Where do I start?
I've misaligned a floppy power connector in my tower; the cable melted with a cloud of disgusting smelling smoke. Everything (except the melted cable, of course!) worked fine once connected properly!
I have also - stupidly - put an 8mb expansion board into the A1200 slot *the wrong way around*... how I managed to get it to stay there I'll never know (brute force, probably) - but it made a funny noise when I switched it on (and off again very quickly)... but the memory card never worked again.
I've connected things to the 2.5" IDE header incorrectly a few times; never any damage, though - touch wood.
What else? Tripped over joystick leads, tugging the plug out of the socket? Again, never any damage fortunately.
My 1942 monitor died for no apparent reason, as did my A2000 (looks like a diode on the mobo burned out) :-( I don't think that either of those were my fault, although I'd just been cleaning all the dust out of the A2000...
I seem to recall destroying an A1200 mobo (accidentally, of course) - can't remember if it shorted against something in the tower, or whether one of the many socket-over-a-chip bolt-on bits wasn't connected properly...
The best one was once after totally rebuilding everything into the tower and connecting it all up, I switched on and nothing happened. Bam - turn off; panicky check to see if anything had melted. Nope. Checked all the connecters - OK. Turned on again... nothing... hmmm...
My heart was in my mouth thinking that I'd destroyed everything, when I realised that I hadn't connected the PSU to the wall socket - DOH! :-) :lol: :lol: