A replacement board for the 2 DRAM chips on C64 and C64c boards 250466 and 250469 is now available.
This little board replaces the two 64k x 4 bits DRAM ICs with a single static RAM IC. Accordingly it consumes only a trickle amount of power, about 5mA. It also acts as a VSP bug fixer.
Advanced skills in electronics and solder and desolder techniques required - Please check images and instructions listed for further information