The only computer equipment I have had which failed:
Acorn Electron - bought for Christmas 1985 - the TV modulator came loose about 7 years later. It still ran, just the picture would sometime go - a smack to the side fixed it.
Had about 4 Amiga 1200s (replaced under warranty). First one, the PCMCIA port wouldn't work, and then each of the two replacements had an issue (can't remember them all, but on one, the 'D' key wouldn't work). The last one (which I have had since 1994) still works.
Had two PC motherboards fail in the last year. I think this says something - newest and latest hardware is that which has gone most quickly!