Hello all,
I need some advice on repairing this calculator. I re-built the battery pack (pack works fine in my HP21) and installed it into my 25C and the display shows all zeros "across the board". It does not respond to any keyboard inputs. I swapped the 25C's display with a working HP25 and I get the same response. Any advice would be greatly appreciated. Thank you in advanced.
HP 25C repair advice
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