when i start my ps3 up the resolution turns all wacky.. like a green and pink pixels. then it freezes. i try to press the power button but it wont work i have to unplug it . then i toke the top off and pressed down on top near the hdmi it will load up but if i dont put any pressure on it it will get weird color then freeze . it was working fine then day after day it got worse and worse
U have problem in ur motherboard , probability its happen when ps3 fall down or something like that , u can keep pressing on the power bottom until it shutdown u don't need to unplug cable , but u can do nothing for that , u need someone specialist in ps3 motherboard to fix this problem .