prh said:Well, I am pretty certain that the LM317/337 devices can not provide an output voltage higher than the input voltage, and the voltage regulator circuit looks pretty much like the data-sheet implementation.
This is why I was curious about the voltages being applied to the regulator.
Otherwise, I would double-check which points are being used to check voltages, and if the volt meter has good batteries 8)
Naturally, I can't question your observations but I would like to make sense of them
well I'm also curious, if you disconnect mainboard and set 18 v trimmers to 5k, whats your voltage ?
btw, my psu is working fine, i have set it to plus minus 18 1.7 and 105 volt
give it a try 1