Hi all,
I just got an old ATX from scraps and wanted to turn it into a decent lab bench power supply. I've read quite many related old topics but none of them work out with my problem so I make this thread:
When turning on, it works for less than 5 sec while introducing more and more "shhhhhhhh" sound then shut off. For those next times I turned on, the working time is less, it turns off faster and faster until it shut down immediately after turning on. (still make some shhhhh sound though).
I've connected my ATX just exactly like following:
Green wire to black wire with a switch in between.
Grey wire I hook with LED and 330ohm resistor in series then go to ground (black wire).
Brown 3.3V sense with Orange 3.3V or course.
When turning on, it works for less than 5 sec while introducing more and more "shhhhhhhh" sound then shut off. For those next times I turned on, the working time is less, it turns off faster and faster until it shut down immediately after turning on. (still make some shhhhh sound though).
Can you point me out what fault and how to fix this ? or it just that my ATX is dead? Then which component should I look for replacement?
Thank in advance!
I just got an old ATX from scraps and wanted to turn it into a decent lab bench power supply. I've read quite many related old topics but none of them work out with my problem so I make this thread:
When turning on, it works for less than 5 sec while introducing more and more "shhhhhhhh" sound then shut off. For those next times I turned on, the working time is less, it turns off faster and faster until it shut down immediately after turning on. (still make some shhhhh sound though).
I've connected my ATX just exactly like following:
Green wire to black wire with a switch in between.
Grey wire I hook with LED and 330ohm resistor in series then go to ground (black wire).
Brown 3.3V sense with Orange 3.3V or course.
When turning on, it works for less than 5 sec while introducing more and more "shhhhhhhh" sound then shut off. For those next times I turned on, the working time is less, it turns off faster and faster until it shut down immediately after turning on. (still make some shhhhh sound though).
Can you point me out what fault and how to fix this ? or it just that my ATX is dead? Then which component should I look for replacement?
Thank in advance!
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