Posts: 883
Threads: 17
Joined: Feb 2006
The best way to repair 41 battery contacts is with 1/8" (3 mm) brass channel that is available in hobby stores. Cut a 1/4" (6mm) long piece for each terminal and solder over nasty, rotted battery connection points. Repaired in this way, the connector will outlast the remainder of the calculator.
If the connector is really rotted, you'll need to scrape the film off where the long flat sides of the brass meets the connector to be able to solder it in place. You must use a good, temperature controlled soldering iron or you'll destroy the connector.
Posts: 1,322
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Joined: Jul 2005
The photo that Randy sent is a prettier version of what i did. That solid chanel looks like a great improvement over the bendy sheet that i have. You might use conductive paint instead of soldering to a plastic ribbon connector.
I'll email you Marx.