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PC power on - start, stop, start, stop, etc - eventually powersup
On Dec 27, 5:55*am, spodosaurus wrote:
My voltages were all within 5% of nominal voltages on both PSUs - I tested these before I did anything else. I had a PSU test okay with my digital multimeter before, but there were fluctuations on the +5VSB line that were causing problems that were only detected by a PSU tester that was inaccurate and only reported to one decimal place, but it did update frequently enough that I could see the +5VSB fluctuations. Just in case there was a +5VSB issue, I switch the rear usb power from that line to +5V using the motherboard's jumpers without success. Your specs -5% - are an ATX spec but are not correct for what is measured. Post those numbers here because being inside another spec is only one part of information in those numbers. If a power supply test (near zero load) detected a problem, then removing a near zero load (USB) also accomplishes nothing. When the +5VSB is connected to a load (motherboard), what does the multimeter actually read? |
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