There was a *huge* rash of bad caps starting in the early 2000's and running through most of the decade. Word is a company producing the electrolyte ripped off the formula, didn't get it right, and the resulting defective stuff made it into tens of millions of capacitors. I started seeing them on Pentium III motherboards but found them also in countless power supplies used in PCs, hubs, switches, routers, DVD players, flat panel monitors and TVs, you name it. 90% of the dead LCD monitors and TV's I've encountered have had a bunch of bulging capacitors, mostly the output smoothing caps in the power supplies When I see one bad one like that, I replace ALL capacitors in similar applications in the device. They don't have to be an exact value, +100%/-20% with an equal or greater voltage rating is almost always fine. I keep a stock of 470uF and 1,000uF in 25V and find that adequate for most things.