RROD and whisper fan

[Simon Sudbury]

Hi

Had the RROD so did another reflow (did one a year ago which worked likea dream). This time no good but I noticed that the whisper fan doesn't come on and the drive doesn't eject. It's also weird that I can't get any sort of image on the TV screen (originally got E74 but now nothing). Secondary code is 0031 which I know can be related to Southbridge.

Have I got the chicken and egg the wrong way around here? Is it failure of the fan that's caused the RROD?

Than

[Arakon]

If it had just been the fan, it would've shut down after a few mins every time due to overheating.

[Utter Chaos]

0031 mostly means one of these things:

- One of the cooling blocks from GPU/CPU touches the motherboard. Try loosening the bolts a lot and then check to see if fans will start spinning after boot. If so you might get overheat lights fast (leds 1 and 3 blinking red) but at least you know what the problem is. Be sure to put some washers between the blocks and the motherboard (1 nylon first and then 1 steel works best for me).

- 0031 can also be caused by ram that got cracked. Might have gone something wrong in you're reflowing. Just see if it boots with bolts lightened a lot, if so you're RAM is ok.

PS: Been a long time since i posted here but done some rrod repairs lately and my last one was a 0031 which is running fine again after lightening the bolts a little.

[l_oliveira]

Seriosly, from my experience, all errors on the 003x range relate to the SMC (southbridge).

Blackadder would be the person to confirm or deny this.

I have an Jasper console which will not even power the CPU/GPU and spits an 0031 error outright. When I apply some soft pressure on top of the SMC chip (PSB) it boots fine to the dashboard. If I cease the pressure it freezes, then shut down the CPU/GPU and goes 0031 again.

I suspect it's a cold joint under the PSB chip here on my console, btw.

[Blackaddr]

Error code 0031 is a new error code introduced for the HDMI consoles (the ones with a HANA, not ANA).  Speculation is that the debug pins on the Xenon were repurposed as HANA controls for these consoles.

The SMC will set this error when one of these previous debug pins is asserted.  I suspect this is some kind of status/error signal from the HANA.

If this signal has a pullup somewhere, a bad solder joint at either the SMC or the HANA could cause this error code.

[l_oliveira]

Error code 0031 is a new error code introduced for the HDMI consoles (the ones with a HANA, not ANA).  Speculation is that the debug pins on the Xenon were repurposed as HANA controls for these consoles.

The SMC will set this error when one of these previous debug pins is asserted.  I suspect this is some kind of status/error signal from the HANA.

If this signal has a pullup somewhere, a bad solder joint at either the SMC or the HANA could cause this error code.

Awesome man ! Now I know EXACTLY where to look for faults on my Jasper.  

[Simon Sudbury]

Many thanks for these replies. I tried loosening the screws but no joy. Clearly some sort of short has caused the xbox to shut down the fan (drive wouldn't eject too). I have an Elite (old Phat one) and when I did the heat gun I think I hit the chip above the Southbridge. Am I right in thinking that the Southbridge is the aquare one with the white Microsoft logo? Does anyone know what this other chip is? It's to the right of the CPU/RAM chips.

Many thanks

Tony

[Simon Sudbury]

Update

Reheated GPU, CPU, RAM etc but now get 0110 which I know is related to RAM. Two quick questions if I may:

1. Would this error knock out the fan as it doesn't come on?
2. Would I be best having another go at the RAM chips with the heat gun or do everything again?

Many thanks

[Gazcoigne]

none of the above errors should stop the fan spinning at any time, only 0001 002 & 0003 errors occur with no fan.

you have most likely blown the mofsets that regulate the fans, careless reflowing.

i have had many consoles that had bad RAM BGA connections that was sorted with a reflow.

and when the RAM chips go bad, the fans kick in mega hard, then RROD.

[Simon Sudbury]

Hi

Thanks for this. Others have said that the short between Southbridge and RAM chip disables fan etc. This was my original 0031. I seem to have somehow got rid of this but replaced with 0110. If you're right I have two probs which are unrelated.

I was careful with the heat gun as have done it successfully before.

What are these mofsets and can they be replaced?

If I reflow should I just do RAM chips and can someone advise on heat gun power settings and time for front and rear of MB.

Thank you.

[l_oliveira]

Update

Reheated GPU, CPU, RAM etc but now get 0110 which I know is related to RAM. Two quick questions if I may:

1. Would this error knock out the fan as it doesn't come on?
2. Would I be best having another go at the RAM chips with the heat gun or do everything again?

Many thanks

0102 (E18) means there's cut lines between the GPU and RAM.
0110 (E20) means there's shorts on RAM signal lines. Extremely tricky to troubleshoot without xray... -_-

Neither error specifies where exactly the problem is.

[Simon Sudbury]

Probably nothing to lose in heat gun then.