I owned a Fat launch PS3 and recently sold it at a premium since it had B/C and they had overheating issues and I wanted to sell it before that might occur. I've spent considerable time doing research ...
I have an old US 60GB PS3 Fat with backwards compatibility (CBEH-1000) (with HDD upgraded)... I know lot of people had overheating issues, YLOD etc. with their fat models and it is always whay people ...