Xbox Slim E - Corona V6 - after NAND write - no respose

[valentin]

All was installed. I have writen back the Original Nand a ive made a Test. Everything worked. Next i have desoldered the DGX and the Postfix Adapter and i have also Tested it and everything worked. At last i have desoldered the QSB and after that the Xbox dont power on. No sound and no lights. Looks like a power adapter failure but the Power Adapter is OK.

And i have also tested the Pads with the Corona 4GB QSB Rebuild schemaand the contacts are ok. Looks like no power is going true the Motherboard.

 

[playingmax]

can you post log showing what u wrote to console.

 

[ablegepu]

Im at a loss then, really. If you did it the way you said you did and it booted before you removed the nand R/W QSB then it should boot now because I have seen the u1d1 header and it looks fine and if you said it checks out then I dont know. The other pictures you posted looked ok also I didn't see anything missing or broken. only other thing I could tell you is remove the heatsink and look around under it around the xcgpu and under the x-clamp. Playingmax even if he wrote the wrong image wouldn't it rdod then?

 

[valentin]

If i wrote a wrong Nand the there would be at last a red ring. But Nothing. I will try to wrote it again and i will post the ressult.

 

[valentin]

I have writen back the originla NAND that i have from the first dump. Its a full dump. But nothing. Still doesnt work. How can i measure if there is going power true the xbox or smething becasuit looks like no power is going tru. The pads are OK as the other like CPU_RST or the area of POST_OUT. I dont know where could the problem be ....

 

[valentin]

Log from J-Runner.

Initializing nanddump1.bin..
Corona 4GB
Glitch2 Selected
Nand Initialization Finished
Writing to O:\ from G:\J-Runner v02 Beta (288) Core Pack\nanddump1.bin
Done!
in 14:45:369 min:sec:ms

 

[playingmax]

WTF, "in 14:45:369 min:sec:ms" should not take this long to write nand to console.
should be around 0:08:202 to write nand back to console.

 

[playingmax]

also update ur jrunner.

 

[valentin]

I am at the latest JR-Runner. And this is a 4GB NAND full dump. So i dont know how long it take.

 

[ablegepu]

playing max I think it is right because in the description of the Corona 4GB nand R/W kit it says it is able to dump 50mb in 10 seconds.
4gb= 4000mb divided by 50mb = 80
80x10=800 divided by 60 seconds = 13 minutes and 33 seconds which is only what 1 minute & 12 seconds from 14:45....

Am I wrong by coming to this conclusion????

 

[valentin]

Its ok guys but i need to know whats wrong with the Xbox. Why its not turning on ? No sound and no lights.

 

[ablegepu]

Did you ever pull heatsink off and look under it and the x-clamp for missing or broken component's?

 

[valentin]

Yes i have looked everywhere. No komponents are missing. It muss be something with the pads for the QSB. Because after i have desoldered them the Xbox wont start. I have measured the pads and they are connected to each other.

 

[ablegepu]

Write down each resistors number and measure the resistance of each of the resistors all around the u1d1 header. Can't see right now but there may be 8-10 of them

 

[valentin]

I have measured the resistors around U1D1.

R1D3 - 22,5 ohms - measured on 200
R1D4 - 7,10 ohms - measured on 20k
R1D5 - 22,2 ohms - measured on 200
R1D6 - 22,2 ohms - measured on 200
R1D7 - 22,2 ohms - measured on 200
R1D8 - 22,1 ohms - measured on 200
R2D1 - 22,5 ohms - measured on 200
R2D2 - 22,1 ohms - measured on 200
R2D3 - 22,1 ohms - measured on 200
R2D4 - 22,7 ohms - measured on 200

These are the measured ohms of the Resistors.

 

[ablegepu]

Anybody else think that r1d4 might be the problem? Does anyone know the correct resistance of r1d4?

Well I just found it in abother post. R1d4 is supposed to be 10k ohms and 7k is probably letting too Much power through. It is possible to with too much heat to make a resistor lose resistance. Recheck it with multimeter and replace if it is still 7.10kohms

 

[stucknvegas]

It sounds like your 4 gig Nand has corruption ..Do you still have have the 5 volt signal at the USB hubs
Nobody does full dumps on 4 gig by the way .
I have had 4 different E slim 4 gigs Barf the Nand ..The final symptom is no 5 V power to USB hubs won't even attempt to start the console
When the Nand is normal it sends a ready command to the south bridge and the south bridge powers up the USB hubs
The only cure is 16-M/B nand conversion

 

[ablegepu]

It sounds like your 4 gig Nand has corruption ..Do you still have have the 5 volt signal at the USB hubs
Nobody does full dumps on 4 gig by the way .
I have had 4 different E slim 4 gigs Barf the Nand ..The final symptom is no 5 V power to USB hubs won't even attempt to start the console
When the Nand is normal it sends a ready command to the south bridge and the south bridge powers up the USB hubs
The only cure is 16-M/B nand conversion

So basically try plugging your cell phones USB charger cable in to the Xboxs USB ports and see if it tries to charge the phone. Or just stick your multimeter test leads in there and see if you get 5 volts DC.

 

[stucknvegas]

One of the E-slims V-6 I had was working on CR-4- I had removed the sound card reader QSB-- Then I wanted to sell it to Just play back-ups Retail
I used simple nand flasher to write the original nand and it failed during the write Then soldered a QSB back on on it got worse and worse Then flat line no power
One of the symptoms he has is taking so long to write the Nand
Also a wired controller to test the USB 5_V momentary light pulse of the controller works well
My rule of thumb is no power to USB most of the time no Nand reading

 

[valentin]

The R1D4 show 2,7 ohms on 20k with Black needle on the right side. And 12,13 ohms on 20k when ze Black needle is on left side. The USB hub shows no power and Phone doesnt charge.