ylod ps3 a0801701 a040303 a0901001 a0404412 syscon

Hi everyone, I hope someone can help me. I'm gaining experience in the repair of PlayStation, especially in the PS3 with YLOD. I have already fixed for hobby 2 fat (CECHG04, CECHL04 and a slim). Now I have 2 fat CECHC04 in my hands, very interesting because they are backwards compatible with PS1...