Question about E-Machines T5048 (7136) PC Desktop

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Power does not come on! Had service done and now I believe the motherboard is not wired correctly. Don't know what to do, any help would be great. E-Machine / T5048

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Maybe power supply bad or power button

Posted on Oct 08, 2009

  • David Sharp Oct 08, 2009

    maybe power supply bad or power button



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I have a 90 Buick Regal Custom 3.1L V6. I just changed the spark plugs and wires because the car was running crappy. Got the wires mixed up and blew a plug so fixed that and now the Service Engine Soon...

I don't understand "..blew a plug...". getting the firing order off should not have any ill effects on a plug. It will cause the engine to run very bad if at all (like it has a real bad miss depending on number of cylinders and how many plug wires are off).
What did the "blown" plug look like?

It may also help greatly to try and retrieve any codes that may be stored in the ECM. (The service engine soon light tells you there is a problem and codes should be present)

You can insert a paper clip into the ALDL connector that should be located at the bottom of the dash on the drivers side, to jumper the A and B terminals (usually a black and a black with white stripe wires)
Turn the key to ON (do not start)
Count the flashes of the service engine light.
If done correctly you should at least get a code 12 at first.
(code 12 will be one flash, short pause, two flashes, long pause, one flash, short pause, two flashes, long pause....)
Each code will flash 3 times before moving onto the next code.

Get the codes and respond back here and I can try to help further. Also let me know what this "Blown" plug looked like.
(I do believe you can insert pictures here. I have not yet done it but I see where it can be done at the bottom of this comment box)

Sep 11, 2011 | 1990 Buick Regal

1 Answer

Front panel header pin connections how to put the pin in the right place because i put my motherboard in a differen case can u send be a picture so i can know how to do it sony rx660

Don't quote me on this pinout ladydj11, but I believe this is correct;

The Front panel header is located parallel to the Bottom Right edge of the motherboard.
(Motherboard orientation; Processor to the top, Ram Memory slots to the right, PCI slots to the bottom)

There are two rows of 10 pins laid out horizontally. (20 pins total)

I will number the pins for easier orientation.

Starting from the Left side of the motherboard going towards the Right, across the Top;

Pins 1, 3, 5,. 7, 9, 11, 13, 15, 17, and 19.

Starting from the Left side of the motherboard going towards the Right, across the Bottom;

Pins 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20.

A) Pins 1 and 5 are for the Power On LED light.
(Pins 1, 3, and 5 would be used for a dual color Power On LED light. Pins 1 and 3 are for the Positive { + } wire)

B) Pins 7 and 9 are for a Keyboard Lock. Believe the pins are left unconnected for an unlock status.

[ May be the other way around. The two pins may be have to be connected, in order to complete a circuit which allows power to go through the Keylock switch, when it is in the locked position ]

C) Pins 13, 15, 17, and 19 are for an internal speaker. Used for BIOS Beep Codes.

D) Pins 12 and 14 are for the Power On switch

E) Pins 16 and 18 are for a Reset switch, IF used.


Jul 11, 2011 | Sony VAIO Digital Studio PCV-RX660 PC...

1 Answer

I have an Acer M5100 desktop pc. AMD Phenom quad-core 2.2Ghz, 3 Gb of DDR2 ram, Nvidia 8800GT 512 MB video card. I properly shut down my pc last night, when I woke up it would not turn on. Nothing happens...

You have done all the correct things. If you just power uo the switch mode power supply without any load it may not turn on properly. Just connect a few devices such as the hard disk, floppy, DVD/CD drives and external fan to the power supply don't connect the data cables to the drives and power up the power supply by using a paper clip across the green and black connector (this switches the power supply on like pressing the power switch on the front panel). Then use a multi-meter and measure the voltage on a 4 wire power connector - 12Volts on the yellow and black, 5volts on the red and black wires.
If you don't get the correct voltage on these wires then the switch mode power supply is faulty.
You can test the other voltages on the 20pin and 24pin connector that a\connects on the motherboard.

Check out this WEB site for the voltages of each pin on the 20 and 24 pin connector.
NOTE - If you have a 20 pin connector then ignore pins 21 to 24 on the diagram. Pins 1 to 20 are common on both 20 and 24 pin connectors on the older and newer switch mode power supplies.

Apr 23, 2011 | Acer Aspire M5100 AM5100-U5313A AMD...

1 Answer

Unable to connect HDD LED, Power LED, RESET SW and power SW jumpers to motherboard in correct position. Unable to find a manual for layout. Any help will be greatly appreciated.

If you look closely on the motherboard, and not necessarily near the jacks or pins, you will find a wiring table that corresponds to the pin configurations.

Dec 21, 2010 | EliteGroup GeForce 6100SM-M Motherboard

2 Answers

Need help wiring Intel Desktop Board D915PGN motherboard

Here you go. Address this manual for your system board from Intel's site, checking and double checking your connections.

Most commonly it is a disconnected CPU Fan or Chassis fan.

Let us know if you need more assistance, we shall continue to help you troubleshoot.

Apr 17, 2009 | Intel Desktop Board D915PGN - Motherboard...

2 Answers

EMachine no power

Ok for a start the power switch is not green and white that is the power led, you need to look for a red and black wire normally marked on the connector and motherboard as pwrsw or pswitch.
if you believe it to be the switch unplug the connector and jump the connection on the motherboard using the reset switch or a jumper, or not recommended but have done this myself many times using a flat blade screw driver very carefully and touch the 2 pins to complete the circuit.
if it doesnt power on then its more than likely it is the power supply but the motherboard being faulty could also cause this to happen.
the problem i have found with emachines is that its difficult to get replacement power supplys

Nov 30, 2007 | E-Machines eMachines Desktop PC

1 Answer

Power button wiring help

Hello Chub, Your motherboard manual can be downloaded at this link: If you go to page 2-31 in the above manual the diagram should show you exactly where your front panel power switch connects to your motherboard. You want to connect it to the position marked below as ?ATX Power Switch?. Let us know if you have any other questions and please don?t forget to rate the posting.

Jan 15, 2007 | ASUS A8V Deluxe Motherboard

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