Moded Ps2 -Does not read disk

[soteris]

Hi ,
I have a ps2 model 77004 and I have put the matrix infinity chip.
When it boots I get the matrix logo and I can get into the infinity configuration menu (Infinity manager 1.99).
The problem is that It can not read any discs (DVD or PS2 games) the disc just speening with a weird sound.
Does anyone know where the problem can be, I attached the schematic I use.
Any help will be appreciated, thanks.

[Joe Forster/STA]

Did you put the modchip into the console yourself? Maybe, you damaged something on the way... :( If possible, remove the modchip temporarily and see if the console starts working (with factory disks).

[soteris]

I have checked the connections again and made some resoldering now the disk does not make any weird sounds.
I have put a copy game into the ps2 and it read it
perfectly, but it stayed at the point where say loading
game.
Then I reset it, and now I do not have any signal to the TV
screen, not even the matrix logo, nothing.
What could be the problem with that did anyone had similar experience.