Our junk yards clock has never worked. It's very slow and loses multiple minutes every real minute.
It doesn't matter if the game is on, or off, it loses time.It's frustrating as this is a game that benefits from a real time clock, in attract it has a cuckoo clock every hour, as well as midnight madness mode.
It's sitting next to Congo which also has a midnight madness, so we were imagining both playing each game at the same time and midnight madness going off at the same time... It's unique and fun! (Congo has no issues with keeping time at all)
Ive checked and changed the batteries, including installing a battery pack off the board. Near the batteries the schematic shows a crystal oscillator but it was missing on our game with no sign there was ever one installed, so I bought one and added it in... No change at all.
I notice there's another, much bigger crystal oscillator lower down on the board.
I've ordered a replacement incase it's worth swapping.
What is the difference between the two oscillators? Why was one missing and does it not have any use?
What else can I try?
Pic of the location of the second bigger oscillator.