Configuration (troubleshooting):
Board: Socket AM3+ Gigabyte GA-78LMT-S2PT
CPU: AMD FX4300
PSU: 500W Peak
Other components:
GPU: ASUS Nvidia GTX960
Mem: 12GB (8+4) 1333
HDD: Seagate 1TB SATA
This machine was working before I moved it to another place.
With only the PSU and board connected (CPU power connector unplugged), power seems to flow. If I add the GPU, it receives power too and the fans on it work. See: (my phone is ancient, but I think the images are clear enough to convey what's happening)
When I plug in the 12V CPU power, the machine doesn't start. The fans momentarily start up for half a second then die. If I add a RAM stick, it's the same deal. And so for any other additional devices. Basically, it's probably due to the CPU power being plugged in.
I've checked the pins on the CPU power connector and I get a 12V reading. (See: ) So I don't think the connector is busted. Without the connector plugged in, the devices on the board (except the CPU) seem to receive power.
The whole story:
The machine was working before being moved. After it was moved, it started up a couple times and turned off within a few minutes. Later, it seemed to start up with everything but the GPU connected, but I didn't have a VGA cable to check the output. I didn't hear a POST beep though. I think 500W was sufficient for it to work with the GPU plugged in though because it was working well enough before being moved. Then finally the machine died completely and wouldn't start at all.
I think the CPU is most likely the part that is dead. If not that, then the board. The PSU seems fine because it can operate the fans without going through the board and shows the expected readings on the pins.
I'm not really all that experienced when it comes to hardware troubleshooting. I can tinker here and there and put a machine together, but I can't say with certainty what's wrong here. I'm also a bit tight on cash right now, so I need to know which part needs replacement so I may only change that particular one and not buy a whole new machine.
Any help would be appreciated. Thanks.
2 Reset to default
