I am having issues with two motherboards.
One is an A3000. The screen jumps around in interlace modes. non-interlace modes work fine. The same symptoms exist whether or not I use the built in flicker fixer.
Is this a capacitor issue? or other. I find it interesting that all interlace modes are affected but non-interlace modes are ok.
Does anyone outthere still do motherboard repair???
I had something happen very recently, interlaced screens were slightly corrupted and non-interlaced screens were perfect. It did progress to a dead system fairly quickly (within a few months). I haven't tried repairing this yet, but it isn't your amber.
I'm not a technician (did repair work 30+ year ago though), just a hobbiest that is being forced into repairs for myself because all Amiga 3000's I come in contact with are failing.
If I had to venture a uneducated guess, I would say it is a cap or perhaps battery damage on a socket.
Don't mount a battery to the motherboard, I'm trying to figure the best route in the 3000 battery thread.
Perhaps, if I can master the broken 3k's, I will help others. This is a big "IF" because I don't have any time to get these fixed as it is.
If we could find a few really good techs that could fix these, particularly in the US. It would be a great option. I don't know of anyone though...
