An update to my previous post, I couldn't really find a spare BD3504 on the slim board KTE-001 no matter how hard I tried.
More importantly, we tried to do the Frankenstein mod on a COK-002 but no success so far. Resistors have been modded as per Felix's tutorial, the RSX has been transplanted with the CXD5301A1GB model and I rewrote the EEPROM through syscon as noted, voltage mod not done yet to ease up diagnostics, which was a good call. I can't get the console to turn on.
As noted, I tried using both EEPROM training set variants `w 3254 21 EC` and `w 3254 21 EB` (and fixing the checksum afterwards), but neither seems to work.
Code:
ofst[ 92]:err_code:0xa0404002, clock:0xffffffff
ofst[ 96]:err_code:0xa0403034, clock:0xffffffff
ofst[100]:err_code:0xa0404412, clock:0xffffffff
ofst[104]:err_code:0xa0403034, clock:0xffffffff
I get the code 4002 with EB and 4412 with EC. From what I've gathered, 4002 usually means wrong training set, and 4412 that something is wrong with the RSX on a hardware level. My friend paid a non-miniscule sum for the job to a guy with a proper BGA rework station, does that mean he just did not do the job properly, or is there another explanation? The RSX chip was harvested from a perfectly working slim unit.
One curious thing is that even though the 3034 failure is usually called YLOD, I've never actually seen a yellow light while turning on the console, it's just red.