| Electronics > Repair |
| Slot 1 PC mainboard fried with non-standard ATX power supply |
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| canadaboy25:
I have removed the shorted southbridge and the board no longer overloads the power supply when connected. Obviously it does not power up as the southbridge was responsible for the power on signal. The 3.3V standby rail now draws 50mA. I was able to find a few discrete logic chips connected to the standby rail. Nothing tests obviously shorted. The ram that was installed during the overvoltage still works in another board so I am hopeful the damage is not catastrophic. I have ordered a replacement southbridge from china, so I will see what the board does once I receive and install the new chip in a couple months... |
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