Up until the last few months, the only failed hardware I've encountered was an old 1802D monitor (worked about a month). I'm generally very careful with computer equipment, my original C64, C128, A500, etc all work and look like new. There's even an ancient 8088 in the garage... with a still-working (amazingly) Seagate.
In the last months however, I've had three issues:
1 -- fuXored an A1200 motherboard (my fault), easily fixed though and works fine now
2 -- Blew the Apollo 1260 card I just acquired (still not certain whether the PSU failed, or if I inadvertantly had something to do with it)... man did that suck. PG is amazing though, replaced six chips total (including some TINY ICs, which the soldering is absolutely perfect) and it now lives. Hopefully I'll get some time to play with that again soon..
3 -- Failing network card causing random BSODs on the PC... that one took a little time to figure out, since the card worked flawlessly aside from causing the BSODs.
I'm beyond careful now, and don't automatically assume that I'm "above" breaking something. I'd always wondered to myself "how the hell does someone ruin a piece of computer hardware?" until I (oh {bleep}!) did it myself... LOL.