Anything X1600 based that is still in use should be mercy killed. Please move on from this platform. All these chips were terrible when they were new, much less TEN YEARS later, and no new chips are available so even with a BGA rework station there is no saving these machines. Even if you find a magical way to 3D print these chips you will kill the junk VRAM on these boards trying to replace it so retire 820-1881 and 820-2054 boards to nearest trash can before they cause you more misery.