Can't boot PS1 on FW29

I haven't played a PS1 game for a while, but wanted to yesterday, but the screen is on filled in the upper half, the rest is some wierd green and grey pixels, i tried different settings in bm, but won't help. I first had the Slim PS2 connected with component cable and my tv said the picture is 480p ???, then i tried rgb scart but no difference in picture, i see the whole picture but it's squeezed in the upper half of the screen and the changing the settings didn't help...thanks for your help...

I have a slimline PS2 PAL (1.4) with a CC2.0 running firmware 29 and Ps1 games work fine. Copies and Originals work without anyproblems.

Is the SX wire on your chip soldered on ?

About the wire i guess it's soldered, because ps1 games used to work, but since i upgraded to fw29 i haven't played any ps1 game. I tried backups and originals both with the same effect...