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Pc power "button" assembly?

My pc's power button came apart when i took the front panel off. there are two wires (one white and one black), two very small copper strips that are bent at a 90 degree angle, two chips, and of course the button housing. i need to know how i'm suppossed to put this damn thing back together? someone please help!!!

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Need to know the wiring schematic for a 921.166400 switch. Where does green, black and white go after I took it apart?

The green is a ground wire. The black is the hot (120Vsupply) and the white is the neutral.

Jan 20, 2015 | Air Tools & Compressors

1 Answer

Power button

there is a set of wires which connects the pc casings to the motherboard, responsible for all the buttons and indicators in the casing and front panel. check if you able to reconnect it, if you did, check if you did it right. this is not same in all pc but most likely similar

Feb 28, 2014 | Dell Dimension C521 PC Desktop

1 Answer

I have purchased a Thermaltake V3 black case and am trying to install my M2N68-LA motherboard. The motherboard has a combined 9 pin header for power switch, power l.e.d. and hdd l.e.d. which was one plug...

1) The 9-pin header you are referring to, is the Front Panel header.

(Processor to the top, Ram Memory slots to the right, the Front Panel header is at the bottom right corner on the motherboard)

The plastic piece on the front of your computer is the Front Panel.
(Sometimes referred to as a Bezel)

Make a drawing, and notes as to where the individual wires go from that Front Panel header plug, (One-piece plug), to the Front Panel.

Follow the wires from the plug to the Front Panel.

Mark down where Each wire goes.

You may have to take components off of the Front Panel, in order to see exactly where Each wire goes.

For example:
You may have to remove the Power On button/switch assembly from the Front Panel.

It may have the Power On LED light, Power On button, (Switch), and perhaps the HarDDrive LED activity light, in this assembly.

The wires are color coded.

Generally, but not always, when two wires are used in conjunction with each other, (Example, Power On switch, or Power On LED light), the wires will be twisted together.

One wires insulation may be of a solid color, and the other wire may be white, with a stripe in the color of the solid wire.

Example: Wire with Red color, and wire twisted with it may be White, with a Red stripe.

See if these two wires go to the Power On switch.
End of example.

Follow each twisted pair of wires back down to the Front Panel header plug.
(One-piece plug)

See which socket holes the individual wires go to.
Mark it down in your drawing, and notes.

Mark where the individual socket holes plug onto each pin, in that Front Panel header. (9-pin header)

When you are finished, you will have a pinout for the Front Panel header on the Asus M2N68-LA motherboard, and will know where the individual wires go from your ThermalTake V3 computer case.

For the LED lights there is a Positive pin, ( + ), and a Ground pin. (Power On LED, and Harddrive activity LED, for example)

(Ground. Also referred to as the Negative pin. ( - )
This is DC Voltage)

If you have the polarity backwards, (Positive wire of the LED light is going to the Ground pin, Ground wire of the LED light is going to the Positive pin), the LED light will be dim.

(When operating)
Switch the wires around.

If you have questions, or need clarification of what I have stated above, simply state in a Comment.
(Believe upper right of your page)

Jul 01, 2010 | ASUS Computers & Internet

1 Answer

Im not sure how to wire the front buttons to the motherboard.

normally the wires black connectors are marked with white text like PWR SW and PWR LED and stuff and the colors of the wires normally correspondes to the color on the motherboard.....ill look it up and see what i can do for you!

Aug 13, 2009 | Intel Desktop Board D845GERG2 Motherboard

2 Answers


check on the motherboard there should be a small prints on it near control panel.

Mar 05, 2009 | E-Machines eMachines T3830 PC Desktop

1 Answer

Tried to install some RAM, now my computer won't turn on!

Sounds like you detached the power button lead for the front panel from the motherboard

Jan 10, 2009 | Acer Aspire L100 PC Desktop

2 Answers

Won't Turn On

Mine was a simple fix. Hope yours is too.

You need to take the unit apart to get to the cord reel. If you don't know how to take your unit apart, here are some instructions on how to take apart most of the Miele canister units.

Once it is apart, you will need to take out the cord reel. There is a small rubber hose which needs to be removed on the outermost part of the reel. Then there is one small silver screw that you must remove as well. One these two items have been removed, carefully lift the entire cord reel assembly upwards. When you are doing this, ensure that you are also lifting the black and white wiring along with the reel - just make sure that you're not yanking it and possibly breaking the connectors off. As you lift the entire reel assembly out, you can also remove the white wiring harness which connects to the main switches on the vacuum.

Now, here is the trickiest part - not really that tricky if you are good with your hands.

First, make sure that the cord is retracted fully. Then, start pulling the white plastic cord reel away from the black plastic assembly about 1 inch or so. Between the black assembly and the white reel, you'll notice a copper-like metal spring which is attached to the white reel. Make sure that as you are removing the white reel further, that you are maintaining visibility with the copper-like spring. DO NOT LET THE SPRING OUT OF ITS OWN WHITE REEL (the spring has its own reel which is difficult to wind up again, so be very careful!).

Make sure that the spring is fully retracted at this time. If it is not, wind the reel so that the spring is not wound up anymore around the white reel. Carefully slip the spring out of the white reel and leave the spring as-is ensuring that it does not unwind itself out of its own reel.

Now that you have the white reel off the black assembly, inspect the inside of the inner part of the white reel. You'll see two copper rings with 'wings' on them. These wings transfer power to the vacuum. There may be some grease (black) which you should wipe off with a paper towel. Also wipe the metal rings on the black assembly which touch these 'wings'. (the wings touch the metal rings to send constant power to the motor. The wings are there so that as you wind and unwind the power cord from the vacuum, there is always constant contact with the metal rings on the black assembly.

Now, carefully pull the wings up and out. If you can picture it in your head, what you're doing is ensuring that there is a good contact between the copper wings and the metal rings on the black assembly. Do this for all 4 wings on both the inner and outer copper rings within the white reel. Make sure that the 4 pads are clean and grease/dirt free.

Once you've done this, it's time to put the white reel back on the black assembly. Do everything you did earlier, but in reverse.

Carefully take the copper spring and align it to the white reel - you'll see a specific slot where the spring slides and grabs onto on the white reel. You'll probably have to place the white reel slightly onto the black assembly rod in order to achieve this - again, you must be good with your hands to do this without breaking anything.

Once the copper spring is attached to the white reel, press the rest of the white reel onto the black assembly. HINT: turn the white reel slightly so that you're applying some tension on the spring - this will make sure that the spring doesn't fall out of the white reel.

Reassemble the cord reel assembly (black and white parts) back into the vacuum. Make sure that the black and white power cables are out of the way. Once seated, wrap the black and white cables around the assembly and reseat the white wiring harness. Reapply the black rubber tube to the cord reel assembly and replace the silver screw to hold the entire harness down.

Close the vacuum casing, replace the control panel (power and cord buttons). Close the unit, plug it in, and power it on!

If it worked for you, congrats! If it didn't, sorry, you've got a much bigger problem with your unit.

Dec 23, 2007 | Miele S514 Solaris Turbo Plus Vacuum

1 Answer

Front panel wiring

Hi, Maybe we can wing it if you can send an image of the motherboard closeup on the F_PANEL connections and the wires from the front panel itself, or get the specific motherboard model during POST so we can try getting URL of manual. In some instances, the front panel wires are: Green wire, power on green light +, white wire is power on green light -; Red & Black, speaker; Red & white - HDD red activity light indicator where red is HDD + & white is HDD -; Orange & white - Reset Black & White - power on Post back so we can figure things out. Good luck and kind regards.

Aug 23, 2007 | Micro Electronics PowerSpec 8250 PC...

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