I second the motion to just replace it, with a good quality PSU. It seems to me this is a matter of a component in my power supply on its way to total failure. If I can save myself the money of buying a new power supply off eBay that may or may not work properly by replacing simple components I would like to. The +5v has a good resistance on the motherboard itself.
I have checked this resistance with my leads in both directions and tested the power supply when disconnected from the computer completely. My questions are: Should the resistance be that low?Īnd without a schematic is there any way to trace the +5v back without using my meter in continuity mode and trying to follow traces to get to the issue? The supply itself is a mess of silastic and very difficult to see on the top. The computer works but randomly restarts with no blue screen message. To the best of my knowledge the resistance shouldn't be that low.ĮGD IT EQUIPMENT DESCRIPTION YOU ARE BUYING A NEW x 1 HP 300w 24 Pin ATX Power Bestec ATX 0300 D 5 WC REV:B585008-001 EGD30 SHIPPING NO COLLECTIONSDELIVERED VIA. Always be careful when working with an active or live power machine.I have a Bestec power supply which tests at a resistance of 20 Ohms between +5v and ground. Warnings: If the power supply light remains flashing after you have restored power to it while it is disconnected from the motherboard, it may be a system failure in the power supply itself requiring replacement. Step 4: While the power is on, reconnect the P1 connection to the motherboard and you should now see that the light on the motherboard is solid. If it is not solid, disconnect the power to the power supply and wait until the light turns off completely. Step 3: Wait until the green light on the motherboard stops flashing and check to ensure that the green light on the power supply is now solid. This connection is the largest of the connections and should be listed as the 'P1' or 'Primary' power connection. Step 2: While the power is on, disconnect the power supply from the motherboard. Step 1: Ensure that both the power supply and the motherboard lights are flashing green, not solid or off. Symptoms: Flashing green light on both motherboard and power supply. Power outage or short in the surge protector. Problem: Your motherboard circuit has been cut.Ĭauses: Power disconnected during operation. This is an easy fix so here you go nice and simple:
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