Quote: Originally Posted by regal If you are reading 0.5V on the heatsinks they aren't isolated. thanks for the quick response. Is the problem the heatsinks isolation from the IC or from each other. Any suggestions on how to better isolate the heatsinks.

Quote: Originally Posted by regal Are you sure your heatsinks are isolated? Sorry for the delay, checked the isolation of the heatsinks. The IC's seemed to be installed correctly with mica sheet and the nylon washers. However i am getting a reading of 0.5v on the heatsinks...

Thanks Eokboy, they both ponit to 100uf for those caps, so i guess thats not the problem.

Having a little problem getting any kind of readout on PB+ test point. I have hooked up everything except the jumpers and am getting a reading of 18.6 volts on the screws holding the yellow and black wires coming into the board. My led on the tubes light up fine so i know some power is getting...