PS3 Need Help with 4 PS3 Fats

Hello everyone
Since i got my hands on a Fat PS3 and managing to bring it back to life, i was fascinated by the internals and wanted to lean more. On top, wanting to make up for my previous delidding victim, i decided to get my hands on more consoles to learn how to repair them and see if i could get them running again.

I currently have 4 PS3s:

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PS3 #1: CECHG03 with SEM-001 1-873-384-11 board:

This one has a 48 second GLOD, after which it shuts off with no beeps.
Reading its Syscon log shows A08014FF and A0801701 errors, which don't do much to point to any particular fault.
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I took the console apart further and there appear to not be any signs of previous repairs, other than some odd solder balls under the FBVDDQ cap of the RSX and a resistor by the Syscon, but they don't seem to cause a short, so I left them alone for now.
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RSX resistances seem pretty suspect, especially VDDC at 1.4 Ohm, though I don't know what healthy resistances would be for a 90nm RSX. I attached a photo with the resistances i measured. To note, these resistances get lower by quite a bit when the chip warms up (VDDC: 1.3Ohm, FBVDDQ: 85Ohm, VDDR 103 Ohm, VDDIO: 65.6 Ohms)
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If anyone got any ideas on what i should check next, please let me know.

PS3 #2 CECHC03 with COK-002 1-873-513-31 board:

This one boots, but crashes shortly after with green artifacts.
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It appears to be what someone would call a "heatgun special'. One of the tokins is completely cracked open, while the others are melted, and the RSX chip has visible burns and missing the balls on the corners.
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Given that RSX resistances seem "healthy", im not fully disregarding the idea that the damaged Tokins could be noisy enough to be the cause of the artefacts, even if the fault is most likely the crispy GPU or both.
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Reading the Syscon log doesnt reveal much other than that the CPU probably needs delidding, since its overheating even with fresh MX-6 on top the IHS
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PS3 #3 CECHC04 with COK-002 1-873-513-21 board:

This one has an instant YLOD with A0093004 errors.
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I was originally bought as a PSU donor for PS3 #4, with a little hope of also getting the board to work.
It has had water damage around the power ribbon header and GPU VRM controller (IC6201).
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I cleaned up the corrosion around both, replaced the chip and a few resistors at the top that were affected , though I'm not sure I got the right values on them, probably explaining why I'm still missing RSX VDDC.
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Are there any other points I should check that could cause vcore to be missing?

PS3 #4: CECHG04 with SEM-001 1-873-384-21 board:
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This one is my original Fat that kickstarted it all. Its previous owner stole its power supply and had attempted to delid both the Cell and RSX, but applied thermal paste only on top of the CPU IHS, causing the console to YLOD because it was overheating. So I re-did the delid and applied fresh MX-4 to both, but glued the CPU IHS back down with 4 small dots of super glue, a stupid mistake that I used to make when i was starting out with delidding stuff, have since switched to high temperature silicone for re-liding.
It worked great for a year and a half, but unfortunately it gave in with 3034 and 4432 errors a month ago. I believe these were caused by the Cell, since it endured a lot of abuse, and because errors 1601 and 1701 showed up before 3034. I took it apart again, and the force of the thermal paste pops the CPU lid off again, and in an attempt to clean the superglue, i cut a trace on it.
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I still hope to fix this one someday, but yeah it dead for now.
 
CECHG03 - power related, nec/tokin, 90nm RSX will go bad, or is bad.
Both the Cell and RSX do get powered and appear to have all voltages present, although RSX VDDC and FBVDDQ are at 1.3V and 2.0V, which are higher than the normal 1.2V and 1.8v. Im not sure that could be the problem. Power Supply is also not the issue, since i had tried a different one with no change.

Also an update on CECHC04:

Noticed R6201 had a corroded pad i missed when i replaced IC6201. Since i couldn't find resistors of identical values (1.5K), i replaced R6201 with a 1K one, (Had replaced R6202, R6203 and R6204 also with 1K ones when i switched the chip), still no change. A very short burst of voltage before it would YLOD and cut out.
Giving the board another look over, I decide to remove and clean IC6023 and R6018 that had cruddy pads. In doing so, one of R6018's end caps got damaged. I tried to solder it back as best as i could but no change, quite the opposite actually. There is no voltage showing up anymore, The console turns on by itself and I'm also missing 3.3V and 5V MISC lines now (Had not checked before,so im not sure if they were present previously)
I will shelve it till get proper replacements for all resistors to hopefully at least get back to where i begun. Will update when that happens.
 
Update on CECHG03

Got the Syscon into internal mode and see what happens during boot in the bringup log. The connection was really flaky, sometimes authenticating fine, then crashing when i try and send a command, but i did manage to get it to work in the end.

Becount reports this console has about 2653 Hours of uptime, so its pretty low on hours.

Using the "bringup" command only, it would halt here and not show anything else even after the console shuts itself off.
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So to get more info i thought of using "bestat" to see what the CPU was doing. Had to use it a couple times to get the entire process but here it is:
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