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[bjouan]

Just to give more details, I have already tried un-bridge U6T1 and make some measures from capacitors from CPU and GPU. The resistance from decoupling capacitors from CPU shows 8.8 Ohms and from decoupling capacitors from GPU shows 2.7 Ohms.
Reading the Microsoft debug manual, what I found online, those measures are corrects. Does someone have any difference?

Regards,
bjouan

[bjouan]

QUOTE(bjouan @ Sep 27 2013, 03:58 AM)

Just to give more details, I have already tried un-bridge U6T1 and make some measures from capacitors from CPU and GPU. The resistance from decoupling capacitors from CPU shows 8.8 Ohms and from decoupling capacitors from GPU shows 2.7 Ohms.
Reading the Microsoft debug manual, what I found online, those measures are corrects. Does someone have any difference?

Regards,
bjouan

Guys please some help here!

After lots of hours debugging the hardware I have found some odd stuff. The correct booting flow chart is:

1.   Power OnDetected? Wait until ok
2.   SMC Sends PSU_V12P0_EN
3.   SMC Receives ANA_V12P0_PWRGD
4.   SMC Enables VREG_GPU_EN_N
5.   Received VREG_GPU_PWRGD? Wait until ok
6.   SMC Enables 5V, Vmem and 3V3 Vregs (VREG_3P3_EN Jasper)
7.   SMC Enables ANA_CLK_OE
8.   SMC Enables VREG_CPU_EN
9.   Received VREG_CPU_PWRGD? Wait until ok

However I have noticed that until step 6 everything goes ok, but at step 6 the SMC sends VREG_V5P0_EN and VREG_V1P8_EN at the same time enabling the V_5P0 (5.07 V) and V_MEM (1.89 V) respectively. Then the SMC receives the signal from IC U4V1 VREG_V5P0_VMEM_PWRGD. So far so good, but the odd stuff is the missing signal VREG_3P3_EN which supposedly would enable the IC U1F1 and the V_3P3.
I was wonder if I wire up the VREG_3P3_EN together with VREG_V5P0_EN or VREG_V1P8_EN!

Please guys I really appreciate any help!!!

[wilgo45]

You might be posting in the wrong area.

You might want to be in Hacking / Exploits / Jtagging

[bjouan]

QUOTE(wilgo45 @ Oct 10 2013, 04:03 AM)

You might be posting in the wrong area.

You might want to be in Hacking / Exploits / Jtagging

wilgo45,

I have started all over again! At this point I am trying to get it alive as a retail XBox! So it is a matter of hardware failure!

thks

[wilgo45]

There is mention on other forum boards about replacing an IC to clear a 0031 error.

IC is marked ADP1823 on the top.

I will have to check on the board position of the IC

[bjouan]

QUOTE(wilgo45 @ Oct 12 2013, 08:58 PM)

There is mention on other forum boards about replacing an IC to clear a 0031 error.

IC is marked ADP1823 on the top.

I will have to check on the board position of the IC

I have already did that. That IC is responsible for V_5P0 and V_MEM. Did not work!

[wilgo45]

OK

There is also mention about the ceramic caps around the Gpu and or Cpu being an issue to 0031.
If the respective heat sinks are shorting against the caps.

Or if any are damage or missing.

And just throwing an additional guess out there.  Maybe a Southbridge problem.  Perhaps reball the SB

[bjouan]

QUOTE(wilgo45 @ Oct 13 2013, 09:00 PM)

OK

There is also mention about the ceramic caps around the Gpu and or Cpu being an issue to 0031.
If the respective heat sinks are shorting against the caps.

Or if any are damage or missing.

And just throwing an additional guess out there.  Maybe a Southbridge problem.  Perhaps reball the SB

I have checked all the caps and resistors around CPU and GPU, everything is fine. I agree with you, I will try to reball the SB.

[wilgo45]

QUOTE(bjouan @ Oct 13 2013, 06:32 PM)

I have checked all the caps and resistors around CPU and GPU, everything is fine. I agree with you, I will try to reball the SB.

If by chance, you need a Jasper Southbridge - let me know.

I've got 2 junk Jasper motherboards.  And the proper means for lifting bga chips.

PM me if you need

[bjouan]

QUOTE(wilgo45 @ Oct 14 2013, 06:52 AM)

If by chance, you need a Jasper Southbridge - let me know.

I've got 2 junk Jasper motherboards.  And the proper means for lifting bga chips.

PM me if you need

Thanks wilgo45, That would be fantastic, however I live in Brazil! And that could be a difficulty!

[wilgo45]

QUOTE(bjouan @ Oct 14 2013, 04:54 PM)

Thanks wilgo45, That would be fantastic, however I live in Brazil! And that could be a difficulty!

Its not that difficult.  There is International shipping for US Postal.  And there is Paypal.

Well  .... I am occasionally around the Scene

[Kohler]

You can't JTAG a Xbox on that dashboard update.

[wilgo45]

QUOTE(Kohler @ Nov 4 2013, 11:27 PM)

You can't JTAG a Xbox on that dashboard update.

Kohler is quite right

You can't jtag a console on the 13599 dash.  Too late at that point.  Security is in place.

Console has to be RGH'ed to exploit.

Sorry I missed that.  It was right at the beginning