Hi,

I'm having a problem with my Optiquest Z90 monitor - Model#
VCDTS21603-1M.

Q442 is being blown out almost instantly on power up. Nothing else
appears to be wrong. No obvious burned parts, and no loose solder
joints that I could find. I traced the leads from Q442 back and tested
what I could along that path, everything seemed to check out.

I'm wondering if anybody is familiar with this model and could tell me
what may cause this, or at least what Q442 does, or can point me to a
schematic. I have had zero luck searching for this model online.

This is a last ditch effort before I junk the monitor, which would be
a shame because otherwise it was a pretty nice one.

Thanks in advance