moniotr problem,help greatly appreciated

[shortasswattsy]

Hey,
When i turn on my jamma cabinet, i hear a high piched constant sound coming from the monitor, i have no board to test if the monitor works, but when i plug my broken board in, i get colour on the screen so i can assume the monitor works, but what is the sound?
Cheerz,
-Adx

[BobA]

Hi pitched sounds are usually from the high voltage section of the monitor.  It is sometimes a really bad sign if you hear nothing because the HV is not working.

BobA