PS3 PS3 fat, YLOD on CECHC04 model, Syscon errors 1103 & 2020. Any ideas?

[zsolt94]

Hi everyone,
Im new to the forum and this probably isn't the best way for me to start off, but i've been struggling with the YLOD on my PS3.
When I bought it, the console was still unopened. It produced errors indicating overheating, loud fan, turned off after a few minutes.
I disassembled, cleaned and with special care performed the CELL and RSX delid. I cleaned it and got firss MX4 thermal paste.
Unfortunately, almost nothing changed after assembly. I installed Evilnat CFW and Webman on it so that I could monitor the temperatures.
Sometimes the console would not turn on, but if it turned on I could play GTA5 for about 5-10 minutes before YLOD. All temperatures were fine, both CELL and RSX were below 60°C when the console turned off.
The console was physically cool and the fan was also running quietly.
After the delid I didn't see any damage on either the CELL or the RSX. I've attached a picture.
All NEC Tokin are still original, untouched.

Internal syscon mode, bringup and shutdown informations:

> auth
Auth successful
> bringup
bringup
[SSM] state: 0000 -> 0101
Bringup Mode #0 (0xFF)
[SSM] ssmCb_OnStartingBePowOn() called.
[SSM] First Boot.
[SSM] Bringup mode : syspm_stat=00000000/00000000
[POWSEQ] PowerSeq_Setup called.
[SSM] state: 0101 -> 0201
[POWSEQ] AV Backend Setup
[SSM] state: 0201 -> 0102
[SSM] state: 0102 -> 0202
[SSM] state: 0202 -> 0103
[SSM] state: 0103 -> 0203
[SSM] ssmCb_BeforeBeOn() called.
[SSM] state: 0203 -> 0104
Psbd_SbTransMode_Half:0x21e2
> shutdown
[SSM] fatalreq delayed.
[WMZONE] *** Thermal Shutdown (HW INT) ***
[SSM] state: 0104 -> 0204
[SSM] *** Thermal Alert ***
[SSM] state: 0204 -> 0700
[POWSEQ] AV Backend Letup
[SSM] ssmCb_AfterBeOn2() called.
[SSM] Shutdown mode : syspm_stat=00000000/00000000
[ERROR]: 0xa0511103
[POWSEQ] PowerSeq_Letup called.
[SSM] state: 0700 -> 0600
(PowerOff State) (Fatal)
shutdown
[SSM] cannot clear fatal error state because of unrecoverable error.
>

Error logs:

> errlog
errlog
ofst[ 24]:err_code:0xffffffff, clock:0xffffffff
ofst[ 28]:err_code:0xffffffff, clock:0xffffffff
ofst[ 32]:err_code:0xffffffff, clock:0xffffffff
ofst[ 36]:err_code:0xffffffff, clock:0xffffffff
ofst[ 40]:err_code:0xffffffff, clock:0xffffffff
ofst[ 44]:err_code:0xffffffff, clock:0xffffffff
ofst[ 48]:err_code:0xffffffff, clock:0xffffffff
ofst[ 52]:err_code:0xffffffff, clock:0xffffffff
ofst[ 56]:err_code:0xffffffff, clock:0xffffffff
ofst[ 60]:err_code:0xffffffff, clock:0xffffffff
ofst[ 64]:err_code:0xffffffff, clock:0xffffffff
ofst[ 68]:err_code:0xffffffff, clock:0xffffffff
ofst[ 72]:err_code:0xffffffff, clock:0xffffffff
ofst[ 76]:err_code:0xffffffff, clock:0xffffffff
ofst[ 80]:err_code:0xffffffff, clock:0xffffffff
ofst[ 84]:err_code:0xffffffff, clock:0xffffffff
ofst[ 88]:err_code:0xffffffff, clock:0xffffffff
ofst[ 92]:err_code:0xffffffff, clock:0xffffffff
ofst[ 96]:err_code:0xffffffff, clock:0xffffffff
ofst[100]:err_code:0xffffffff, clock:0xffffffff
ofst[104]:err_code:0xffffffff, clock:0xffffffff
ofst[108]:err_code:0xffffffff, clock:0xffffffff
ofst[112]:err_code:0xffffffff, clock:0xffffffff
ofst[116]:err_code:0xffffffff, clock:0xffffffff
ofst[120]:err_code:0xffffffff, clock:0xffffffff
ofst[124]:err_code:0xffffffff, clock:0xffffffff
ofst[  0]:err_code:0xa0401103, clock:0xffffffff
ofst[  4]:err_code:0xa0801103, clock:0xffffffff
ofst[  8]:err_code:0xa0902020, clock:0xffffffff
ofst[ 12]:err_code:0xa0511103, clock:0xffffffff
ofst[ 16]:err_code:0xa0801103, clock:0xffffffff
ofst[ 20]:err_code:0xa0511103, clock:0xffffffff
[mullion]$

The previous errlog before I deleted the old ones from Syscon:

Firmware Version: 4.91 (build 50754)
Platform ID: CokB10
Product Code: 00 87
Product Sub Code: 00 03
Hardware Config: 00000000FFFFFEFF
Syscon Firmware Version: 0C16.0000000000030003 (EEPROM: 0000000000030003)

Bringup Count: 1063, Shutdown Count: 1032
Runtime: 81 Days, 10 Hours, 29 Minutes, 3 Seconds

Error Log
01: A0902120  Sat Dec 31 03:09:28 2005    (HDMI I/O Error)
02: A0902203  Sat Dec 31 03:09:28 2005    (South Bridge)
03: A0902203  Sat Dec 31 03:09:28 2005    (South Bridge)
04: A0902203  Sat Dec 31 03:09:28 2005    (South Bridge)
05: A0801201  Sat Dec 31 03:09:28 2005    (Thermal RSX)
06: A0002031  Sat Dec 31 03:09:23 2005    (Thermal Sensor, RSX)
07: A0801201  Sat Dec 31 03:09:21 2005    (Thermal RSX)
08: A0002031  Sat Dec 31 02:50:36 2005    (Thermal Sensor, RSX)
09: A0801201  Sat Dec 31 02:50:33 2005    (Thermal RSX)
10: A0002031  Sat Dec 31 02:07:09 2005    (Thermal Sensor, RSX)
11: A0801201  Sat Dec 31 02:07:07 2005    (Thermal RSX)
12: A0002031  Sat Dec 31 02:01:33 2005    (Thermal Sensor, RSX)
13: A0801201  Sat Dec 31 02:01:32 2005    (Thermal RSX)
14: A0002031  Sat Dec 31 01:47:11 2005    (Thermal Sensor, RSX)
15: A0801201  Sat Dec 31 01:47:10 2005    (Thermal RSX)
16: A0801103  Sat Dec 31 01:21:58 2005    (Thermal Alert SYSTEM)
17: A0801201  Sat Dec 31 01:16:18 2005    (Thermal RSX)
18: A0801103  Sat Dec 31 01:08:53 2005    (Thermal Alert SYSTEM)
19: A0002031  Sat Dec 31 01:00:26 2005    (Thermal Sensor, RSX)
20: A0801201  Sat Dec 31 01:00:18 2005    (Thermal RSX)
21: A0511103  Sat Dec 31 01:22:58 2005    (Thermal Alert SYSTEM)
22: A0401103  Sat Dec 31 01:21:21 2005    (Thermal Alert SYSTEM)
23: A0401103  Sat Dec 31 01:21:11 2005    (Thermal Alert SYSTEM)
24: A0401103  Sat Dec 31 01:21:02 2005    (Thermal Alert SYSTEM)
25: A0801103  Sat Dec 31 01:20:38 2005    (Thermal Alert SYSTEM)
26: A0002031  Sat Dec 31 01:00:23 2005    (Thermal Sensor, RSX)
27: A0801201  Sat Dec 31 01:00:18 2005    (Thermal RSX)
28: A0002031  Sat Dec 31 01:00:06 2005    (Thermal Sensor, RSX)
29: A0801201  Sat Dec 31 01:00:04 2005    (Thermal RSX)
30: A0902120  Sat Jan  1 00:59:59 2000    (HDMI I/O Error)
31: A0231103  Sat Jan  1 00:59:59 2000    (Thermal Alert SYSTEM)
32: FFFFFFFF  Sat Jan  1 00:59:59 2000

Any help would be appreciated.
Thanks,