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HP35 problem with a calculator, maybe due to a faulty charger
03-21-2021, 08:20 AM
Post: #8
RE: HP35 problem with a calculator, maybe due to a faulty charger
It does look clean

If you have another 35, maybe you can confirm the CPU board works or doesn't by swapping for a known good one.

Unfortunately, there is a small risk that swapping may damage a good CPU board. If you have a multimeter you can check the power supply rails first to see that they are all good.

The test points are labelled here from Tony Duell...

https://www.hpmuseum.org/cgi-sys/cgiwrap...i?read=385

cheers

Tony
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RE: HP35 problem with a calculator, maybe due to a faulty charger - teenix - 03-21-2021 08:20 AM



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