by ktemkin » Jun 14, 2003 @ 4:08am
I bought a desktop brand new from IBM once, and it worked fine the first time I used it but the second time it wouldnt start up and shut off imediately after I turned it on...
... So I took the ram out. With no ram, the computer stayed on just fine, continuously beeping a "No Ram error code". I took a voltmeter and started checking everything, and making sure the connections are secure. I turn it off. I look around, wait untill the next day, and then turn it on again. This time, I took the whole cover off, so the motherboard was completely exposed, and not just the side flip cover.
The first thing I noticed was smoke.
The CPU had set on fire inside of it's IC chip, but because it was contained by rubber, when I turned the machine off, the mini-fire ended. Turns out the machine had a bad cooling system, including a bad heatsink. This was from shipping- I customised the computer, IBM built it for me, and sent it to me- and within 2 days of me recieving it, the machine sets on fire.
I believe the heatsink it had was copper. Since then, I've never used copper heatsinks- I feel that they're good at absorbing heat, but not good at getting the heat away from the processor.