Picked up a U5000, blowing HOTs. Recapped, all service packs, and new flyback, still takes out instantly on power up. Light bulb test confirms issue is on the power supply side. Unloaded I have about 160v, connecting bulb and it starts ticking. Power supply service pack was done. Swapped out u101 and T101, no change. All diodes tested ok. This is the first one I've had blow hots and the issue be on the power supply side. Any idea what I should be checking next?
