forgetting the date between power-ups. Whats wrong?
Most likely, your battery– also called the “BatRAM battery” needs to be replaced. When the GS is OFF, the battery supplies power to the clock and its attached 256-byte RAM. This small RAM is where Control Panel settings are ‘remembered’. If, upon power-up, the GS believes the Control Panel settings have been messed up due to a low battery, it will reset the settings to their default (check-marked) positions.