would suspect the
cracked trace or solder connection on one of the connector pins first at
this point.

John :-#)#

At 09:18 AM 2/1/2000 -0600, you wrote:
>Hi all,
>
>I've got a WG6100 here that's really puzzling me.
>
>The picture fluctuates (squishes up and down, left and right), and is
>rather small. Pressing and tapping on the deflection board has a
>direct effect. It is acting like an intermittent connection, but
>the fact that it is in both directions (X and Y) at the same time leads
>me to believe it is more power related.
>
>I have installed an entire Zanen cap kit in the monitor. I have
>resoldered all the pins (and taken some same paper to the pins to
>roughen them up), and resoldered anything that looks like it might
>have a bad solder joint. Check the main connector pins.
>
>A bunch of snapping seems to be coming from underneath the focus and
>screen knob on the HV unit. I can't tell it if is directly proportional
>to the screen fluctuations because both are happening too fast. The
>smaller picture (and the snapping) leads me to believe the HV is being
>driven too much (possibly?).
>
>Swapping out a known good deflection board solves all problems, so it
>appears to be local to the deflection board. Any ideas what part of the
>circuit could be causing this?
>
>--
>Mark Jenison
>
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Received on Tue Feb 1 16:23:26 2000