I have a vision master pro510. The problem I am having is that the power goes on for a second, I hear a small buzz and then it turns off. The power light turns green for that second and then off. I have to unplug the unit for about 5 minutes before I can get it to repaet this. I get no picture or display at all. I just downloaded the schematics and was wondering if anyone would know where to start. I have tried another monitor and it works fine

Thanks,

Scott

Replace C932 before you do anything else.

The most common problem with this unit is C932 gets tired and causes voltage overshoot from the psu, this usually kills Q503 which blows R961 which on the schematic is shown as a resistor but all of the units I have repaired with this problem have had a 4A axial fuse in its place.

Less common is that it kills the video output IC202.

Rich

Thanks,

I will take your advice and give it a shot and let you know the results.

Scott