HP35 problem with a calculator, maybe due to a faulty charger

[teenix]

(03-21-2021 10:19 AM)aurelio Wrote:  Thank you Tony, CPU boards swapping was the first thing that came to my mind, but I also thought about the risk, however minimal, of being then with two 35 opened and, even worse, both not working...
Thanks for the advice, I measured the voltage and read, with my 8.5 V multimeter, where it should be from scheme 8.2, but I do not know the accuracy of my instrument and the tolerance allowed.
I measured on test points what I could measure with the multimeter i.e. Vss = 6.49 (expected value 6 V) and Vgg = -12.94 (expected value -12 V), what do you think of these results?

I think they are pretty good.

cheers

Tony