My Ps3 slim (2004b) didn't show the YLOD, but I think the problem is the same. The fan turn to max in about 1 minute or less, then the console turned off with a blinking red led (and to can turn on again I had to wait some time) It was about 2 years old, but I made the mistake to use it in the summer (it was my first Ps3). Replacing the upper termal paste didn't change anything. I'm not a expert about Ps3, I always thought this problem, as the YLOD one, is due to the poor lead-free tin that make the chip partially desoldering from the motherboard, so there's need for reballing. I guessed it wrong? Now (since many years) I have a super slim (with HAN) and the temperature is about 60°C in idle. Never goes above 70 when playing, but I never used it in the summer.