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On/Off switch will not turn unit on..sunk in

The on/off swith will not work, (sunk down in). I took all the screws out all around botttom of unit. Can't figure out how to take the screen off to get the top screws out to left the top chassis off.......Help

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That unit may have the locks open it by screw driver check the power at cord then insert and check ac voltage at fuse if present then check after fuse if not then replace it then check dc voltage across big capacitor if not then check 4 diodes if faulty replace it if dc volt is very low then replace capacitor problem may solved

Posted on Oct 27, 2008

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Where is the power supply on a pioneer pdp-s41 plasma

Most are located right where the power cord plugs into the tv. In my experience you usually need to remove the decorative bezel around the screen to get to some of the screws to separate the housing. Try using a butter knife and be very gentle.

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If this is in a desktop computer you will unscrew 4 screws on the back of the tower, the screws with be aligned in a rectangular fashion with one off kilter. Then follow all the plug wires coming out of the power supply and unplug them all. All the plugs are keyed and only fit into the right slots the right way. Buy a new PSU from online, bes tbuy or office depot and make sure it has enough of the right plugs. Make note of if your motherboard uses a 4 pin square plug, a 20 or 24 pin motherboard, and how many mux (4 pin rectangle with 2 angled edges) or how man sata has a L shaped connector end you need and get a power supply with all of those connectors.

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How do you print screen?

Hi John,

To print the screen what you see, Press the Print Scn Button on top row of your keyboard.

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Tools required: A screwdriver (Phillips, the X shaped one), something pointy (fingernail, penknife).

Assuming you just want the LCD, not the whole screen assembly plastic and all.
Use the pointy object to pull out the rubber knobs placed around the edges of the panel, revealing the screws.
Use screwdriver to remove screws.
Use pointy object to pry gently between the two halves of the panel, they are snapped in place so do this gently but may require some force. Front half should come off.
Use screwdriver to remove the screws keeping the LCD in the frame.
Lift the LCD out of the frame by its edges, do this gently, they are fragile especially where the label reads on the top half 'DO NOT TOUCH THIS'.

Voila, but be careful.

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Last night I heard a loud pop sound come from my computer and then it shut down. I tried to start up the computer but it didn't turn on. None of the fans turned on either so I concluded something is wrong...

Yes, and the power supply needs replacing.
4 screws hold the power supply to the cabinet or case these are usually located outside visible at the fan vents at the four corners.

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How to repair/replace dc input jack for westinghouse nb-14w2 ?

Even if either of you have given up on this, I'll lend a hand to anyone else who may have this problem in the future. Okay, most of the visible screws on the outside of the case, you'll be presented with a few problems; some plastic clips along the perimeter of the case, a few ribbon cables, and some hidden screws.

First, the ribbon cables; you'll want to pop the keyboard off, which you do that by depressing a row of four small tabs along the top edge of the keyboard. Then you'll have to unplug the keyboard by pulling the two tabs on the sides of the big ribbon cable left (towards the CD drive) and carefully pulling the ribbon cable out. Now there will be a smaller ribbon cable for the touchpad; the connector on that one you have to gently pry the white tabs up and slide the cable out.

Now, you'll have to flip the case over, and get into the hard drive compartment. that should be easy enough to open up; it's under the larger plastic panel on the case, held in by 8 screws. In there you'll see the hard drive, wifi, processor, cooling fan and heatsink (usually an orange-copper color.) Ignore all but the fan and the heatsink. On the fan, there will be two screws, one on the lower left (by the battery compartment) and one on the upper right, by the processor. Unscrew them, but leave the fan connected by its wires for the moment. Then there will be three screws on the heatsink in a y-shaped bracket around the processor. unscrew oi, and remove it. There will only be a small screw connected to a black grounding wire in the corner of the board under where the heatsink was, unscrew it, and pull it out. Now you'll be able to pop the silver plastic top face off by pressing those little plastic clips along the outside of the case.

In the upper left corner by where the DC jack is, you'll see the circuit board that it's on. Just unscrew the 4-5 screw that are on it, gently remove the ribbon cable from its connector (just like the keyboard), and the power cable (brown connector on board, white on wire, red and black wires connected to the white connector.)

From there it's just a matter of figuring out whether you can salvage the old power jack or replace it with a new one.

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350w switching power suply

at first chack at which time it shutting down. if it happen when u click on any drive or when u using cd/dvd drive then power supply cant regulate power. then chack switching transistor and filter section capacitor.
(Be careful about filter capacitor in primary section because some time it stored high voltage dc after plug of power supply at first discharge this two capacitor.)
** also chack supply voltage r stady or not.

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Computer powered down while in use.

Your power supply may have failed. Such failure is common, especially with the low quality supplies used in some machines these days. Sometimes this is due to the failure of the fan inside the supply, which causes overheating, and eventual component failure (especially of the electrolytic capacitors). If you have a voltmeter available, you can check for the presence of voltages on the cabling which connects to the computer motherboard, drives etc.

Google for the proper pinout specifications- the cabling has colored wiring.

Have the computer plugged in- first check for the standby voltage- a +5 volt line which powers a small circuit on the motherboard. If this is missing, your machine will not power up at all. If present, then press the ON button, and check for voltages on the red and yellow wires. On the red +5 volts, yellow +12. These should be very close to those exact readings. If more than a few tenths of a volt off (esp. the +5), then the supply is bad also.

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Computer wont turn on

So, lets say that you have double checked all cables, and everything is plugged in properly. When you hit the power switch on the case, do you hear the computer start then shut down several seconds later? Does the computer refuse to do anything but power a motherboard LED? Also, did the computer (or the person carrying the computer) bump into anything while moving it? The most minor bump can cause many problems.

I would try replacing the power supply with another one from a working PC, but just to make sure that the power supply unit is the problem. If it isn't, make sure all heatsinks are locked down appropriately and making full contact. Other than that, I don't know what you can do.

Dec 30, 2007 | Computers & Internet

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