Bridgeboard A2088XT display window output issue - Help!

[Corb_80]

Hello! I have this same issue with BOTH my XT bridgeboards in the A2000 rev 4.4, does not matter which slot i use or if I remove all other cards or whatever, I've tried cleaning slots, board connector, a bit of contact spray, wiggling card - nothing changes it.
Both cards are Rev.3 german made boards, I thought my first board was broken so recently bought another one here.. but it's the same with that so now i suspect the Amiga instead.. ;(

The cards do however respond to input so it 'works' just the display output of the PC window is scrambled, there is no issue with Amiga video in Worbench or games/other video modes.

I would love to know what other things could cause this, I'm thinking I might have a bad trace to ISA or bad Buster?

Edit, possibly ignore the D0000 error! I only saw it the one time i took a photo, it's not recurring.

 

[Flash951]

ROM checksum error indicate a possible bad connection on the board in my experience. Try re-seat all IC's in socket and use contact cleaner.

Graphic scramble: possible bad RAM for 'Janus', 2x 64kb banks... Replace ram IC's.,
Check jumper config on board for mda or cga/color. There are two jumpers that must be there.

 

[Corb_80]

Thanks, I wish I never sold my other A2000 then I could test the boards easy. Will try reseating all socketed chips.