Question about MSI K8MM-V Motherboard

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Blinking Power LED ... no other action

I received a replacement motherboard from MSI itself this board dosent start at all ... only the Power LED (Green Light in the front) keeps blinking ... i have tried removing / replacing all the following connections : - CPU - Front Panel Jumpers - Front Panel USB Jumpers - Power / HDD Connections Any solutions ???

Posted by Chintan Nanavati on

  • Chintan Nanavati Jan 08, 2007

    tomj23

    thx for the info ... i have already tried all the steps mentioned above ...

    the board i m referring 2 is a replacement given by MSI service center itself !

    this is cause my board had developed a problem of restarting every 5 mins ... donno y

    this board i have tried all the steps mentioned above in 3 separate places !! still there is no sign of life in it .. guess i was just handed a dead board :(

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Anonymous

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Hi switchblade, Some of this will seem basic or even a rehash of what you?ve already done but please keep an open mind. The one thing I?ve learned over the years is never assume anything especially when things aren?t working like they?re supposed to. -The first thing I would do is to check each screw, card, connector and component you installed to make sure nothings being shorted out or is improperly connected. Common occurrences are screws touching capacitor or other component leads. -Check the power connectors to make sure everything is connected correctly and that all the contacts are still mounted in the plastic connector correctly. -Check the output on your power supply and verify it?s rated for your motherboard. It?s possible that whatever caused them to replace the motherboard could have been caused by a defective power supply or vice versa. -Make sure the motherboard is correctly grounded to the chassis per your instructions. Typically the mounting screws touch a grounding plane on the motherboard and in turn ground that to the chassis. If your using plastic mounting studs that might be a problem. -Verify the power switch is working correctly. -Make this as basic a machine as possible: remove and add in cards (except primary video card), remove all USB components, reduce the size of your memory (RAM) and if you have multiple hard drives remove all except your boot drive. -Try a more basic known good video card, a PCI if you have one. -Again whatever problem caused MSI to warranty replace your motherboard could have damaged your processor or memory. I would have expected a beep code but if you?ve gotten this far without resolving your problem we?re running out of possibilities. -If nothing changes can you tell us some more about the status of the computer or what led up to this? Did you just build it; just install a new part, power problems, anything? Let us know what you turn up and please don?t forget to rate the posting.

Posted on Jan 08, 2007

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2 Answers

Front panel connections


I don't find the Front Panel header pinout online, nor do I have an MSI MS-5191 in the shop.

I would suggest using one the LED lights with two wires.
(3-wire is a dual color LED)

There are two rows of pins. Usually the Power On switch, Power On LED, and Speaker; are on the same row.
HarDDrive activity LED, and Reset Switch are on the opposite row.

Speaker has 4-pins designated for it. All the others use 2-pins.
(Unless the PWR ON LED is a dual color jobbie)

Touch two pins next to each other, in the same row; with the 2-wire LED.
Start with finding the Power On switch first.

Usually the top row 1st two pins are Power On LED (Light)
Next in line are the 2 pins for the Power On switch.
Bottom row 1st two pins are usually HarDDrive activity LED (light)
Next 2-pins are usually Reset switch.

May not apply to a motherboard old enough to use a Socket 7 processor socket.
There may be 18 to 20-pins.
Bear in mind that many are not used, and probably 4 are for an internal speaker, for hearing BIOS Beep Codes.
May be two separate Front Panel headers.

Once you find the two contact pins in the Front Panel header, for the Power On switch; I would put the Power On switch wires on.
The small pin connector on the wire/s, will keep you from accidentally touching these two pins again, when the computer is on.

Now you have the two pins for the Power On switch, and the computer is running; then keep touching 2-pins at a time with the LED. (Light Emitting Diode)

LED stays on? You have the Power On LED (Light) pins.
LED blinks? HarDDrive activity LED (light) pins.
Computer restarts? Reset switch pins.

Look for abbreviations near the pins in the Front panel header.

PWR, Pwr, Pwr On, Sw, and SW; are just some of the abbreviations for the Power On switch.

HDD LED, and HDD are two for the HarDDrive activity LED. (Light)
(If it states HDD SW it is the Power On switch. Weird old way of marking)

RST, Reset, and RSW, are for the Reset Switch.
(Reset Button)

If you see 4 pins marked with a bracket ( [ -> Turn so it's horizontal), these are for the internal speaker.

Type MSI front panel connector in your search bar, and look at -> images. See if you can find an image of your MSI Front Panel header pinout.

You can bet MSI carried out that Front Panel header pinout, on other MSI motherboards, besides the MS-5191.

The MSI MS-5191 may have been a motherboard made by MSI, especially for a pre-built computer manufacturer, and not listed on their website as an OEM motherboard.
(Original Equipment Manufacturer)

Won't have the Front Panel header pinout, listed on MSI's support website. (Doesn't)
But you can bet there IS an OEM motherboard made by MSI, that the Front Panel header DOES match.

May be different expansion slots, or motherboard chipset, or whatever; but the same Front Panel header pinout.

Regards,
joecoolvette

Jan 05, 2013 | AMD MicroStar MS-5191 Socket 7 mATX...

2 Answers

I cant. connect the pin connector in motherboard


Get the manual for your machine here: http://www.iusermanual.com/get.php?t=MSI%20PM8M-V%20Manual&url=aHR0cDovL2Rvd25sb2FkMi5tc2kuY29tL2ZpbGVzL2Rvd25sb2Fkcy9tbnVfZXhlL003MTA0djEuMC56aXA%3D

Apr 26, 2011 | MSI PM8M-V Motherboard

2 Answers

I am looking for the mother board connection diagram so i can connect the towers front panal ie power switch /reset ect


Connect the front panel leads to the motherboard connector marked "JFP1" using the following pins as indicated by the markings on the motherboard and the front panel leads: HDD LED on Pins 1 and 3; power LED on Pins 2 and 4; reset switch on Pins 5 and 7; and the power switch on Pins 6 and 8.


Good luck.

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2 Answers

Need wiring diagram for ms-7142 motherboard... fixing a friend's computer, but they unplugged the wires that run to the front... therefore the power and LEDs don't work...


The connector bus where the front wire connections go, is usually marked. It's usually two rows of pins sticking up. You should be able to determine where the power wires connect. One pin will say PWR. The second pin you need is either next to, or across from that pin. The LED pins are labled too. Keep in mind that LED's have polarity. That is, a diode [light emitting DIODE- LED] only works one way. It's a one way "Valve" for electricity. So if you determine which two pins are for the power light and you connect them, it still may not work. Just reverse the two wires to the two pins and it should work.
I can't imagine that the MSI web site doesn't have the pinout for this board. It would be worth a look if you're not sure of what I'm saying here.

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2 Answers

Power switch,reset switch,power led connections to motherboard?


Hi ramjet007;

This is strange because MSI doesn't have information on the 7548, since it was made directly for HP. Here is a diagram of another MSI similiar and usually they have their pins on their jumpers pretty much the same. You would use JFP1, And Pin's 1&3 would be the hard drive, 2 & 4 would be the LED, 6 & 8 would be the power switch, and 5&7 would be the reset switch. I know your motherboard is setup differnently, but your JFP1 should be in the right hand corner all by itself.





Front Panel Connectors: JFP1 & JFP2
0d87125.jpg




Good Luck and don't forget to leave a rating.

Thanks Mark











Apr 25, 2009 | Computers & Internet

2 Answers

Lost in the wiring :(


Hi bossman9628A, normally its the wire colors that messes everyone up when trying to connect the front case wires to the motherboard. The MSI RX480 Neo2-F, AKA MS-7151 MB is no different but does use a second set of pins just to help you get more confused.
Gather up all your case wires. You'll notice there is one color that is common. Chances are that color is white & is being used for the ground wire. Other colors like blue, green, red, light blue, light green & light red ECT are used for positive. The speaker uses black for ground/negative.
So looking at JFP1 at pin 1 is positive +. Pin 3, which is to the right of pin 1 is negative -.
The manual does show you which pin is negative & which is positive. Pin 1 = (HD_LED_P). The _P stands for positive.
Pin 3 = (HD_LED_N). The _N stands for negative. Do not connect the Power led at JFP2. Keep the power led connected at JFP1.
Do connect the case speaker at JFP2. Most cases do use 2-pin connectors but others use 3 & 4 pin connectors. If your case is such you can remove a wire from a connector by using a decent needle. There is a small black tab that you can pull towards your self while pulling the wire out. You can than slide the wire back into the connector where you need it. You'll know the wire is inserted correctly because you'll hear or feel it snap into the connector. If by sme chance you get a led backwards, don't freak out. The leds use 5v DC. Just shut down the system & turn that led 180deg & reconnect it.

Good luck bossman9628A!
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Mike
please vote....

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As far as I can tell, from the motherboard manual, there is no power on LED display on the motherboard itself.

Why do you think the motherboard may be blown? Maybe we can fix this problem...?

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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

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