X68000 cz600ce black screen

[agemon]

Hi, i would like to get some help to get a og grey x68 running (brough as junk).
The computer show some sign of life: when i press the psu buttons (behind), the power led go red and when i press the power buttons the power led go green and the high reso led go red.

I connect the x68 with a vga adapter to a crt monitor who detect something but black screen, same with an upscaller (sync on something but no picture).
I just recaped all the board (not the psu and the floppy drive) and changed the cristal near the battery. The second floppy drive as the edge connector broken (the one with the floppy ribbon).

Is there something i can verify or test?