Re: Seeing red

["Paul Grammens" <grammens@svn.net>]

<mystix@direct.ca@direct.ca> wrote in message
news:S2Lo4.9793$mK.731973@brie.direct.ca...
> I think my RGB monitor is shot. Wilst taking a long phone call I turned
off my
> monitor to save wear and tear and when I turn it back on the screen glows
> brightly red. Even when there's no signal
> Anyways, does anyone know what causes it or if it's an easy fix? Currently
> there is no image. Just bright red as if the brightness and contrast
controls
> were boosted 150% beyond maximum adjustments. Even dialing the brightness
> and contrast controls down all the way has no effect.

Hmmmnnnn.... never seen one like that, where only one color was involved and
the contrast/brightness controls have no effect. Could be something in the
red circuit, which is located on the board attached to the rear of the
picture tube, or a defect in the tube itself.  I've got the training and
equipment, my approach would be to remove the back of the monitor, remove
the radiation shielding from the board I mentioned, and compare the voltages
on the red, green and blue input pins (where they connect to the tube). I
would expect that the red is much different than the other two. Then I'd
follow it back, looking for overheated-looking components and comparing with
the blue or green, until I find the point where the problem originates.  Or
just wait until I can pick one up at Goodwill for $5.
-Paul