On Wed 14 Feb 2007 14:36:18 NZDT +1300, Andrew Errington wrote: > A working machine, let's call it machine A, with a noisy CPU fan. A new > 120mm fan with lower speed and giant heatsink is purchased and fitted. > Machine A no longer works. =:^(
Ooops, you broke it. Not good news. Electrostatic damage? Did you refit all the cards, ram modules, etc properly? > Suspecting the motherboad, a new socket 939 motherboard is purchased, Well could have been the CPU, memory, ... > together with a new case and PSU. Let's call this machine B. > Unfortunately, after installing RAM and CPU from machine A the new machine > appears to also not work. I can see the ram as common factor here. Sure the cables are all working fine? > Specifically, the 'standby' LED on the mobo > lights up, but pressing the power switch will not power up the mobo. Does it beep? My experience is that mobos at most beep if they don't find any ram. > Suspecting the CPU (Athlon 3200+) a new CPU is purchased. You can see > where I'm going with this... 2 computers? ;) > necessarily, with a supply of surplus but known-good parts to swap in and > out to try and determine which parts of machine A and B are still good, and > which parts are dead. I suspect not many people have a pile of spare semi-new parts unused in the drawer. > For extra points a root cause (actual, or highly > probable) would be good. Electrostatic damage. Mechanical damage to the mobo. Bad solder joint, which worked until in use in heat for some time and then being bent a bit (you can't do any hardware work without putting mechanical stress on components when plugging). Put the CPU into the wrong holes of the socket. Does the BIOS shut down the CPU when it detects fan absence? Does the fan detection work? ... Volker -- Volker Kuhlmann is list0570 with the domain in header http://volker.dnsalias.net/ Please do not CC list postings to me.
