Reply 40 of 44, by techgeek
Deunan wrote on 2021-04-24, 20:23:OL? You mean close to zero ohms I guess?
I have yet to see a shorted tantalum cap that would not burst into flames when power is applied. You really can't miss that. PSU might shut down instead if the short is on -12V line but the +12V line has more than enough amp rating to just feed the fire and not care. And obviously that should be indicated by the POST card LEDs, that one rail is missing due to short. On the other hand, if the cap went open, it would not prevent the mobo from booting. It's just a 10uF and there's plenty of other local bypass caps to make up for that.
OL comes from OverLoad, which means that the capacitance is either too high or the capacitor has shorted. Contrary to popular beliefs, the tantalum capacitors burst into flame only rarely. They often fail without any signs of damage (http://minuszerodegrees.net/failure/failure.htm).