ANSWERED Looking for USB interface device, Cannot continue - Power Brick goes red

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skrue

Junior Member
Dec 2, 2011
18
0
So I have a problem with my RGH. I used QSB, connected nand-x and got this error when trying to read nand.

Looking for USB interface device, Cannot continue

Also I noticed that the light on the power brick goes to red as soon as I connect it to the motherboard.

I have testet all of my soldering points using a multimeter. There are no errors, and all of the qsb points are connected to the right spot.

The only point I did not connect to the QSB is the STBY_SLK.

Also I did not connect the coolrunner at this point, just trying to read the nand.
 
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dyzie

Junior Member
Dec 20, 2011
14
0
in a relative variable
try another powerbrick. try placing the mobo back into the metal casing before plugging in if you didn't already.

out of curiosity did you wear a static bracelet when installing the qsb's?

did you check if this xbox booted before install?

just being thorough.
 
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skrue

Junior Member
Dec 2, 2011
18
0
I have tried two different power supplys, booth goes red as soon as I connect the motherboard.

I always use a antistatic armchain just to be on the safe side.

The xbox worked just fine before I started, so i really want it to work and glitch:)

I did notice one thing when testing with a multimeter.

The two red spots on the pic gives me a biib on booth side of the motherboard. Not sure how I can have bricked those two point, so maybe the are supposed to be connected?

 
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slipcky6

VIP Member
Apr 5, 2009
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Either solder the STBY_SLK down OR slide a piece of paper underneath. I had this happen to Slim I did, I did not solder it down and it was just sitting on it and for some reason it would not boot. I believe it is because the QSB is just barley touching it making a crappy connection shorting it out.
 
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skrue

Junior Member
Dec 2, 2011
18
0
dyzie said:
not sure what you mean by biib but i dont know why you wouldnt have soldered this point.

View attachment 6036

Solder and report back.
Click to expand...
biib means beep lol. The multimeter makes a sound during the continuity test. I did this to make sure that all points on the qsb were connected to the right point on the motherboard.

Also it is soldered. I marked it red just to point out which two points I was talking about.

STBY_SLK has a bit of tape covering it when trying to read nand.
 
Martin C

Martin C

VIP Member
Jan 10, 2004
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Scotland, UK
www.team-xecuter.com
Look at the NAND-x troubleshooting link in my sig and make sure your values match.

The two points in red are both GND, so don't worry about that.

From what you've already said, you have a short on the 5v standby rail, so you need to check everywhere you've touched with a soldering iron.
 
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skrue

Junior Member
Dec 2, 2011
18
0
I have now removed the qsb and looked over the entire motherboard. Cant find any short by looking with a magnifying glass.

I did notice some flux left behind. Can this have caused the short when connected to the power brick?

I have one more xbox to try this on. Hopefully it will go better this time:)
 
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skrue

Junior Member
Dec 2, 2011
18
0
Everything still goes red.

I missed that part, I will take a look at it now:)
 
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skrue

Junior Member
Dec 2, 2011
18
0
I accually have two motherboards that gives me the same error when trying to read nand. The only differences is that one of them the power brick goes red.

Followed your link and did the testing.

1 - 5V
2 - 0V
3 - 5V
4 - 0V
5 - 3V
6 - 0V

So 1-3 is wrong it seems.

On the one where power brick is red I get 0 volt on all of them.
 
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skrue

Junior Member
Dec 2, 2011
18
0
A little update.

The one with wrong values are ow forking and glitching fine.

The other one still gets red light on power brick and all values are 0V.

I have looked over the entire board, but cant find any errors.
 
Martin C

Martin C

VIP Member
Jan 10, 2004
35,981
0
Scotland, UK
www.team-xecuter.com
skrue said:
A little update.

The one with wrong values are ow forking and glitching fine.

The other one still gets red light on power brick and all values are 0V.

I have looked over the entire board, but cant find any errors.
Click to expand...
Was it working before you started?

If so, you need to go over everything you've done, including the possibility of you shorting anything by bad soldering. It might just be a MOSFET at fault. Either way, I don't think you can sort this yourself.
 
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