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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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Good day all!
I have an ATX power supply for a small form factor PC (Shuttle, I-will XPC) and it is currently broken. Inspecting the power supply, i found out that when I jumper Pin 14 and Pin 15, the fan will spin (indicating that there is power) however it will die out eventually after a few seconds. After working with GOOGLE and searching forums and all, I found out that a certain TTL transistor is responsible for latching the circuit from POWER_OFF to POWER_ON, the problem is, Im not pretty sure if this is the right diagnosis, and if there are other possibilities why this PSU wouldnt power up. I would really appreciate if anybody can give an insight to this, I would give further details on my troubleshooting if asked. ![]() thank you very much - Mannix |
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