I used to work at a computer repair shop, i was one of the guys who repaird powersupplies and monitors. One time i got this monitor in which had a pcb burnt to a char in one place, the owner told me they had a water leak, which dripped into the monitor and it caught fire. The pcb was designed so that in highvoltage areas thre were slits cut into the fiberboard, so if heat go to a high enough level, it would simple burn out. Didnt work in this case. Which is wierd because on that monitor, most shorts or overdrains would pop the fuse...