I did install a messiah 2 pro in my v3 ps2. When the plastic cover is removed the chip is working properly but once I reassembled the ps2 I got black screen and the eject is not working.
I checked for bridges, I redone the point M,N,O,P and Q,T,U,V,W with new wires, and same problem. Also no wires are pinched when reassembled.
I used 22 awg standard wire for the GND and POWER and for the other 30 awg wire.
Also the chip is powered by the 3.5v shown in the installation pdf and the color fix to the 3.3v. Anyway I measured them and I read 3.45v for both of them.
Any help will be verry appreciated, I'm working on the problem since friday and now it giving me headache.