benq fp91g+ (q9t4) monitor not turn on

[paulmars]

benq fp91g+ (q9t4) monitor. Mostly wont turn on. Once in awhile it does

and works fine. However, that's very seldom. The on off switch hot side

is 3.3vdc. The switch grounds that when its pressed and my dvm then

reads 0vdc. Every time. Ive traced it to the display circuit board

plug, gray wire. So, it goes from 3.3vdc to 0vdc when the switch is

pressed - Every time. Over and over I can do this and every once in

awhile, the unit powers up and it works fine. however, the next time,

it wont power up.

Any ideas what could be wrong? All the caps look fine. Ive also

inspected all solder joints.

tks,
pa

 

[paulmars]

7.25 yrs

 

[paulmars]

I suspected your question was irrelevant, and it was.

 

[paulmars]

that's a bit premature. like saying hey your 1923 Ford model A needs replacing, before you look and see what is wrong. Ive never bought a monitor, computer, printer, camera, kitchen blender, etc. I fix other ppls discards.