Hi guys,
Been awhile... When my Amiga 4000 desktop died I sort of dropped off the radar. I never ditched it though and I am hoping to get it working again. I have been looking for the past week for another motherboard without much success. The battery had leaked before I got it off of ebay a few years back and only lasted me a couple of months. Right now if I turn it on it initializes to a solid green screen and then flops back and forth between green and black. I tried testing some of the traces that looked damaged with an ohmmeter just in case the battery acid had eaten through. They tested OK. I have to admit I do not have much experience repairing Amiga motherboards. I have successfully repaired it's baby brother, the AtariST. I was really excited when I first got it and was looking forward to learning AmigaOS. It was a real downer when it crashed. Any ideas?
Any vendors out there still selling A4000 motherboards?
Thanks,
bjjones37
You have the right machine,but buying one with battery damage is always a risk. Its not that its unreliable,it is just that batteries are a serious problem. Sadly its a known problem but people still dont remove the batteries or replace them with the same type batteries.
Capacitors are also a problem on many of these machines.
Its a good sign that your machine shows some life. it may be repairable.
can you put up some pictures of the battery damage-we may be able to advise you on it. You don't mention where you are located.
green screen is usually a sign of chip ram troubles and could be as simple as a tarnished socket,bad chip ram simm or the damage may be traces and or chips.
