First post, by Hojo82
So I just purchased a P2B-DS from Ebay and built an entire machine around it, but unfortunately when I attempted to power it on, nothing happened. Now when I turned on the PS switch in the back, I get a brief spin of the PS fan and the CPU fans, along with a small sound coming from the onboard speaker, but nothing else. When I press the case power button in order to turn on the system, nothing occurs. I've removed everything (including RAM) except for one CPU and the CPU terminator and get the exact same behavior. However, when I remove the CPU and turn on the switch to the power supply, the power supply fan turns on and stays on and the front panel power light blinks.
At this point, I turned off the power to the back, put the CPU back on to the board and attempted turning on the system again to no avail. I've looked at all of the caps and none of them seem to be bulging at all. Furthermore, I've tested the voltage across the ATX connector PS On pin to ground and get about 135mV without pressing the front button at all. Also, the standby +5V measures about 5.1V so I'm guessing the power supply is good.
So even if the caps all look good, is it likely that the board needs a recap? Is there anything else I can test to perhaps get a better handle on the cause?
Thanks in advance for your help! Please let me know any additional information you might need.