The power switch does not want to turn on the computer. The last time it was shut down I pressed it 20-30 times and eventually it started the computer. Inadvertently shut it down and now the power switch does not appear to want to turn on the computer. Motherboard is a Acer G643T motherboard and the connector on the motherboard has 6 wires, red/white to disk drive activity light and a white/blue and white/gray to the power switch
The front of your computer is the Front Panel.
The area of contact pins on the motherboard, that the Main wires from the Front Panel go to, is the Front Panel header.
Main wires such as Power On LED, Power On switch, HarDDrive activity LED, and Reset switch; IF used.
Suggest KEEP track of where those wires go!
Make a drawing, and notes. I even use a magic marker, (Sharpee?), and make a notation of the Front Panel header pinout, on the floor of the computer case.
In this particular case it isn't known if the Power On switch is the problem, or the Power Supply.
Power On switch;
Power UNPLUGGED to computer, Anti-Static Precautions FOLLOWED; (Don't know? Post back in a Comment),
Remove the twisted pair of W/B and W/G wires, to the Power On switch pins, in the Front Panel header.
Plug power back into computer.
Use a small flat tipped screwdriver, and touch the two Power On switch pins. (Jewelers screwdriver works well for this application)
Power Supply comes on? Bad Power On switch.
Allow Windows to fully load, run for a few minutes; then turn the computer off normally.
Jump the two Power On switch pins again.
Power Supply comes on? You DEFINITELY have a bad Power On switch.
Power Supply does NOT come on?
We will go to a further diagnostic test then.
Awaiting results for first test, then we will go on.
Post back in a Comment.
Regards,
joecoolvette
[Also; is the computer dirty inside? ]
To Add: Remove the case screw from the Rear of the Left Side Panel, (Looking at the computer from the Front) Slide the left Side Panel back, then come straight out.
Clicking the two power on buttons, nothing happened.
My apologizes, I made an assumption. Based it on the fact you knew where the main wires plugged into the motherboard. Do I assume the main wires end in a plug connector, and said plug connector plugs onto contact pins of the motherboard? To regress; The front of your computer is the Front Panel. Those contact PINS on the motherboard, that the plug connector plugs onto, is the Front Panel header. Two pins in the Front Panel header, are briefly connected together by the Power On switch. (The Power On switch is a Momentary Contact Switch)
You can see by looking at the plug connector, and the White/Blue-White/Gray wires, as to which 2 pins are for the Power On switch. What I would like you to do is briefly touch across those 2 pins, with a small flat tip screwdriver, (Jewelers screwdriver works good for this) The tip of the screwdriver touches THOSE two pins only. Contact period with screwdriver tip? No more than 2 seconds. This method bypasses the Power On switch. This way if the Power Supply comes on, you know the problem is the Power On switch.
Power Supply does NOT come on there is another simple test. If you still do not understand the above, that's OK. Post back in a Comment, and we'll work it out. Regards, joecoolvette
(It is also my understanding that there is only one Power On button,http://support.gateway.com/s/desktop/200... )
According to an Acer document, there are reset switch and power switch,
back row 9 7 5 3 1 and front row 10 (none) 8 6 4 2. According to the plug, it the white/gray and white/blue with the white/blue on pins 2
4 and the white/gray on 6 8. This does not match the docs I have so I don't know which two are the power and which two are the reset.
Now I understand. No. The Reset switch is a reboot switch. Another way of stating is Restart switch. Not power on. Going on...........you're confusing me. The ONLY two pins you want are the Power On button (Switch) pins. I also see now that perhaps the color coding is different than I thought. Stating White/Gray means a wire with White insulation on it, and a gray stripe. Same thing with White/Blue. You are talking 4 different wires. I see where you're coming from now. It is my humble opinion that pins 6 and 8 are the Power On switch pins. Yes, I'm guessing, but really I'm formulating a Hypothesis. An intelligent guess. (Move over Spock) YOU, of course can tell me if I'm right. Yes? Then power supply plugged into power, touch across those two pins briefly, with the screwdriver tip. Will there be a spark? Probably. It is electricity we are dealing with, and the nature of electricity to make a spark when two contacts touch. It is 5 Volts DC. If this becomes too much, let's skip it, and go on to the next test. It also will show whether the problem is the Power On switch, or Power Supply. It is a NO MISS approach. Power Supply comes on you have a bad Power On switch. Power Supply does not come on, you have a bad Power Supply.
No the wires are 4 wires, two twisted in each group, one white and gray group, and the 2nd group of two wires twisted together as the white/blue. White blue would be on 2 4 and white gray on 6 8. So I will try 6 and 8.
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SOURCE: MS-6378 ver 2 Motherboard fitted to my Time Computer
here it is your manual man
http://asia.msi.com.tw/index.php?func=downloaddetail&type=manual&maincat_no=1&prod_no=283
msi site your board/the manual..youll have there at the beginning the diagram of wires and pins..
I have a MSI too..great boards man..great boards..
fixya:)
bye
SOURCE: connector pulled off power buton wires
Hi ford, the most common case colored wires used for negative - is white. The colors blue, red, green are usually positive +. The internal speaker though it uses a 4 pin connector only plugs onto the 2 end pins. Black is connected to negative - pin & red is connected to + positive pin. (Depending on the MB model).
All these case LED's use 5volts DC. If you make a boo-boo, don't freak out. You can usually shut down the system & turn the connector 180 & re-connect it with out hurting the board. Suggest you connect 1 at a time & check in-between each.
Still having trouble, include the name & model number of the MB.
Good luck!
Mike
SOURCE: Front panel power switch & led'S pinout
asus web site download manual for a p5pe-vm thats all you need
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I have the left side panel removed. That is normal side removed for access to the insides. I also removed the top plastic panel to have access to the power switch. Because it would come on before with similar behavior, it is likely the switch.
However, the switch appears to be somewhat hard to remove. How do I remove that. I removed the DVD writer to have access. How do I remove the W/B and W/G wires from the switch pins. Can not get access to that yet, can only flex up the switch a bit. Are you instead talking about the pins on the connector attached to the motherboard. That connection does not appear to come of easily and I did not want to force. Or are you talking about the wires at the power switch itself. What two pins do you want me to connect.
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