What are the signs of the e-fuse being blown?

[mcornbill]

Hi Guys

If a jtag has been on Xbox live and the e-fuse has been blown because of it, what does the console do after this?

Basically I have a jtag which was working fine but now has no video/audio out when powered up, and the green rings don't spin round either on the power button. Console just sits there powered up with solid green light on. Eject function still works fine and produces the same result if powered up from it.

You can connect a control pad to the console which will turn it on and off like normal but the 1st quadrant on the console doesn't light green to show the control pad is connected, nor does the control pad 1st quadrant light.

Have yet to open her up and check solder points but this console left here working perfectly only days ago.

Cheers
Mark

 

[seanr28]

sounds like a corrupt nand, efuse I would have though would give an e79 error, should still have video, could also be an ealry sign of RROD

 

[mcornbill]

Cheers Sean

But a corrupt nand that was functioning fine beforehand? Can a nand image just go bad of its own accord? Will open her up later, do some nand dumps, check continuity of solder points etc.

Cheers
Mark

 

[M AzeeM K]

Which MB does the Xbox360 have? Xenon?

 

[redisafsb]

try and power on with the eject button and see if you get anything. Once this happened to me and all it took was to rewrite xell so forth and so on. but the easiest thing is going to try and test read the nand and see if you have access but I agree if e-fuses were blown you should get an error

 

[-Shox-]

I'd say your LEDs are Damaged and Try Plugging in the A/V Cable if you haven't already?

 

[mcornbill]

Hi guys

Thanks for your replies. Well after dumping the nand and comparing it to the nand I actually wrote to the console, there were about 7 unmatching blocks! I reckon my mate had possibly accepted an update off a game disc perhaps?

Re-flashed my freeboot nand back on and it's all working again now.

Cheers
Mark