Help Noob corona v2 4gb nand read gone wrong now no power

[chris je]

Hi All
Did my first 4gb nand qsb install the other day with wires instead of direct to the the MOB i used j-runner detected the qsb but didnt relise i had to select the drive letter in j-runner so i thought it was bad wiring for the read so i then desoldered the wires on the qsb and then soldered the qsb Board on the MOB as it was meant for but messed up the JOB i Hate QSB Boards:mad2:
so desoldered the qsb from the MOB and tryed to turn on the xbox and nothing just Bleeps:facepalm:

so have read up it could be the traces on the board if any one could help it would be grate cheers

 

[[AD]]

Have you wrote or erased your nand? (attempted to?)

Also clean up all that lint off your board and post a photo of all the areas you have soldered to.

 

[chris je]

Hey so this it what i did
1,I read the nand in J-runner 4 times ,j-runner said nands were the same and then i thought i better get the dash ver first so i took the sd out of the comuter then tried to turn on the console??
and nothing so then i thought maybe i need to create ecc then write ecc so did that and still the same no power:facepalm:

cleaned up the MOB
heres some photos of the MOB the two right photos are upside down

 

[nofeloniesyet]

Hey so this it what i did
1,I read the nand in J-runner 4 times ,j-runner said nands were the same and then i thought i better get the dash ver first so i took the sd out of the comuter then tried to turn on the console??
and nothing so then i thought maybe i need to create ecc then write ecc so did that and still the same no power:facepalm:

cleaned up the MOB
heres some photos of the MOB the two right photos are upside down


View attachment 26489View attachment 26490View attachment 26491

most likley you have damaged one of the pads where sd card solders to.sometimes the breaks/tears can not be seen by naked eye,take a multimeter and check for continuance from each trace from southbridge back to nand.

 

[chris je]

Ok have a multimeter do i set it to ohms and is there a diagram for southbridge as well??
sorry is i sound stupid as well :crazy:but trying learn as you got to start some where.
and what would be voltage be???

 

[nofeloniesyet]

Ok have a multimeter do i set it to ohms and is there a diagram for southbridge as well??
sorry is i sound stupid as well :crazy:but trying learn as you got to start some where.
and what would be voltage be???

your not looking for voltage or ohms but continuance,search here on this site for xmods 4gb rebuild

 

[chris je]

ok i will try look at it later see what i get!!!

cheers

 

[microshaft]

your not looking for voltage or ohms but continuance,search here on this site for xmods 4gb rebuild

err yes he does use ohms

 

[BL4K3Y]

err yes he does use ohms

In electronics, a signal travels from A to B and a continuity check tells you if two points are connected.

A continuity check is not the same as checking for resistance.

 

[chris je]

ok guys tested the traces and didnt find and broken traces??

 

[Ac1dR3d]

i have one with no trace damage here too... laying around beeping...

if ull find any cure... ill be glad to hear about it.

 

[jsinger47]

i have one with no trace damage here too... laying around beeping...

if ull find any cure... ill be glad to hear about it.

Convert it to 16MB. Fixed. This is a common problem mentioned in many threads, actually. You simply have to be good at soldering with a general knowledge of how NANDs work.

 

[morinzo]

I had one that done that and I had to write the original nand back (full dump) to the console 3-4 times before it started working again.

 

[Ac1dR3d]

Convert it to 16MB. Fixed. This is a common problem mentioned in many threads, actually. You simply have to be good at soldering with a general knowledge of how NANDs work.

is there any info i can find on converting? and ... can i use trinity nand chip for corona convertion?

i heard you done that few times...
be glad to learn how-to

 

[jekdyell]

check the trace coming from pad 3,and the trace from pad 14.

 

[davyboy]

Scrape trace carefully either side of break check continuity

 

[chris je]

I have check all trace and there is no breaks to the nand!! is it possible i read the nand wrong in j-runner??
what i did in j-runner was this
1.read the nand 4 times says nands are the same corona 4gb
2.create ecc
3.wrie ecc

???????:facepalm:

now if it is a bad nand i have done do i have create a new one from scracth??

and yes i have looked over the other forums to get answers but getting lost witch one to follow????

cheers

also this is the log from j-runner

Initializing nanddump1.bin..
Too Many Bad Blocks
Header is wrong..
Corona 4GB
Nand Initialization Finished
F:\
Reading from F:\ to C:\Users\xbox\Desktop\xbox\J-Runner\output\nanddump2.bin
Done!
in 0:17 min:sec
Comparing...
Can't check for bad blocks. No Spare data. Possibly Corona 4GB
Can't check for bad blocks. No Spare data. Possibly Corona 4GB
Nands are the same
F:\
Reading from F:\ to C:\Users\xbox\Desktop\xbox\J-Runner\output\nanddump3.bin
Done!
in 0:17 min:sec
Comparing...
Can't check for bad blocks. No Spare data. Possibly Corona 4GB
Can't check for bad blocks. No Spare data. Possibly Corona 4GB
Nands are the same
F:\
Reading from F:\ to C:\Users\xbox\Desktop\xbox\J-Runner\output\nanddump4.bin
Done!
in 0:17 min:sec
Comparing...
Can't check for bad blocks. No Spare data. Possibly Corona 4GB
Can't check for bad blocks. No Spare data. Possibly Corona 4GB
Nands are the same
ECC created
Writing to F:\ from C:\Users\xbox\Desktop\xbox\J-Runner\output\image_00000000.ecc
Done!
in 0:02:452 min:sec:ms
Initializing nanddump1.bin..
Too Many Bad Blocks
Header is wrong..
Corona 4GB
Nand Initialization Finished

 

[chris je]

bump

 

[Martin C]

Bumping a help thread is a no-no. If you need it repaired, find someone local.

 

[chris je]

sorry martin did'nt realise it was a "no no" plus sending it off to someone to repair wouldnt be worth the time and money as it is just cheaper to buy a new one that's why i started the thread
but thanks for everyone's help