I have now got the AV-module (thanks, mdivancic).
Unfortunately, the system still won't boot. I have a basic scan-doubler connected to the RGB-output and an LCD-monitor connected thrue VGA. When I power up the A4000, the screen goes on (there is signal coming) but the screen stays blank. No color changes, no flashes, nothing. On PAL mode (jumper on the motherboard) there is a small coloured line on the bottom of the screen (this is a very cheap scan-doubler, and should be normal).
What I think it's weird, is that the screen stays blank whether I have or don't have a CPU card installed. So it seems there is no boot system test going on?
I have tried re-seating the Kickstarts (haven't removed them, don't have an IC-puller at hand). All other jumpers look correctly set (I don't have any RAM at the sockets at the moment, does it matter how the SIMM size jumper is set then?).
I am kind of running out of ideas :confused: