| Forum Home | ||||
| Press F1 | ||||
| Thread ID: 106243 | 2010-01-02 03:22:00 | No power, switch replacement type question... | Mcpisik (4924) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 844768 | 2010-01-02 03:22:00 | Hi folks... My old pc (one is my sig) is not turning on. Has light on mobo. No fans running etc. Studied on net how to multimeter test psu and all seems good to my knowledge... So as the power switch does nothing, I've shoved a paper clip into the 20pin mobo connector, in a black and green position. This has booted the pc. Is this just a non functioning power switch? I tried to short the power connection on the mobo, but didn't work hence why I ask...oh and also, should I leave the paper clip in there and use the psu switch for on/off (until I fix it) Cheers! |
Mcpisik (4924) | ||
| 844769 | 2010-01-02 04:33:00 | I've shoved a paper clip into the 20pin mobo connector, in a black and green position. This has booted the pc. How did it? If you haven't got the connector in the board, it can't boot. |
pctek (84) | ||
| 844770 | 2010-01-02 04:55:00 | How did it? If you haven't got the connector in the board, it can't boot. Sorry, I meant powered up... Fans, optical drives etc power up. The 20pin connector is not attached to the mobo while paper clip enables power. Could you suggest what might be at fault with the system? Would be appreciated thx... |
Mcpisik (4924) | ||
| 844771 | 2010-01-02 04:56:00 | If it boots by shorting it, the front of the case is stuffed. Replace the case. So does it have a 20 pin connector, or not? | Speedy Gonzales (78) | ||
| 844772 | 2010-01-02 05:09:00 | Cheers Speedy, Yes has a 20pin connector.. So if I replaced the power switch only, that should do it? (It's a thermaltake armor case, so would rather not throw it away) I couldn't get it to boot by shorting on the mobo (2 pins where the power switch connects to) Perhaps I'm not doing it correctly or shouldn't be... (But I wouldn't know the difference between shorting the 20pin or the mobo) |
Mcpisik (4924) | ||
| 844773 | 2010-01-02 06:34:00 | I couldn't get it to boot by shorting on the mobo (2 pins where the power switch connects to) Perhaps I'm not doing it correctly or shouldn't be... Did you remove all the plugs from the connector / header ? You need to have them all removed other wise one still may be the cause, then take a flat bladed screwdriver and touch the two pins that are the power As shown Here (www.imagef1.net.nz) you have to make sure there is contact, this should kick the board into life, then pull away the screwdriver. All the switch is doing is the same thing, making contact. The wire "trick" is just that, normally a mother board has to have the Power Connector in its socket and the PSU gets a signal from the board completing the circuit, the wire in the plug tricks the PSU into thinking its connected, and fires up the fans etc. |
wainuitech (129) | ||
| 844774 | 2010-01-02 06:57:00 | Did you remove all the plugs from the connector / header ?... Thanks... From the image you gave, I was touching the correct pins. Excuse the ignorance, but what is the header/connecter that I remove the plugs from? |
Mcpisik (4924) | ||
| 844775 | 2010-01-02 07:10:00 | The white plastic receptor/portion on the motherboard that accepts the 20 pin power supply connector. | bob_doe_nz (92) | ||
| 844776 | 2010-01-02 07:14:00 | The Header is the front panel connector, this supplies the connection point for the HDD LED, power LED, Power Connection,Reset and in this case the Speaker.Front Panel Header (www.imagef1.net.nz) You need to remove all the wires going to this header,not just the power, if one is causing the problem in the switch it can stop the rest from working correctly. You can also try changing the CMOS battery - that may have died, they are about $3. IF the boards still not booting - it is possible its died. BOB- I was referring to the front header, not the Power Socket :) I've shoved a paper clip into the 20pin mobo connector, in a black and green position. This has booted the pc. Do you mean it booted the fans only ??? |
wainuitech (129) | ||
| 844777 | 2010-01-02 07:45:00 | I had an issue like this not too long ago... but in my case the power button was stuck in the pressed in position, and it needed a bit of gentle prodding to get it to move freely again. Checked the reset button at the same time, and it was also getting sticky. Hey, as for those wires to your power button - trace them back to where they plug into the motherboard, and give each one a bit of up-down movement to scrub their contacts against the pins. |
Paul.Cov (425) | ||
| 1 2 3 | |||||