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Crom00
10-27-2008, 06:46 PM
Hi, Have an Amiga 1200 refurbished NTSC motherboard I picked up from Amigakit way back. It's exhibiting weird corrupted graphics onscreen after being on for a few hours.

Other than that quirk that happens maybee 40% of the time it runs well with a MB 1200 25mghzt 68882 chip and 4 megs.
Same thing happens when the card is remioved.

Is there a fix for this?

Here is what happens:
On the WB or games like banshee the sprites become corrupted and get worse over time. If I turn the machine off and do the DROP from one inch high test it works just fine for a while.

Thought it was the roms but I placed the exact roms into another motherboard and that machine is just fine.

Any suggestions?

mikrucio
10-27-2008, 08:03 PM
this is normal. it's overheating. glue a heatsink onto alice. easy fix.

rkauer
10-28-2008, 11:03 PM
Also check the capacitors on the board.