May be useful if you have a problem with this type 25x10 Panasonic ETXEZ654M7F psu. I've made a voltage overview from the safe side of the power supply unit, and the hot side. But be carefully with the hot side, there are 324v dc places. Use a good quality multi meter if you want to measure this high voltages. Nevertheless most of the problems arises on save side, and the measurements could also give a impression if it is a problem on the hot side. For convenience, I also give most data sheets related to this type psu. These are the, IC600 Marking Code MP2354DS IC700 Marking Code MP2355DN D104 Marking Code 1N4007 OR BYV26E OR M7 (zipped in one file) Q100 Marking Code 6C S Q200-Q501-Q401 Marking Code 23/22 (Y1) IC400-IC500 Marking Code 6CC088YM TL5001CP IC101 Marking Code ICE2A765P2 Q400-Q500 Marking Code 18P06P D300-D301 Marking Code FCH05A10 IC100 Marking Code MIP2E1DMY ICB30-IC200 Marking Code SUMC TL431 1018N PC100-PC200-PC300 Marking Code 3171 R 03 (Optoisolator) Be careful with the measurements, do not make any short circuit during measurement. And avoid the high voltage area. Good luck!. Click on the image for a fully view. One TIP.. To activate the psu it's better to create a circuit that feed the 3.3v to the pin 4 of the psu. See more about it on this topic. Testing the DM8000HD psu without the motherboard.