Cap problem or others?

[mig27]

first problem:
I have a gigabyte GA-6BXDS(dual P2 processer) MB which on good condition.One day the MB shutdown by itself and once i reopen back the computer, no POST of that motherboard from that day.I even notice that some of the 330uF 25v cap are different from others.
The cpu caps are all fine.(SANYO)
The 330uF caps is CHOYO brand
Can replacing the 330uF help solve the problem or some part in the motherboard already said bye bye to you?

second problem:
same as above but this time is an old motherboard, asus SP-97V.No caps problem(i don't know as the caps looks fine) but no POST while powering up.
Can replacing the caps help solve the problem or some part in the motherboard already said bye bye to you?

Thanks

[kc8adu]

choyo is a well known crap brand.
are they bulging/leaking?
did you try another psu?

[mig27]

1.some of the caps are bulging(330uF near the bios)

2.try with many working psu but still no POST while powering up.

Thank you for your reply

[willawake]

why dont you post some pics of your board. sounds like the 330 need replacement. strange though the 330 are so small capacitance. you see anything else with problem, looking burnt or abnormal. If nothing else on the board is looking bad there is a good chance you can replace the 330s and have a good board. If you want to replace them make sure you read this board good and if you have any questions we are here to help.

please give more info and pics on your asus SP-97V it is an old board you say. did it fail for you one day or is it something you bought second hand and it doesnt work.

[mig27]

thanks willawake for your reply.

1.If i use digital camera to capture, i think it is hard to see the bad caps but by using hand to feel it, there are some different with others(good one)

2.There are no burning sign on the board, everything is perfect.

3.For the SP-97V, i abandon this board more than 1 year, so i dig it out just to warm up only!BTW no bad caps on the board as the board have less caps on it.

quite weird too!I have 3 board with these symptom
1.Gigabyte GA-6BXDS(P2 400) (suddenly down and never come back)
2.ASUS SP-97V(AMD K6 166) (power up and got nothing)
3.FIC ????(P1 133) (power up and got nothing)

[willawake]

Your gigabyte is a candidate for bad caps (one day the mb shut down and no post) but your other boards I dont know.

For the other boards, the board will not develop a bad cap problem in storage. It has to be turned on to develop this problem. Replace your components one by one using a friend's stuff if neccessary. Find if the problem really is the motherboard.

If the caps are no good, at the top they will be bulged/curved and not flat, they will have a brown discharge in the middle of the top of the cap, they may not be seated flat on the board as the bottom is bulging. Check the pics in this forum to compare to yours.