MSI G31M3-L Recap (MS-7529)

[lbwlow]

I got this board (MSI G31M3-L) for free from a friend of my, it was pulled out from one of his client PC and it has a total of 8 bulged capacitors on it. This board uses 9 TK 6.3V 1000uf caps, 8 out of 9 of them was budged. I have no idea how old was the board since it was pulled out from others people's PC. When I tested it, it refuses to turn on normally, when I short the power pin, it just on-off-on-off repeatedly. Or it will just power on for 1 sec every time I short the power pin. After I recap the motherboard myself, it was working fine again, installed and run windows 7 on it without any prob. Since 1 out of the 9 TK caps from this board looks fine with no bulging or leaks, so I decided to leave it there, wondering would it failed in the future?


The caps circled in yellow are the location of the bad cap (Which i have replaced)
The one circled in red is the unaffected TK caps




The caps I use to replace those bad caps

[c_hegge]

Re: MSI G31M3-L Recap (MS-7529)

That one you left there is probably bad, but not visibly showing it (and if not it will fail very soon). You should also replace the blue ones under the CPU heatsink as they usually fail on these motherboards too. I usually use 560uF 4V Polymer caps under there.

Were your replacement caps HM series? I can't tell from your picture

[lbwlow]

Re: MSI G31M3-L Recap (MS-7529)

That one you left there is probably bad, but not visibly showing it (and if not it will fail very soon). You should also replace the blue ones under the CPU heatsink as they usually fail on these motherboards too. I usually use 560uF 4V Polymer caps under there.

Were your replacement caps HM series? I can't tell from your picture

That is what I am guessing, I already standby some caps just in case it blows.
Thanks for the tips on those blue caps under the heatsink.

Yup, my replacement are HM(M) series

[c_hegge]

Re: MSI G31M3-L Recap (MS-7529)

Cool. HM is what I would recommend to replace them.

[mikail13]

Re: MSI G31M3-L Recap (MS-7529)

if you couldn't get result with changing capacitor you must rewrite the bios chip.

This board and msi g31m3 -l v2 needs bios rewrite for resurrection.

i did 9 boards.

[mikail13]

Re: MSI G31M3-L Recap (MS-7529)

My g31m3 works properly but sometimes it don't see usb Hdd and rams were always overheated.
today i desolder 7 OST caps near the cpu.
there is no visible faulty i.e . blown ,eruption
they must be 680 mF but all of are 54 mF.

there are 1000 mF TK caps below the CPU and near the ram slot.
also there is no visible faulty .measure on board and i realise something abnormal for another new board. onboard 0.145 mF..must be 3500 or 5000mF

Desolder and measure them. they have over value. one is 2400 mF other 2800mF.
default is 1000mF.