Question about Matsonic MS8137C Motherboard

1 Answer

Doesn't start. Green LED off. Red light permanently lighted.

When turning power on, all the fans run but nothing happens.
I've cheched 5V and 12V on disk PS connectors.
The green LED is always off and the red one is stucked lighted.
How can I proceed in troubleshooting ?
thanks

Posted by on

  • 1 more comment 
  • sly31 Aug 02, 2008

    Anyway to confirm the PS failure with a multimeter ?

  • sly31 Aug 02, 2008

    Checked all voltages as suggested. All are right....

    've just noticed that grey wire is 2.75 V ???? any meaning ?

    Does all that mean that the PSU is OK and the motherboard has failed ?...or processor ?

  • sly31 Aug 03, 2008

    Thanks to Markk7171 !

    I've replaced the PSU and everything works.

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 221 Answers

First, try replacing the power supply. If this does not work then the motherboard will need to be replaced.

Posted on Aug 02, 2008

  • 1 more comment 
  • Mark Kessler Aug 02, 2008

    You can test the individual wires to see if they are putting out the correct power. Set the multimeter to DC power, up to 20 volts. While the connector is connected to the motherboard, and the computer is turned on, touch the black node to one of the black wires and the red node to each of the colored wires. This may take a bit of working to get the nodes into the back of the connector, an easier way of doing this is to use paper clips and straighten them out. Below is information on what voltage each colored wire should be. The PSU connector you want to check is the one connected to the motherboard.



    Orange = +3.3 V

    Red = +5 V

    Purple = +5 V

    Yellow = +12 V

    Blue = -12 V

    White = -5 V

  • Mark Kessler Aug 02, 2008

    Ah yes, one more color I did not list.



    gray = +5 V



    The gray wire is the power good signal. If you are only getting 2.75 V then you should replace the power supply.

  • Mark Kessler Aug 03, 2008

    Your Welcome

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Rh11@gmail.comdoes not fire up green power light on but cooling fans dont run and multi meter does not register any power through


Remove power supply from PC, connect it to AC power, then connect green wire with any black wire.
If it starts - check 12V AC, 5V AC.
If it doesn't - there are no user serviceable parts inside, just replace power supply

May 19, 2011 | Lite On LiteOn 204Watt PA-4022-6B Power...

1 Answer

Start up light flashes once and it won't power on


Most probable cause is the power supply. Look at the back of the computer, check the voltage settings located near the power cord. This will be the small red tab indicating two different settings, If your in the US it should be set to 115. Also, the power supply should run the internal fan when it is turned on.

To test the power supply try this:

Open your computer case and locate the gray box that is the power supply unit. Trace the wires from the power supply to the boards and devices and disconnect all the cables by unplugging them.

Find the big connector plugged on the the motherboard, make sure it is disconnected and short the two pins: (GREEN & BLACK) Short green pin (14) to GND (any black) to switch power supply ON, disconnect green from GND to switch OFF.

This will switch the power supply, you should hear or see the fan in the power supply spin. If you do not see the fan spinning, and your sure you have shorted the correct wires, you have a faulty power supply. If you see the fan spinning, you can now test the voltage coming out of the power supply.

Place a volt meter on the following colors to test voltage:

The color code for the wires is: Red = +5V, Black = Ground (0V), White = -5V, Yellow = +12V, Blue = -12V, Orange = +3.3V, Purple = +5V Standby (not used), Gray = power is on (output), and Green = Turn DC on (input).

Feb 12, 2011 | HP Pavilion a6110n PC Desktop

1 Answer

Motherboard won't boot: no noise, no nothing...


Shorting the two leads will work but don't keep the two wires together. They are not ment to stay connected. Consider replacing your cases ATX power switch. Take a look at the link provided for a new switch;
http://www.cables4computer.com/Cases_and_Enclosures/Mid-Tower_PC-Cases_ATX_Push_Button_Power_Switch.html

The green LED on the motherboard means the board is in "Stand by mode". This green LED uses 5V DC to light the LED. After replacing your PS back into your system it may function just fine.

Good luck.
Mike




Dec 03, 2009 | Intel Motherboard

1 Answer

Trying to find wich two or more wires from wiring harness turn on power supply for a compaq presario 7594


In ATX PC power supplies, here is the wiring scheme:

Green: PS-ON (+5V)
Gray: PWR OK (+5V)
Purple: +5VSB
Blue: -12V
White: -5V
Orange: +3.3V
Red: +5V
Yellow: +12V
Black: Ground (AKA Common)

Use a paper clip to connect the GREEN wire and a BLACK wire. There should be a black one right next to the green. This is how I test PSUs before and after I repair them. Now it should be running, assuming there are no internal problems.

You can also connect the GRAY to ground with an LED. Not necessary, but I like to do it ;)

Nov 24, 2009 | Computers & Internet

1 Answer

Gateway yellow power button, nothing starts, no fan, nothing. opened up computer and see mobo led light is lit. newton ps has a test button. tried to test with various components plugged in and the test...


Power supply has several voltages. Just because the 5v power is active doesn't mean all the voltages are OK. You need to have the power supply tested for 12v and 3.3v. A quick test is to unplug all the wires from the power supply. There is a single green wire on the motherboard main plug. Connect (use a bent paper clip) that green switch wire and any black wire. Plug in the power supply and it should run (fan starts)

Oct 26, 2009 | Gateway (ATX-300-12EB3) (ATX30012EB3)...

1 Answer

No picture or sound


Does anything start to work? Any of the three fans start to turn, Lamp ignite, etc., when you press the power button or does nothing happen before the Red LED starts blinking. How many times does the RED LED blink?

Jul 25, 2009 | Sony KDS-R60XBR1 60" Projection HDTV

1 Answer

Dell Dimension 8300 wouldn't start


Sounds like a power supply. You are getting the standby voltage and not the switched. plug all your wires in except the big 20 or 24 pin motherboard connector, take a small wire and short the green (PSU_ON) to black (ground) wires. This will simulate the computers "ON" signal. The fans should all spin up and your plugged in accessories should work, which means bad motherboard, if not bad power supply.

Mar 24, 2009 | Dell Dimension 8300 PC Desktop

Not finding what you are looking for?
Matsonic MS8137C Motherboard Logo

Related Topics:

349 people viewed this question

Ask a Question

Usually answered in minutes!

Top Matsonic Computers & Internet Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

David
David

Level 3 Expert

778 Answers

Roshan Rijal
Roshan Rijal

Level 2 Expert

361 Answers

Are you a Matsonic Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...