my ps3 stopped displaying hdmi after changing it from rebug to normal mode on rebug 4.84 (d rex) after switching kernel lvl it asked me to reboot it i did and when it started again it wouldnt display hdmi i took it apart replaced thermal paste on the 2 pads on the heatsink its from 2007 so i honestly dont think its been done since then...anyways after doing this my ps3 turns on fine and the fan kicks on after 20 seconds or so but it wont display hdmi at all before i changed the thermal...
CECHG01 display/thermal paste problem
CECHG01 display/thermal paste problem