PS3 Help interpreting Syscon logs on a PS3 Slim

[prosa21]

Hi, I'm trying to learn how to repair consoles and for that purpose I've acquired a PS3 Slim which turns off automatically around 40 seconds after turning it on (triple beep and red light blinking). There's no A/V output during that time. I know that the console has been opened before, but I don't know what has been done to it.
I connected to the syscon (sherwood) and this is what I got:

Spoiler: Syscon logs

>$ errlog
00000000
# CODE CLOCK
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF
# FFFFFFFF FFFFFFFF


>$ r 800 8
00000000
# +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
# -----------------------------------------------
# 01 6E 01 5C 00 15 EC 11
(366 bringups) (348 shutdowns) (1436689 seconds (16.6 days) running)

>$ bringup
00000000
# [SSM] Bringup Start.
# [SSM] PS0 ok.
# [SSM] PS1 ok.

>$
00000000
# [SSM] PS2 ok.
# [SSM] PS3 ok.
# [SSM] PS4 ok.
# (PowerOn State)
OK 00000000
#!
#!Boot Loader SE Version 3.1.5
#!(Build ID: 3814,43498,
#!Build Date: 2009-12-01_21:11:40)
#!
#!Copyright(C) 2009 Sony Computer Entertainment Inc.All Rights Reserved.
#!
#![ERROR]: 0xb0002002 (FATAL) XDR Link not initilized.
#!ITC_DUMP
#!0000

I found it strange that the error log didn't show any errors, but the bringup command shows that 2002 error. From what I researched online, it could be faulty RAM chips or a broken connection between the CPU and RAM, because of broken solder joints, for example. Is this information correct? Can you help me in understanding what should I do to pinpoint the root cause of the problem?

Any help would be very appreciated. Thanks!

 

[manuki]

Not sure if this helps, but I had a very similar case when doing a Frankenstein - the console behaved almost exactly the same: quick shutdown, no video output, and basically empty Syscon logs.

In my case it turned out the RSX had a short. Even though there were no classic error entries in the logs, the console still ended up in a YLOD condition.

Quick question: are you getting a full YLOD (yellow light + 3 beeps), or just a red blinking light after it shuts down?