jasper BB with 6751 cb problems + possible solutions

[modguru]

hello  everyone
i will write this maybe someone elese has the same problem and have find a solution .
as i have read so far and i have read alot in all the forums tx , scene , here , the do not exist something standar for this console 512 bb 6751 cb
everyone has his issues and in every case is diferend senario 680p, 50n 100n 68n diferent sollutions every time .
here is mine situation and is my first time something like that hapend .
i have dump 512 nand and 3 times for 64 mb  i have a perfect dump and i use multibuilder to create ecc . the message for the bad cb comes up and i know that multibuilder use donor cb to make the ecc so i have continue . i have write the image and i have try and with nandpro2 and with nandpro 3 ( i have 2 olimex pcb ). i use my one  custom pcb for all the consoles . (it is not the chip the chip in other console works perfect) . and wen i power on the console the green led blinks and the fans every 4- 5 sec make reset it works normaly . the problem is that the console never boot to xel and after 30 sec the fans starts to grow they speed and after a minute a minute and half  they works 100% speed . the console it is not hot at all . and this is the final stage of the console a consoleplane ready to flight . and no xell .. if anyone can helps with that i will be very hapy ...
ps i thing that will be very nice if someone has another problem with his 512 bb console to write the problem  and his solution to one thread . or here to start helps other people ...  please just write the problem and the solution you will help alot .

[Tag234]

Jasper BB consoles with 6751 CB do have issues. I can confirm. In the last month I have glitched about 30 Jaspers now, all using Xecuter Coolrunners /w their cap and the same wire path. Nearly every single console boots within 5s EXCEPT for 3 6751CB Jasper BB consoles. These consoles do not boot at all.

What will happen is I will build an ecc normally using 360 Multi Builder, and after wiring everything up in the same way as normal, these consoles do not boot. The green light will blink as if it is attempting to glitch, and eventually it will stop blinking (as if it did glitch) but xell never shows. If I remove the cap, itll blink more times (as if its attempting to glitch and its taking longer) and will eventually stop blinking but will never show xell. Changing my wiring path seems to have no effect except for sometimes making the green light blink a few more times, which is expected.

This is not just for 512MB jaspers, the problem exists in 256MB also. It also doesnt happen to all 6751CB BigBlock Jaspers, only about a quarter of them. I don't have enough technical knowledge to understand how to fix or work on something like this, but I do have consoles with the issue to test solutions etc...

To me, it looks like these consoles are glitching, but xell just isnt showing up, and I don't understand why ~_~

[iLLNESS]

Jasper BB consoles with 6751 CB do have issues. I can confirm. In the last month I have glitched about 30 Jaspers now, all using Xecuter Coolrunners /w their cap and the same wire path. Nearly every single console boots within 5s EXCEPT for 3 6751CB Jasper BB consoles. These consoles do not boot at all.

What will happen is I will build an ecc normally using 360 Multi Builder, and after wiring everything up in the same way as normal, these consoles do not boot. The green light will blink as if it is attempting to glitch, and eventually it will stop blinking (as if it did glitch) but xell never shows. If I remove the cap, itll blink more times (as if its attempting to glitch and its taking longer) and will eventually stop blinking but will never show xell. Changing my wiring path seems to have no effect except for sometimes making the green light blink a few more times, which is expected.

This is not just for 512MB jaspers, the problem exists in 256MB also. It also doesnt happen to all 6751CB BigBlock Jaspers, only about a quarter of them. I don't have enough technical knowledge to understand how to fix or work on something like this, but I do have consoles with the issue to test solutions etc...

To me, it looks like these consoles are glitching, but xell just isnt showing up, and I don't understand why ~_~

i have seen a 512 jasper do this as well. have yet to find a solution. console appears to glitch normally, stops like a successful glitch but nothing on screen. also was 6751. i cant remember what the post showed but i believe it was an undocumented code or a code that shouldnt even appear (kernel related).

[nknave]

I don't know if the following will work for you, but it might.


I had this issue once with a 256mb Arcade CB 6751 and the last thing I did and that made it work was to have a full backup of my nand, after ERASE it all, everything!!! and than just flash .ecc to load Xell and BAM!!! on the first green light it booted to Xell and I resumed after flashing the rest of the nand via RawFlash v4.


Like I said, this is my scenario since I normally just backup the first 80 blocks to dump the rest through Xellous... so this was my solution.

[Tag234]

interesting. I usually read the whole 64MB section for each console, but I will try to do a -e256 / -e512 and then write only the .ecc and maybe that will work.

It looks more like the consoles are just having some odd error rather than in incompatibility, so maybe something like this will work. Ill post results when I get back to the shop and can give this a try.

[Tag234]

I tried an erase and reflashing just xell on the board: No change. Still shows the same issues as before... Any more ideas?? It seems like more and more people are encountering this. I have 3 boards that are doing it now.

[edsondario]

the original NAND it starts normally? If possible take picture of the CPU_PLL point was to see how the soldering. Where is the wire going CPU_RESET?

[moshbear]

Have you tried using 6750 CB? There's no LDV difference between the two, so use 6750 for xell, etc.

I had a JasperBB 6751, that, flashed with 6750, booted on first glitch every time.

[TPMJB]

I've noticed the phenomena where the board stops glitching, as if it glitched already, but the console doesn't boot. In my experience, the problem had to do with wiring. My CPU_PLL wire went under the x-clamps, causing just enough interference to cause the xbox to not boot. I think I've had a couple CB6751 Jaspers with no issues since having to be really anal about the wires..

[moshbear]

The TX routing diagrams help, though I don't remember if it was original or the first alt layout.