First of all thanks for reading this.
I got an used ps3 fat 40gb with ofw 4.41. So, I downgraded it with e3 flasher (after cheking the fools proof guide here), all good, installed a 4.41 cfw.
After a while while playing Walking Dead Episodes, the game was suddenly freezing with a weird screen (i'll post two pictures) all the time, but not at the same point. sometimes just after opening the game, sometimes while playing, in different parts. After that some games would sometimes freeze the same way too. I did my best with the search but I couldn't find anything conclusive, so I did all the tests I could for now:
First I changed the cfw to rogero's 4.41. Walking Dead wasn't a problem anymore, but then Last of Us and Oblivion became one (last of us didn't give me this problem before).
Cheked HDD and even replaced for a 320gb (both don't have bad sectors, tested) No good
Cleaned the ps3 inside without opening (blowing some air). I had done it the day it arrived, but I tried it again also. ( I don't have the weird tool to open the 'nail' close to the hdd).
Checked temp with multiman, even though cpu gets kinda hot (77º before and 80º after playing - I live in Brazil, 30º in my room )
Checked cables (hdmi, component, even my ps2 cable) and it happens to all of them. I also checked the tv, no good.
I'm out of ideas of what to do or what it is. The biggest chance I guess is a GPU problem, anyone have any thoughts?
I'm sorry for the English, I tried my best but sometimes it's hard to know every word :X
Any questions or ideas, I will be happy to answer/test.