Last time this computer was powered up it had no problems. Today I attempted to fire it up and got no video at all. Having removed the MB, there are 12 caps (electrolytic) with swollen tops. 5 of them to the point of a small bit of leakage at the tops. I'm wondering why these caps went bad. Were they bad last time I used the computer and I got lucky it worked? Or have they gone bad from sitting all this time with no power?
All but two are odd values - 820µF @ 6.3V (9 count). The two are 1500µF @ 6.3V. I happen to have some 1500µF's @ 10V (Low ESR) but don't have any 820µF's. So I'll be ordering some. The 10V cap is larger than the 6.3V caps, so I'll probably be ordering some of those as well.
Do caps go bad just sitting around? My thought is they shouldn't.
I'm guessing I probably should go ahead and change all the caps because others, though not showing any signs of trouble may be at the precipice.
All but two are odd values - 820µF @ 6.3V (9 count). The two are 1500µF @ 6.3V. I happen to have some 1500µF's @ 10V (Low ESR) but don't have any 820µF's. So I'll be ordering some. The 10V cap is larger than the 6.3V caps, so I'll probably be ordering some of those as well.
Do caps go bad just sitting around? My thought is they shouldn't.
I'm guessing I probably should go ahead and change all the caps because others, though not showing any signs of trouble may be at the precipice.