AFG5102/Repairs
Battery Module Replacement
The AFG5102 processor board is equipped with a Renata 175-1 battery module. This module contains a standard CR2032 Lithium coin cell and two 1N4148 diodes. While the original module is potted in resin a simple replacement with a battery holder and two 1N4148 diodes can be fabricated.
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Processor board with water damage and original backup battery module
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Processor board repaired with new backup battery
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Replacement battery and diodes closeup
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Renata 175-1 schematic and pinout