PSU with a model number HP-D2402E0

Fault: When the start button on the desktop is pressed the fan briefly (1 or 2 seconds) starts spinning and then stops. Sometimes it will continue starting and stopping, other times it will cycle once and then stop.

Tests conducted: I removed the PSU from the desktop case and plugged it in to the mains. I then shorted the green wire to earth and the fan spun up normally So when the PSU is connected to the motherboard it fails but when it is disconnected from the motherboard it works as normal.

Possible conclusion:...

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Hi. My name is Dan. I live in Yangebup which is a southern suburb of Perth, Western Australia. I'm married to Charm and we have four daughters with four grandkids (three boys and a girl)

I've been interested in electronics for quite a while. I qualified as an electronics technician in 1995. I continued to study, eventually gaining a Diploma in Psychology and Emergency Management. I'm a foundation level amateur radio operator (my call sign is VK6FANG). At present...