Re: WG6100 HV Crackle

Have you checked the DC voltage on pin 5 of the HV cage molex? It
should be at around 180 volts. (Alternatively you could use an HV probe
to set HV to 19.2KV, if you have one) Adjust using the pot in the middle
of the HV pcb. If it is way high, maybe it would cause arcing. ;-)

Noel

Dave Downin wrote:
>
> > "Gregg Woodcock" <woodcock@fastlane.net> wrote:
> >
> > Yes; the chassis transistors!!! Try swapping those and make CERTAIN the
> > ones on the "bad" monitor are properly insulated. I suspect the problem is
> > a poorly insulated transistor allowing the chassis to drift away from ground
> > and then short into the focus assembly from the frame...
>
> I checked and replaced all the mica insulators. Still same problem. So, I
> isolated the HV unit from the chassis ground to see if that fixed the
> problem... it didn't. Any other suggestions?
>
> --
> Dave Downin (dave@arlo.net)
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Received on Sun Feb 13 21:29:16 2000