BS 9000 settings are not permanently saved

[DG0JG]

Hello,

I have a BS 9000 that loses the settings I make using the remote control after I turn off the power. So I press the red button.

BS 9000 actually works without any problems and can also set all parameters unless I turn it off completely. What have I already checked? There is a 3V 3.2V battery on the CPU board. The SRAM on the mainboard is also at 3.2 volts and the crystal oscillates. I have already replaced the MK41T56. According to the schematic, I don’t see any additional memory. Does anyone have an idea where else I can look?

Thanks

DG0JG

 

[Beobuddy]

I would start by using the keyboard to store settings.

[Author]

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