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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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PC power supply problem
Hi,
My PC went dead (no display, but the CPU fan spins). Looking at this, I naturally suspected the motherboard, but then I found the system works fine with another poer supply. Funny thing is, the defective(?) power supply seems to give all the voltages all right, but just doesnt start up the system. Could this be a 'power good' signal issue? If it is can it be tested? Another pointer: earlier, the CPU fan would initialise only after pressing the soft-on power supply switch on the mobo. Now, it starts the moment the system is powered up. On the other hand, if no load is connected to the PS, it seemingly behaves exactly as it should; off till soft switch pressed (green wire connected to ground). Before buying another supply, I'm wondering if there is anybody has seen this specific problem, and managed to fix it? Thanks and Regards, Anand |
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