RGH Jasper 16MB, 6751 no green light with donor 6750

[dogeatdog]

Ok, I don't want to hijack another one's thread here, so hence this new one

My situation :

- Jasper 16mb. 6751 CB. Occasionally rrods (1 in 5 times) on stock nand.

Dumped nand as usual. Used Multibuild 0.3 for ecc. Gave me a warning that 6751 was not compatible and that it would use a 6750 donor. Okay, fine. Go right ahead.

I flash the ecc (yes, +w16, it's not my first glitch..).

Then, I boot the xbox. Where I usually expect the green light on the CR to light up a few times, it just stays red. As if the code that triggers the CR is never reached. I try this a couple of times. Same result.

So I start doing the usual checks. Clean up, resolder, other CR, 68nF, 47nF, longer wires, shorter wires, different routes, alt. 3.3v. You name it, I tried it. Still not a single green light on the CR.

As a last resort I use an old version of ggbuild to create an ecc. I doesn't moan about the 6751CB and just spits out an ecc file.

I flash that to the xbox, and voila.. green light in an interval as I would expect it. But, it still doesn't glitch.. keeps giving the green light at a nice interval, but no glitch.

Finally I flash back the original nand (with CR AND Olimex connected) and it boots normally (stock) again.

So. Any of you guys got a clue to what is going on (Software wise) ? No, I don't have pics of my soldering and that is not my question (not just yet ).

I am just wondering why the .ecc multibuild 0.3 spits out won't even let the green light interval kick in on the CR and the old ggbuild one (which uses no donor cb?) does.

Or could the rrod which one in 5 boots shows could be causing my headaches ?

Thanks for any insight.

 

[diaboliq20]

the RROD would be a concern but not what is csusing your issue Iwould imagine.
1 in 5 boots RROD? what's the secondary error? has this been modified previously? any soldering etc?
I had issues generating the ecc for my Jasper 16mb but it was CB 6750 so I just used bestpigs....
I would say the ecc is the issue here though - sorry I'm not of more use atm

 

[dogeatdog]

the RROD would be a concern but not what is csusing your issue Iwould imagine.
1 in 5 boots RROD? what's the secondary error? has this been modified previously? any soldering etc?
I had issues generating the ecc for my Jasper 16mb but it was CB 6750 so I just used bestpigs....
I would say the ecc is the issue here though - sorry I'm not of more use atm

No prob, thanks for your response

No soldering. I did saw traces of an xclamp reseated, so I imagine this box has been in someone's care before this..

Secondary error code is 0022. I read somewhere this could be a short with PLL_BYPASS, so I cleaned that and resoldered just to be sure. Even without the wires attached it gave 0022, so I doubt that was the issue.

 

[diaboliq20]

did the RROD only happen after install?

When you say traces of xclamp reseated - what do you mean? is there damage to the board?

 

[dogeatdog]

did the RROD only happen after install?

When you say traces of xclamp reseated - what do you mean? is there damage to the board?

No, RROD was there before. Since it booted fine the following couple of attempts I decided to glitch it anyway.

You know how pliers can cause scratchmarks on metal ? Those were present on both xclamps.

 

[diaboliq20]

there's a trace near the RAM bricks that can cause this issue if someone has been messing with the xclamps.....
I have just read in ROGERO's thread that someone else is having an issue with the ecc generated using a donor NAND

---------- Post added at 11:23 ---------- Previous post was at 11:20 ----------

have you tried V2 to create the ecc?

 

[dogeatdog]

there's a trace near the RAM bricks that can cause this issue if someone has been messing with the xclamps.....
I have just read in ROGERO's thread that someone else is having an issue with the ecc generated using a donor NAND

---------- Post added at 11:23 ---------- Previous post was at 11:20 ----------

have you tried V2 to create the ecc?

No, only 0.3 and the original ggbuild (python stuff). I'll try 0.2 !

I just read Rogero's thread and have downloaded the patched build.py. I'll integrate it tonight and try again

 

[diaboliq20]

don't forget to post the results mate

 

[dogeatdog]

Sit tight for about 9 hours.. i'll be back

 

[kapil888]

The new Build.py should be the fix. He said that ecc and gg images had issues with the old build.py so that could be the solution to your problem.

 

[dogeatdog]

And he is correct

Not as fast as I would like it to be, but it glitches !! Now to get it to run optimal

Thanks guys !