Question about Abit : KV7 Socket A KT600 Motherboard

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Msi kv6 hi there i recently rebuilt my system with a kv6 board unfortunately the board powers up as soon as i input the mains lead into the power supply it does this even without the reset and power sw leads connected to the board , sadly the board does not load the bios either it just keeps clicking and reseting itself without any bios or video output. i placed some insulation under the board between the case and board to stop any shorts there may have been, but however it does the same , i also noticed that the light on the fan flickers brighter and dimmer whilst it is in powered. but to no avail with the system booting it just resets constantly, is my board broke or is there a simple explaination for this problem , i would like advice before i buy another board just in case it could be the power supply. it does fire up the processor runs fan runs but no bois setup loads and no video output either . my board powers up with nothing but initial power supply connected to it please help.

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First, Make sure you by the right motherboard screws to lift the board from the case or youll ground out and blow the power suply or the mainboard or both.

You can buy power supply testers at most computer stores for around 13 to 20 bucks and test the power supply.

The one i use for work tests the power supply and the board and shows the voltage output, it was $16.

If both test good, then try connecting everything first and then connect the power supply. Make sure the Pins for the reset and power swithc are connected correctly.

Do you know the processor to be good?

Also try reseating the RAM in the slots on the mainboard, check that the metal pins for the processor arent bent underneath.

Some boards have the wide connector and the small four pin connector and some only have just the wide one depending on the its power requirments. make sure both are connected if it requires both.

Make sure the BIOS battery isnt dead. its on the Mainboard and looks like a watch battery. Pop it off and stick your tongue on it and see if you taste a charge ( you know, like with the old 9v rectangle batteries when we where kids)

You may just have a bad board or not a power full enough power suply for that board. It could als be that.
s

I would reccomend you get a power supply tester. I have one that was $16 and has both the 20/24 pin and the 4 pin Mobo tester for the power supply and it will test the power supply and the it will test through the mother board to show if its getting a solid 12 volts of power. It also has a floppy and a sata and the 4 pin tester for the drives and Mobo and is worth the money. Heres the one i got at a local ma and pop store in San Antonio Texas. You should be able to buy similar at any tech store. good luck.

msi kv6 - tester%205_small.jpg
P4 Power Connector, Molex Connector, 20 Pin or 24 Pin Power Supply Connector, SATA Connector, Floppy Power Connector

www.allgen.com

Posted on May 29, 2008

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Sounds like to me you mite have either a bad power supply or maybe the mother board isn't the right size for your other componets .............mite try takeing it to a place where they can check it ....... lala linda

Posted on May 28, 2008

Why did you connect the power supply first?? I don't consider that to be a good build advisory unless you were attempting to test cpu fan only!!!!!!!!!!!.
Connect the motherboard with all necessary interface connections before attempting to connect Power Supply. However just for information, did the cpu fan run smoothly or did it herk and **** during these reboots that you mention?
If the system was running fine before the motherboard replacement and the new motherboard is designed to run with your present Power Supply, then best guess without more information is possibly a bad motherboard, it does happen but usually not without external reasons.. More information could be extremely valuable

Posted on May 27, 2008

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SHUTS OFF AS SOON AS YOU SWITCH ON


Possible short in the main board, possible in the display drive power. The set triggers ON but the error makes it trip off due to the fault. So disconnect the main power to the driver IC -and check, make sure that all the leads on the board are having good contact- NO DRY SOLDER.

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The blinking light means the controller QA01 in the AV_TERM system board is booting and driving the TIMER/REC RED LED light accordingly. This failure mode is true for many conditions, not exclusively for the main PS board PE0071. It could be caused by many things, LOW B, SEINE, AV_TERM, LCD, PROTECT, etc.

Specifically for PE0071+12VDC circuit failure, which is the most common , listen for the LINE relays SR80, SR81 coming online. If several (3) or more clicks are present when applying power to the TV set then suspect the +12, 20, +32 VDC inverter is faulty.

As a quick check, you can disconnect P807B. If the relays cycle every 1-2 seconds then is most definitely the +12VDC inverter. Check for voltage level at optocoupler Q881 pin 4 and this should not be cycling. This point is the VCC for the oscillator. Repair or replace board 75002913 as necessary.

TROUBLESHOOTING: (this is my own, not the OEM !, try at your own risk!)

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  2. Check for LINE2 input voltage level at inverter on sheet [3].
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  • P809B (9) ACDETECT = 3.00 VDC (+/-0.2)
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For +12 VDC Inverter, suspect components:

Q880 STR-W6765 PSR (works really hot!!)
C888-C890
D884A and related switching circuit components.

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