HP-65 1333A04841 restoration it doesn't work anymore ...

[albertofenini]

Hi Tony

(03-18-2022 12:10 AM)teenix Wrote:  A slim chance maybe, but the hybrid casing may not be sealed properly after all these years and moisture got in after washing.

that could definitely be the case, consider that cleaning the card reader and the pcb I have started to
use hot water and vinegar, as it is more efficient and I have not taken into consideration that this may have caused a problem with the sealing of the hybrid,
what are the chances the it will dry and get back to work ?

Faulty power supply caps

these I can try to replace, I also would like to check some voltages and signals,
like Ph1 and Ph2, can I keep the board powered or I'm making things even worst ?

cheers

thanks and take care !!!

Tony