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Internals



The reed switches for date and time buttons are likely to need replacing. They can be replaced with modern ones. I used switches designated as 1.8x5mm KA-80 SPST-NO.
Reassembly




The reed switches for date and time buttons are likely to need replacing. They can be replaced with modern ones. I used switches designated as 1.8x5mm KA-80 SPST-NO.