Dell M991 monitor question
Richard:
Have you checked for a bad or weak electrolytic capacitor in
this circuit ? Use an ESR meter if you have one.
I would also follow the gate circuit on the FET to see where the
drive signal is comming from. It should change when the monitor's
resolution changes.
You might also consider using a heavier FET, such as a IRF740 or IRF840.
John
|