Mac IIfx video problem
Hi, I picked up a discarded Mac IIfx that powers up but gives no video output to the 16" Apple Display I've got it hooked up to. The display is one of those with the speakers on the sides that came with the PM 6400/6500 models. The video card in the IIfx is a 1987 Mac II Apple Nubus video card with the standard Apple DB15 port. When the computer powers up it sounds like the harddrive is working and the system loads into the RAM, but there is no video output at all. I put new PRAM batteries in the machine, and everything looks fine otherwise. The ROM card is intact. The ROM card number is 341-0811. The machine is actually a IIfx motherboard in a Mac II case. I don't know anything about the regular Mac II's. Did they have ROM cards? I didn't see the ROM number above listed on other sites that list IIfx ROMs, so it's not possible that the ROM card is from a Mac II, is it? I tried moving the video card to another of the Nubus slots, but no difference. Is it a case that the old video card puts out a signal which is not synced with the display, or is it more likely that the video card is dyfunctional? thanks for your help

