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RROD Repaired 360, Heatsinks Cool But Fans Loud.

post #1 of 20
Thread Starter 
Apologies in advance for the long post. I have a knack for explaining things in length. tongue.gif

Hey all, I've just got a Falcon 360 from a friend that was RROD. He had attempted the penny and X-clamp (bolt) replacement fixes, he did the penny fix wrong and obviously the bolt replacement too, cause' that didn't work.

So he got a new one for Christmas, and passed the old unto me. I took it, took the motherboard out, set it level, and hit it with a heat-gun. After this it's working fine. I brought it in, set it up, and started Skate 2; played it for about 35 min, then switched off to Fable 2. When I had finished playing it was running with load for about an hour and 15 min, no problem at all.

So up until this point I had been running off a flash drive setup as a memory unit on the 360. I had found my old HDD and shut the 360 down to install the HDD. When I turned it back on it fired up fine, and went into Skate 2. I played for a while, then began to notice the 360 was getting to be quite loud.

I figured it was the DVD drive, but upon further investigation I realized the fans were kicking up to their higher end speed and making as much, if not more noise then the DVD drive at full speed. As I continued to play, the 360 finally overheated and gave me the 2 red lights to indicate such.

After some thought I've concluded there's a good chance that one of two things have happened.

1. When I did the heat-gun fix with the bolts holding the heatsinks down instead of the X-clamp, there may be a chance that the heatsinks weren't mounted perfectly flat, or at least close enough to perfectly flat, causing damage.

2. Or, with the heat the board has warped a little more now and is making less contact with the heatsinks.

I've done my best to make the heatsinks flat against the die, adjusting the bolts to find the best balance of tension and flatness. I've now got the 360 working, with the fans still reving up after about 5 min of gameplay. But I haven't been able to get it to overheat. I ran it with the top off after doing this and (with cardboard shrouds over CPU and GPU Heatsinks) both heatsinks never get so hot that you can't comfortably grab onto them.

I'm going to get some fresh thermal paste ASAP, although the guy who had it before me put some fresh stuff on, I'm still going for it.

If anyone knows any tricks to make sure I'm tightening these 8 bolts to the right tension while making the heatsinks even and flat, I'm all ears.

Any other constructive input of any kind on my situation is greatly appreciated.

Thanks in advance! biggrin.gif

*EDIT/UPDATE*
I took the heatsinks off and took the thermal paste that had been pushed off the sides of the die and put it back in the center with a knife so it'd be spread again when I put the heatsink back on and.. All is well! It's quite a difference, played about 3 hours of Skate 2 (heh, missed that game) it was nice and quiet; within reason. Fresh thermal paste is definitely my #1 priority.

*EDIT 2*
I put on fresh thermal paste, made sure the heatsinks were even, and using a dremel tool and rounded sander drill bit, I made the hole and the mounts for a 90mm exhaust fan over top of the GPU heatpipe heatsink. Then wired the fan into the DVD drive's 12V (now the CPU intake fan).

*EDIT 3*
With the new fan installed, heatsinks even, and fresh thermal paste, my 360 is in working order. Here's some pics:

attachment.php?attachmentid=189423&stc=1&d=1294755126

attachment.php?attachmentid=189424&stc=1&d=1294755126

Comment as you please! Sorry about lo quality phone pics. rolleyes.gif
Edited by PaRaDoX_883 - 1/12/11 at 12:21pm
post #2 of 20
I dont know crap about the insides of an xbox but if you got a problem with the cpu and the heatsink being together properly you could always lap the heatsink (if it comes off that is)

maybe some washers to give more pressure on the cpu?
Edited by ckybam3 - 1/7/11 at 10:30pm
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post #3 of 20
Thread Starter 
The mod I've got on the CPU/GPU (replacing the mounting brackets with bolts) has nylon washers up against the motherboard, and then metal washers to spread the force.

Either way, I took the heatsinks off and took the thermal paste that had been pushed off the sides of the die and put it back in the center with a knife so it'd be spread again when I put the heatsink on and.. All is well! It's quite a difference, so fresh thermal paste is definitely my #1 priority.
Edited by PaRaDoX_883 - 1/8/11 at 12:00am
post #4 of 20
if you got thermal paste oozing over the edges you put too much on
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post #5 of 20
Thread Starter 
Quote:
Originally Posted by ckybam3;11934412 
if you got thermal paste oozing over the edges you put too much on

It's always like that, these are smaller dies then normal CPU's now days, more the size of an old athlon's die, even M$ shipped it out oozing over the side, I assure you, this is not the problem.
post #6 of 20
Quote:
Originally Posted by PaRaDoX_883;11937340 
It's always like that, these are smaller dies then normal CPU's now days, more the size of an old athlon's die, even M$ shipped it out oozing over the side, I assure you, this is not the problem.

wait so your saying because ms does it its ok? Too much tim and your temps get worse and you know it. I guess you fixed it kifing the excess back to the middle but thats not good either because you could have cause a possible air pocket.
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post #7 of 20
Quote:
Originally Posted by ckybam3;11937583 
wait so your saying because ms does it its ok? Too much tim and your temps get worse and you know it. I guess you fixed it kifing the excess back to the middle but thats not good either because you could have cause a possible air pocket.

Are you familiar with the internal components of CPU/GPU and their heat emission then?

As much as I'm prone to say that indeed oozing TIM from under the sink is quite a bit too much I can't help but think that if I had to that I would do it any different because I simply haven't a clue on how the die is setup exactly.
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post #8 of 20
thats good how you fixed it. I would recommend getting some better fans. Are those MS fans 80MM? You could also mod the top with a 120 fan.. It really all comes down to all the work you want to do.
post #9 of 20
Quote:
Originally Posted by MasterFire;11937656 
Are you familiar with the internal components of CPU/GPU and their heat emission then?

As much as I'm prone to say that indeed oozing TIM from under the sink is quite a bit too much I can't help but think that if I had to that I would do it any different because I simply haven't a clue on how the die is setup exactly.

read around anywhere on here and you will find tons of ppl saying too much tim is bad. all the xbox is really is a smaller computer modded a bit. There is no secret to the fact that too much tim on a gpu or cpu yields lower temps.

If his temps are fine hes fine
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post #10 of 20
Cky. This is the CPU.

xbox360-cpu.jpg
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