Hey folks,

Calendar error is either a bad Clock/Calendar chip (VERY unlikely), a bad 32.768khz crystal (likely) or no +5v on the chip when powered up (VERY likely).

The "no +5v" is caused by corrosion on the board from a leaky battery.

Crystal can just be a dead crystal or one killed by a leaking battery.

I've also see that message come from gouged traces on the bottom of the board.

Calendar Error is also known as "Stuck on Green Screen" when starting. Both signify a calendar problem.

Bad Color RAM is one or more bad 8464 (64k x 8) SRAM chips. It can also be a bad 74LS273 on the color outputs, a bad 74LS244 buffer chip, or a bad NEO-G0 chip.

I can fix those problems if you need someone to work on your board. Check my repair logs for more info.

RJ