PS3 Fault finding YLOD with the SYSCON - First steps and Error reporting

vyktormvmpay25 said:
Ah forgot one way simple that can probably will keep unit open as glod. Simply put SB tristate on gnd. We should test that. If an rsod form it's working with nor. Can't remember for Nand. I use to read out of board, found easier to manipulate like that. It should work fine on board with teensy.
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Can you pinpoint me to that? I cant find a concrete diagram

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vyktormvmpay25 said:
Coils or whatever, what do you think it should get more relevant measurements of cpu/gpu this method?
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Is this what you suggested? I did not need hot air, iron was enough..
Now the resistance reading of the RSX is the same more or less. Still reading around 1.8 ohms. So then I don't think the reading was affected by something else shorted in the circuit.
Any other tests before I put them back?
Is it worth trying bring up now to see the voltage at the spot of the coils?

Next suspicion is the IOR regulator IC and change with another from different board. But those will really need hot air.

Is it possible just a problem with RSX itself? No right? Because is not rsx fault to get 2+ volts. Or the capacitors...
 

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Oh it should have 12 v to see 3 sec power off. You can test somehow without assembly, but be careful on shorts, see if any errors logs will exchange and see voltage of that linie
Taught you have open power line of cpu
 
Tristate always will be on gnd points. That 3v3 is marked in case to know where to power flasher from. Gnd is most easy to bo found.
Tristate is a hardware halt system for southbridge.
Earlier M4j0r told that halt command is for syscon and not a command that will halt system so we still use SB tristate to gnd for flash /unbrick units.
 
vyktormvmpay25 said:
Tristate always will be on gnd points. That 3v3 is marked in case to know where to power flasher from. Gnd is most easy to bo found.
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Oh ok, my bad. So I ground that tristate point.

Should that he a permanent connection for the time being while I keep digging into this console?

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Yes power with tristate to gnd and see if unit works longer then before. This means you need to read both nands.
It won't affect anything, just be careful not to short something else.
 
vyktormvmpay25 said:
Yes power with tristate to gnd and see if unit works longer then before. This means you need to read both nands.
It won't affect anything, just be careful not to short something else.
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Ok good news! It stays powered on! No clue if it'll do anything but I have it hooked to my TV just to see if anything shows up.

What's next now that the tristate is currently grounded?

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No on this halt mode it was before kind of hardware testing voltage and things, it won't get so hot as gpu is not used by software. Now in this mode you can only do some UART test and things like extract flash memory or so. You won't see anything on screen or paired controller, halt is kind of suspend booting to software side.
Next you must read flash memorys but I rater use an strong pc power supply 3v3 line to power common line of 3v3 from your motherboard. Those models of mobo cok001 and cok002 never fails with memory soldered on board. With sem001 is a long story.
 
vyktormvmpay25 said:
No on this halt mode it was before kind of hardware testing voltage and things, it won't get so hot as gpu is not used by software. Now in this mode you can only do some UART test and things like extract flash memory or so. You won't see anything on screen or paired controller, halt is kind of suspend booting to software side.
Next you must read flash memorys but I rater use an strong pc power supply 3v3 line to power common line of 3v3 from your motherboard. Those models of mobo cok001 and cok002 never fails with memory soldered on board. With sem001 is a long story.
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I have some buck regulators that I can adjust to 3.3v. Would that work?

I have the voltage regulator for the teensy that I was about to solder on... should I still do that or should I solder the 5v connection back and strictly power the board via external power?

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RCWD21 said:
I have some buck regulators that I can adjust to 3.3v. Would that work?

I have the voltage regulator for the teensy that I was about to solder on... should I still do that or should I solder the 5v connection back and strictly power the board via external power?

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Use 3v3 because nands/nor use 3v3 signal levels. It's dangerous to give you advice as this is more advanced users and I don't want to be responsible as I may not be an good teacher or you may not understand something may destroy boards.
 
vyktormvmpay25 said:
Oh it should have 12 v to see 3 sec power off. You can test somehow without assembly, but be careful on shorts, see if any errors logs will exchange and see voltage of that linie
Taught you have open power line of cpu
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Ok when I'm probing like this with the coils missing I'm reading 3 to 4 volts... This is already high right? And therefore means the high voltage problem is not caused by the side of the tokins and is back there as expected
The error is 09 3004 now as expected too
 

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I could give advice how to start on screen but In the end you still gone have rsod screen and this still can be fixed by patch flash with hardware flasher.
 
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