[SOLVED] How can i test the case power button?

cdpaul · 05-19-2008, 07:36 AM

I have a non working pc, tried a new power supply but still nothing.

Is there a way to test or bypass the power button, or can anyone suggest anything else to resolve the issue?

Thanx
Paul

**WereBo** · 05-19-2008, 05:15 PM

Allo cdpaul

If you can trace which wires from the power-switch button go to which pins on the motherboard, you can either pull the leads off the motherboard (after taking a note of where they go back

) and check the switch+wires with a torch-bulb and battery, continuity-meter or multimeter.

Failing that, try bridging the motherboard connection pins with a short length of wire for a second or so. Take care NOT to contact any other nearby pins though, that could easily end in tears

**magnethead** · 05-19-2008, 10:37 PM

I usually, when building/testing scrap systems, just grab a 3mm straightblade and short the 2 switch pins.

If it still doesn't turn on, unplug the 20 pin connector, and short the green wire to ground (make sure you're insulated from any metal or wires) while the PSU is plugged into a load, and see if it kicks on.

cdpaul · 05-20-2008, 01:38 AM

Thanx guys

05-19-2008, 07:36 AM	#1 (permalink)
cdpaul Registered User Join Date: Oct 2007 Posts: 109 OS: XP PRO	[SOLVED] How can i test the case power button? I have a non working pc, tried a new power supply but still nothing. Is there a way to test or bypass the power button, or can anyone suggest anything else to resolve the issue? Thanx Paul

05-19-2008, 05:15 PM	#2 (permalink)
WereBo Resident Village Idiot Join Date: Apr 2008 Location: SE London, UK Posts: 14,015 OS: Win-7 My System	Re: How can i test the case power button? Allo cdpaul If you can trace which wires from the power-switch button go to which pins on the motherboard, you can either pull the leads off the motherboard (after taking a note of where they go back ) and check the switch+wires with a torch-bulb and battery, continuity-meter or multimeter. Failing that, try bridging the motherboard connection pins with a short length of wire for a second or so. Take care NOT to contact any other nearby pins though, that could easily end in tears __________________ I shall meet all of my deadlines directly in proportion to the amount of bodily injury I could expect to receive from missing them.

05-19-2008, 10:37 PM	#3 (permalink)
magnethead Registered User Join Date: Mar 2006 Location: Texas, USA Posts: 3,568 OS: Vista ultimate 32bit My System Blog Entries: 3	Re: How can i test the case power button? I usually, when building/testing scrap systems, just grab a 3mm straightblade and short the 2 switch pins. If it still doesn't turn on, unplug the 20 pin connector, and short the green wire to ground (make sure you're insulated from any metal or wires) while the PSU is plugged into a load, and see if it kicks on. __________________ For proper support: what are you running? graphics, cpu, m/board, ram, PSU brand wattage PCI-E requires 26 amps at 12 volts. That's a 650W PSU. Power Supply Info and Selection . Info on thermal compounds & application . TEST PSU USING MULTI-METER . Bench Testing Your System

05-20-2008, 01:38 AM	#4 (permalink)
cdpaul Registered User Join Date: Oct 2007 Posts: 109 OS: XP PRO	Re: How can i test the case power button? Thanx guys