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