You are right Gobabushka !!

I was surprised to see the empty slot and supposed somebody has removed it in the first place, so was mistaken.

The IIIx is very different from the III (more or less like a SE/30 and a SE...identical in the outside but rather different in the inside)

Boards and screen cannot be compared, and the standard IIIx slot is empty !!

I was looking at IIIx images this afternoon and discovered a working IIIx with no rom board (and discovered that ram and rom were incorporated in the main board)

So took apart once again the IIIx and discovered i could ear the faint click of the digitizer, but without image

I had my answer now, the screen is gone, everything else is working.

The screen ribbon is gone bad and pressing down that cable improves things a little bit :



Tried to heat that one with an hair dryer (was bad anyway) but no real improvement was found, as soon as i don't press the cable down, the screen stop working. :



the good thing is... i know what is wrong with it.