Xbox 360E model:1538 not turning on

[tsiga]

Hello everyone!

I have two same console with same error. Not turning on.
Model:Xbox 360E model:1538
The power birck led is lights on amber.- Tested with this methood. Link
I measured the power button circuit to power panel connector, everithing looks good. local console guru said, southbridge error--> I replaced it with new.. same error.

Can't find schematic or any document for this error.
Can somebody help me?

[stj]

Re: Xbox 360E model:1538 not turning on

is the psu giving 12v?

[tsiga]

Re: Xbox 360E model:1538 not turning on

Yes,
5V stand by is present, and when the psu is on, 12V present based on video

[lotas]

Re: Xbox 360E model:1538 not turning on

A common cause in slims (does not turn on) is a problem in the 3.3v DC converter (in 5v - out 3.3v).

[tsiga]

Re: Xbox 360E model:1538 not turning on

Thank you.
I measured 5V is present the 3.3V just 0.28V
I not found this tiny voltage regulator name, type or any datasheet.
Is there any solution to bypass or change to other components?
I found article in which he mentions, to replace with AMS1117.. it is working?

[lotas]

Re: Xbox 360E model:1538 not turning on

Yes, you can put AMS1117 3.3 with a fixed voltage of 3.3v

"J7(X)" is "RT8057"

Sometimes they put: "CEY" - That is "TPS62560"

[tsiga]

Re: Xbox 360E model:1538 not turning on

Thank you, so much!

[tsiga]

Re: Xbox 360E model:1538 not turning on

working!
Thanks!!

[sam_sam_sam]

Re: Xbox 360E model:1538 not turning on

working!
Thanks!!

I like your repair this has a very professional look to it
One more item that did not end up in the landfill

Very nice work