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

Hi,

Another user with 3003/3004 errors joining.

I have replaced all the NEC/TOKIN with capacitors, and added the bridges in the bottom of the PCB. Prior to this, unfortunately I did not have a look to the SYSCON, but now I tested and I see mainly 3004 errors, and some 3003 also.

Any suggestion on what to look or test is welcome!
 
OK, did you measure the capacitance of the new capacitors you put on?

I suspect their reading is lower or broken?

If you can grab some 1000uf capacitors and solder 1 at a time on both the CELL and RSX tokin points
See if the errors clear, I suspect your new tantaulum caps are not too good.

If this has no affect then you will need to start testing the voltage readings and confirm the readings.

What board is it?

Update: Saw your first post with pics, looks like a COK-002 board
So take a look at this https://workupload.com/file/sU28rACBaCZ
Has testpoints and expected voltage readings

doragasu said:
Hi,

Another user with 3003/3004 errors joining.

I have replaced all the NEC/TOKIN with capacitors, and added the bridges in the bottom of the PCB. Prior to this, unfortunately I did not have a look to the SYSCON, but now I tested and I see mainly 3004 errors, and some 3003 also.

Any suggestion on what to look or test is welcome!
Click to expand...
 
Last edited:
doragasu said:
Hi,

Another user with 3003/3004 errors joining.

I have replaced all the NEC/TOKIN with capacitors, and added the bridges in the bottom of the PCB. Prior to this, unfortunately I did not have a look to the SYSCON, but now I tested and I see mainly 3004 errors, and some 3003 also.

Any suggestion on what to look or test is welcome!
Click to expand...

Errors 3003 and 3004 are related to the VRM sector of CELL and RSX respectively.

Before this thread me and @marciolsf began analyze the syscon errors, in some cases as reverse engineering, causing some errors.

Follow the service manual, if your board is COK-001 or COK-002 see pages 24 and 25, on respective Service Manual, if SEM-001 pages 25 and 26, if another PS3 fat board search for this component: (there is one for CELL(error 3003) and one for RSX(error 3004))

X7ElKqG.jpg


For errors 3003 and 3004 the pin 7 probably is 0v, in a working PS3 this pin have 3.3v, so any component from VRM is not working, check this pin. Check if pin 22 have 12v.

In one of my boards I get error 3004, I changed 2 nec for 8 tantalums 470uf, but before changed them I verified the capacitance and ESR of each tantalum.

I hope I was helpfull!
 
First of all, thanks a lot for help!

Unfortunately my multimeter cannot read capacitance, so I can't verify the capacitors I soldered. But I do not suspect them, they are new and bought at Digikey past week. I have been buying components to Digikey for years, and never had problems with them. About the ESR, they are rated 100 mOhm. I do not know how much ESR is OK, the tutorial only mentions capacitance and voltage, but 100 mOhm is pretty low (there are capacitors with lower ESR, but 100 mOhm is pretty good).

Anyway, I think the idea of soldering 1000 uF capacitros to test is a good one and I'll try it, I have 3x1000 uF capacitors plus a 2200 uF capacitor, so I can start testing with those.

If that does not work, I will grab my oscilloscope and start measuring voltages in the power points and the chips you have suggested.
 
Tried with 3 1000 uF capacitors plus a 2200 uF one. Didn't help, I get 3004.
IMG_20200705_171731.jpg
I'll remove them and start measuring voltages.
 
doragasu said:
If that does not work, I will grab my oscilloscope and start measuring voltages in the power points and the chips you have suggested.
Click to expand...

I was not lucky with electrolytics, only with tantalums.

Check the IC that I recommended, as it is error 3004 check what is next to the RSX.

Also check pin 29, it must be 3.3v when power on the PS3.

This is a link with signals from a working PS3.
https://imgur.com/a/VJ3mzqh
 
db260179 said:
OK, did you measure the capacitance of the new capacitors you put on?

I suspect their reading is lower or broken?

If you can grab some 1000uf capacitors and solder 1 at a time on both the CELL and RSX tokin points
See if the errors clear, I suspect your new tantaulum caps are not too good.

If this has no affect then you will need to start testing the voltage readings and confirm the readings.

What board is it?

Update: Saw your first post with pics, looks like a COK-002 board
So take a look at this https://workupload.com/file/sU28rACBaCZ
Has testpoints and expected voltage readings
Click to expand...
Thanks for uploading the list of test points!
db260179 said:
OK, did you measure the capacitance of the new capacitors you put on?

I suspect their reading is lower or broken?

If you can grab some 1000uf capacitors and solder 1 at a time on both the CELL and RSX tokin points
See if the errors clear, I suspect your new tantaulum caps are not too good.

If this has no affect then you will need to start testing the voltage readings and confirm the readings.

What board is it?

Update: Saw your first post with pics, looks like a COK-002 board
So take a look at this https://workupload.com/file/sU28rACBaCZ
Has testpoints and expected voltage readings
Click to expand...
Thanks for posting that list! I was having a bit of trouble reading test points in the picture itself, so I went looking for the picture. The google was strong with me this morning, so here's a bigger version of it
aFtGECI.png
 
LSL said:
I was not lucky with electrolytics, only with tantalums.

Check the IC that I recommended, as it is error 3004 check what is next to the RSX.

Also check pin 29, it must be 3.3v when power on the PS3.

This is a link with signals from a working PS3.
https://imgur.com/a/VJ3mzqh
Click to expand...

I have started measuring CELL and RSX signals. CELL seems OK:
IMG_20200705_175923.jpg

But for RSX, when I power the thing on, signal rises only to about 100 mV, and then goes down. I suppose it makes sense since the error I am getting consistently now is 3004. Gotta continue measuring...
 
marciolsf said:
aFtGECI.png
Click to expand...

Check this voltages:
+1.8v_RSX_PLL_VDD (JL6048) - Test after inductor
+1.2V_RSX_VDDC (NEC-Tokin)
+1.2V_RSX_VDDR (JL9651)
+1.2V_YC_RC_VDDIO (JL9652)
+1.5V_RSX_VDDIO (JL9656)
+1.8V_RSX_FBVQQD (JL9657)

All voltages feed the RSX (page 9 CECHA Manual Service)

I dońt know if a fault in one of them causes error 3004
 
+1.8v_RSX_PLL_VDD (JL6048) - Test after inductor:
IMG_20200705_183838.jpg


+1.2V_RSX_VDDC (NEC-Tokin): Tested before: tries rising about 100 mV and then goes down

+1.2V_RSX_VDDR (JL9651):
IMG_20200705_184707.jpg

+1.2V_YC_RC_VDDIO (JL9652)
IMG_20200705_184307_1.jpg

+1.5V_RSX_VDDIO (JL9656)
IMG_20200705_184411.jpg

+1.8V_RSX_FBVQQD (JL9657)
IMG_20200705_184517_1.jpg

Excepting the voltage in the NEC/TOKINs, everything looks OK to me.
 
Could you please tell me the capacitance of the capacitor in the red ellipse? While replacing the capacitors, I accidentally stroke it and it was desoldered and lost, I could not find it. In the YLoD thread I was told it is 100 pF, and I replaced it with a 0603 100 pF capacitor. But I am wondering if maybe the value is wrong and my problem is related to it.
X7ElKqG.jpg


Also, is the service manual available anywhere?
 
I also forgot to write I measured pins 7 and 22 of the IC. Pin 7 is effectively 0 (it goes up a few millivolts and then back to 0), and pin 22 goes to 12V, then 10V, then 12V again, and then 0V.
 
db260179 said:
Your pushing down is a clear example of poor BGA connection - reflow is required im afraid or a reball.
Click to expand...

Its a long time since last reflow I did. Probably 5 years ago.

What are the recomendations to do reflow?

I have a handmade wooden greenhouse that can reach 100 ° Celsius, a smd rework station and a heat gun
 
doragasu said:
Could you please tell me the capacitance of the capacitor in the red ellipse? While replacing the capacitors, I accidentally stroke it and it was desoldered and lost, I could not find it. In the YLoD thread I was told it is 100 pF, and I replaced it with a 0603 100 pF capacitor. But I am wondering if maybe the value is wrong and my problem is related to it.
View attachment 26643

Also, is the service manual available anywhere?
Click to expand...
I'll check the value for that component when I get home. I tried uploading the service manual yesterday, but it's above the file size limit. I'll see if I can do a PR into the syscon github repo.
 
doragasu said:
I have started measuring CELL and RSX signals. CELL seems OK:
View attachment 26637

But for RSX, when I power the thing on, signal rises only to about 100 mV, and then goes down. I suppose it makes sense since the error I am getting consistently now is 3004. Gotta continue measuring...
Click to expand...

CELL/RSX voltages coming out of the TOKIN caps you need to set time axis to 1us and voltage axis to 50mv to see clearly. 5ms won't tell you anything. Check my signature for the reference images - I have the exact same scope.
 
doragasu said:
Could you please tell me the capacitance of the capacitor in the red ellipse? While replacing the capacitors, I accidentally stroke it and it was desoldered and lost, I could not find it. In the YLoD thread I was told it is 100 pF, and I replaced it with a 0603 100 pF capacitor. But I am wondering if maybe the value is wrong and my problem is related to it.

Also, is the service manual available anywhere?
Click to expand...

c6277 = 100p

page 26, sector C2 - Service manual CECHA
 
Thanks for all the replies. I will try measuring again the RSX voltage on the NEC/TOKINs when I get time (maybe next weekend...).

If the capacitor is 100p, then that should not be my problem, since I also replaced it with a 100 pF one.

Thanks also for the service manual, my board is COK-002, but seems pretty similar.
 
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