| Click here to select a new forum. |
| I need help with my IIfx |
Posted by: Powerbook550c on 2022-07-21 08:56:38
I recently got a Macintosh IIfx. It wasn't battery damaged thankfully, but nevertheless it does not work. I get a startup chime and the raster screen, where the Mouse-cursor should appear, and eventually the blinking floppy disk, but nothing ever appears :-( It is stuck on that screen forever. When I push the reset button it resets and it gives me a sad mac (with sad-chime) when pushing the interrupt button.
Things I have tried:
Veryfied that the voltages were present and accurate.
I tested every line coming out of the SWIM point to point, that was looking good.
I replaced the SWIM with one from a dead Macintosh LC
I tested the machine with a GGlabs MacSimm.
I was able to verify with the diagnostic mode (https://web.archive.org/web/20190704003154/https://mac68k.info/wiki/display/mac68k/Diagnostic+Mode) that the ram is ok.
I tried pretty much everything I could think of, and I would really like to get this mac back up and running again.
I am thankful for any suggestions on this project. |
Posted by: cheesestraws on 2022-07-21 09:08:38
Does the raster have rounded corners or square ones? |
Posted by: Powerbook550c on 2022-07-21 09:11:12
Square ones. |
Posted by: cheesestraws on 2022-07-21 09:33:28
Are there any NuBus cards in the machine except for the graphics card? |
Posted by: Powerbook550c on 2022-07-21 09:36:11
No, just the Apple graphics card. Tested it in a IIvx, it worked. |
Posted by: Johnnya101 on 2022-07-21 10:00:54
How are the caps? You should probably replace the few electrolytics on there, unless you got lucky and it doesn't have them. They usually only affect power, but you never know.
Also, could it be a RAM issue? |
Posted by: Powerbook550c on 2022-07-21 10:07:05
The caps are all replaced. I tested the ram with the diagnostic mode, and it didn´t give me an error code. The output was something like xxxxxxxx0000*R. The last for digits are the error codes. |
Posted by: pax on 2022-07-21 14:17:11
Perhaps not that helpful, but I had what sounds like the same issue with my IIfx at one point. In my case I had two graphics cards; I removed one and everything started working. So potentially graphics card issues can result in the symptom you're describing. |
Posted by: Powerbook550c on 2022-07-21 14:23:05
That could be a point, but I did test the GPU and it was working fine. |
| 1 |