PS3 PS3 FAT CECHC04 - COK-002 - GLOD - no video on HDMI and Component

Timbo9876 said:
The thermal pads are not melted they are just compressed together. Like I said try taking the mod out and give it another test. If it's worse then you know the mod had a positive impact just wasn't good enough. If its the same then you may need to add a little more pressure for the mod to work. If that has no impact its time to de-lid and apply liquid metal
Click to expand...
I'm a bit afraid of liquid metal. :) It's conductive. But I know it's better
 
Timbo9876 said:
The thermal pads are not melted they are just compressed together. Like I said try taking the mod out and give it another test. If it's worse then you know the mod had a positive impact just wasn't good enough. If its the same then you may need to add a little more pressure for the mod to work. If that has no impact its time to de-lid and apply liquid metal
Click to expand...
(wasnt thermal pads, it was rubber for pencils)
 
SkaziChris said:
Hello,

I just received a rare console model CECHC04 with hardware backward compatibility.
Mobo: COK-002 - described in the picture below



DEFECT:
no video from HDMI
no video from Component
it is so called GLOD (green light of death)

BEHAVIOR:
Console starts up.
Turns on, but no video output.
Recovery menu can be started:
eg.

console is turned off
I hold the power button - green light - one beep - power off - red light - release the power button
I hold the power button - green light - one beep - two beeps - green light - release the power button
Normally, recovery menu should pop up on the screen, even if the console had a different resolution set before.

There is no mechanical damage on mobo.
Both HDMI and Component are visually OK.
HDMI connector was measured using an old hdmi plug with stripped cable.

HDD and BDROM are not blocking mobo startup (checked with and without).

PSU is working fine, taken from another working console.
It gives 5V (green and diodes are working, so it means 5V powerline is ok).
It gives 12v cause the console starts up and does not turn off by itself.

So... since the console boots up to the recovery menu,
it means that:
- the SYSCON is working, it enables CPU power.
- CPU Induction coils and NEC/tokin capacitors are ok,
- CPU is working as well

Otherwise, I'd have a 'hard brick'.

The tokin capacitors have low resistance, but it is normal in these mobos.
If they would be faulty, there would be RLOD/YLOD error (Red Light of Death/Yellow Light of Death)

I think it is not Sil9231CBU (HDMI IC) 'cause AV (component) isn't working as well, so the root cause is before Sil IC.
Sil is connected with RSX and GS,
and GS is also connected to MultiAV IC.


QUESTION:
how to diagnose this further?

Usually, in these mobos, the fault is caused by RSX BGA, but there is no 100% certainty.
I assume that if RSX would be bad, then I would also get RLOD/YLOD, and in this case... the console seems to start up.
I don't want to unnecesarily heat up the mobo, if it is not RSX.

Do you guys have any ideas what else I can check before I risk reflowing/reballing the RSX?
Click to expand...
Hi. Did you solve the problem? I have the exact same GLOD on a COK-002 and like you I can start the console, turn it off, recovery, one beep two beeps etc. but no video signal. Have you tried searching with syscon?
 
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