wierd sounding eletrical/zaping noise

B

bobstone

Limp Gawd
Joined
Aug 3, 2005
Messages
361
it is hard to discribe but kinda like a zaping sound or eletrical discharge draged out ( maby pssst like sound), seems to come from the cpu area, the computer will boot up and then after it runs for a while it starts to make this noise on and off then it instantly shuts down after making the noise for a few moments ( around 30 secs to 2 min ). it will not turn on again inless I let it sit for a few mins,

if I turn it on again as soon as I am able to it will happen really quickly, like just enugh time for it to post then shutdown. if I leave it off for 20 mins then turn it on it lasts longer ( seems heat realated ).

I have unpluged all the hd's and cd drives and removed all the cards and ram and it didnt seem crash, however I think I heard is sound a couple of times still ( with everthing removed the fan defualts to max speed which is reallly loud ).

however I do not think it is thoes items still cause the noise was vary clearly comming from the cpu area, there is no burnt smell and none of the caps seemed pop'd and no chips cracked / burnt, I also removed the cpu and exanimed it but nothing visualy wrong with any of it.

I have tried a diffrent fan and psu but same thing.

can any one recommend what this might be ?

Thanks
Bob
 
Do you have any way of checking your temps? Sounds sort of like there may be a fit problem between the cpu and the socket. What type of hsf are you using?
 
stock hsf, if i boot in to bios and watch temp screen till crash it shows cpu at 40 - 43 and rest of system at 20-30 c

btw this is a pentuim d cpu if it matters
 
come on all, any ideas at all, can a cpu do this and have no burnt looking areas ?? maby a bad cap with out any leakage ?? out of the 2 remaininnng parts cpu and mobo I do not have the resourses to test them independent of each other
 
I think a cpu could make the noise your describing, but I don't know this for sure. I would think a cap could as well. Honestly the only thing I can think of is a poor fit between the cpu and the socket. If that's not it, my gut would tell me a bad cap, but that's just a guess......Sorry I can't help more.
 
have you pulled your mobo to make sure its not a grouding problem with your case. I've seen mobos do that if they where not sat properly.

and a helpfull peice of advice. sdont plug anything back to this thing until you figure it out. it does nto take alot to kill a logic board on a HDD.
 
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