Cpu Burnout

[mcrites]

I need some help here. I have burnt 2 amd 1.4 cpus now, and am trying to figure out what the heck I am doing wrong here. I had one cpu, and while trying to get the watercooling setup from dangerden I have, I let it stay at 60C a little to long to burn it up. I take the responsibility for this one.

But on the second proc, I put AS2 on the die, there is great waterflow, and I had great contact with the waterblock. I made sure by undoing the waterblock and checking for AS2 on it. I then put it back together, and then I turned the system on. At first I did not get a POST. Then I cleared the CMOS. After this I got a POST and got into the BIOS. The temp of the proc was going quickly up to 45C so I turned off the computer, and tightened down the waterblock even more. I turned it back on, and had it around 42C, btw this mobo is a kg7, but after 3 minutes or so of this descent temp, one of the stupid nylon screws that dangerden sent came loose. This is because the kg7 seems to have larger holes than normal, so I had to use two washers to hold it to the motherboard. Well the washer on the bottom of the motherboard came off and the temp shot from 42C to 53C in one second. I quickly turned it off 2 seconds later, I know I have around 3 seconds, but I got it as soon as I could. I took off the mobo and fixed the screw, and put everything back together, tight. I booted up, and out from the proc comes a burning smell. I quickly turn the system off 2 seconds later via the ps. Then I take off the waterblock and examine the CPU, nothing that looks wrong, or nothing to indicated where the smell came from. I put it all back together, and back to no POST again.

Please give me any suggestions, that I am missing, or hints. I know these buggers run hot, but man 3 seconds screwup and you need a new proc. Even tho they are cheap, $100 a pop can add up quick :)

[mcrites]

When you pay for a cooling cube, 6 feet of silicon hose, a maze 2 and an eheim 1250, you dont want to drop it :)

[touser]

well from what it seems like the only possible reason i can see for what has happened to you is not good contact between the cpu and waterblock..i mean for it to burn up like that in 3 seconds the only possible reason for that is A.the pump wasnt on or B. the waterblock was makeing 0 or very little contact with the cpu...i also have high temps with my water rig but load is 44C much lower then yours where.. i also have the DD complete kit as well..

[Paul -The Mad Hatter]

check upder the bottom of you cpu if there is a sticker or something put there by the reseller, that might explain the burning. as for the not booting check if anything from the waterblock that is conductive is touching any small resitors or things like that.

[mcrites]

My waterblock is making great contact. It was sitting at 42C for 3 whole minutes, until the screw came off. I am thinking it was a defective CPU, it looks like its already seen some major use. The writing on the die, is really faded, this might not mean anything, but my other proc was easily readable.
I am going to take this proc back and get another one. Also, when I first booted up it detected it as a 1050, which is weird. The mobo once again is a kg7. Also, the water pump is on. There are no stickers on this proc. Also, I dont believe the proc is getting shorted.

[mcrites]

Should I try my mc370-blah and delta on my next proc before the waterblock?

[Kingslayer]

You had a waterblock come loose twice. Clean the goo off the CPU and check for a cracked core....

[mcrites]

I have carefully examined the die, there are not any cracks or chips.

[Naeleros]

You said that you had good flow.. but.. have you verified it for sure? Make doubly sure that you don't have any kinks, etc. To test it I would remove a hose while it is all in place and see the flow coming out. You might have some kind of obstruction.

Also, are you getting good performance from your radiator(s)? Check the temperature of the air coming out of them as well as the volume of air. Compare that to a 'finger test' temperature of the waterblock. Your waterblock should be warm to the touch.. but.. if its very hot and the temp of the air coming out of the radiator is cool.. well.. you get the drift.

James

[FASTRTHANU]

Sounds like an issue with the cooling block touching the die. Make sure it is "cool" before you mount it. Then make sure it's not rocking side to side or lifting on the cam side of the socket. As for the 1050Mhz on boot up, that's what speed a 1.4 w/133 FSB boots up to when the board is set at 100 FSB. Check that out.

[woodenman80]

I expect this is a real stupid thing to say but you are using thermal grease or something right like Arctic silver 2 etc this will make sure that you have a good thermal transfer another major thing are you sure that your cpu was just not crap or possible crap mb.. ????


Woodenman

When the penguins Freeze i say more cooling more cooling....

[mcrites]

Yeah, to make sure I had good flow, before I mounted everything I pulled a hose off the radiator and water was coming out pretty good. Then I replaced the water through the fill line. I have a flourescent dye colored blue in the water, and the pipes are filled blue. When I set the waterblock on, it seems to be flush, and I know its making contact every time, because there is arctic silver 2 on the copper block. I am thinking like I said before that this processor must of been used in another system before they sold it to me. The writing on the die is horribly faded compared to my other 1.4 amd cpu's die. I think it died, when the screw came loose the first time, and after I fixed the screw, and turned it back on thats when I got the bad smell. Can anyone tell me where this smell comes from? Is it the as2 burning or something because, like I said before, there is no stickers or anything like that at all on the processor, and there are no cracks on the die, nor burn spots anywhere at all on the proc. Thanks for all the suggestions so far, I think its because I am unlucky with the mounting screw coming loose. I am trying to think of a better way to mount the block before I install another cpu. Any suggestions on that as well? I am using 2 washers to secure a 1/8 or so inch screw, in a 1/4 inch hole.

[mcrites]

Would this work on a dangerden maze 2:
https://www.overclockershideout.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=o&Product_Code=UHDD&Category_Code=WBSD
?

[Naeleros]

If you can't see any physical damage to the cpu... make sure its the processor that failed and not the mobo. Try a different proc (with a air cooler) to see if the mobo is alright. Also, look around on the mobo to see if you have anything burned up on it.

It wouldn't matter if the proc was 'used'. The scenario that you described is a catastrophic failure one.

James

[mcrites]

I am going to exchange the processor on tuesday. The smell came from the proc within 3 seconds of a boot, and I turned off the system asap. I think if I get a better moutning system for my waterblock, this would not happen. I believe it happened due to the screw coming loose, oh well. Anyways, please someone comment on the overclockershideout socket a waterblock method. Thanks for suggestions.

[woodenman80]

Just a query the chap just above in the replys sed cheack your motherboard has shorted or something is shorting it . As about a month ago my 16 year old bro decided to put some fans in his case and fiddlin with the cpu oc etc. Next thing i know it wont start and there are horrible burning smells coming from the pc around the proc and it wont post ... i though the little blighter had blown my old K6/3 450 oc 500 but after a serious checkover found that he had dropped a case screw down the back of the mboard and this was shorting behind the proc so check your screws arnt doing that. The K6/3 still works in it gA-5AX board its just got a black burn mark on the PCB lol..


Woodenman

When penguins freeze i shout more cooling more cooling.

[mcrites]

There is not any screws underneath the mobo on the mobo tray. As soon as I find my screw driver I will check the pcb for burn marks.

Update: No burn marks on the any part of the mobo as far as I can tell.

[mcrites]

Man, I have the worst luck. Now my board wont power up at all. I dunno if its the board or the ps. I guess I will go to CompUSA and get a 300 W pos, to see if it will work, and get a better ps later. Why do I have such bad luck?:/