Hello guys,
I have a problem with a desktop computer that cannot start (cannot turn on when pressing the power switch).
I know for sure that power supply is Gigabyte P750 GM, but I cannot tell the manufacturer of the motherboard (LGA 1331). All I can read is the following number on the sticker: 706023 - 01460 - MB1180 - b05 1407.
Motherboard is most likely Gigabyte X570 AM4
The problem is that computer cannot start when power switch is pressed.
So I first tested the PSU. I have plugged out ATX 24 pin power connector from the board and use paper clip to short pins 16 and 17. When I do this, PSU starts and I can measure all voltages (3.31 V, 5.01V, 11.99V). They seem stable. So at first I suspected motherboard, but then I noticed something that I find odd.
When power cable is unplugged, each time I connect pins 16 and 17, there is a clear click sound inside the PSU.
The owner of the PC says it didn't die suddenly. Two or three times before this happened, computer also didn't start, but it needed a few times pressing power switch to start.
I have tested the power switch (multimeter in continuity mode) and it works OK. Each time I pressed power switch, the resistance between to leads drop to 0.1 ohm.
Can you advise me what to try next? I would try to test it with another PSU, but I'm interested to learn if this clicking sound in the PSU (with no power) OK when shorting pins 16 and 17?
Thank you.
I have a problem with a desktop computer that cannot start (cannot turn on when pressing the power switch).
I know for sure that power supply is Gigabyte P750 GM, but I cannot tell the manufacturer of the motherboard (LGA 1331). All I can read is the following number on the sticker: 706023 - 01460 - MB1180 - b05 1407.
Motherboard is most likely Gigabyte X570 AM4
The problem is that computer cannot start when power switch is pressed.
So I first tested the PSU. I have plugged out ATX 24 pin power connector from the board and use paper clip to short pins 16 and 17. When I do this, PSU starts and I can measure all voltages (3.31 V, 5.01V, 11.99V). They seem stable. So at first I suspected motherboard, but then I noticed something that I find odd.
When power cable is unplugged, each time I connect pins 16 and 17, there is a clear click sound inside the PSU.
The owner of the PC says it didn't die suddenly. Two or three times before this happened, computer also didn't start, but it needed a few times pressing power switch to start.
I have tested the power switch (multimeter in continuity mode) and it works OK. Each time I pressed power switch, the resistance between to leads drop to 0.1 ohm.
Can you advise me what to try next? I would try to test it with another PSU, but I'm interested to learn if this clicking sound in the PSU (with no power) OK when shorting pins 16 and 17?
Thank you.
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