Sony PVM-5041Q won't power up.

[Devicemodder]

Recently picked up a 5 inch PVM 5041Q from ebay. Discovered that it won't power up.

What happens is: I push the power button, the green light comes on for a second and then shuts off, as if the psu overcurrent is tripping. All fuses test good in the set. If I supply 12V to the 12V connector on the back, and try to turn it on, same result but this time I get a high pitched squeal from the flyback area.

Short of replacing capacitors, I am stumped as what to do.