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

[albertofenini]

Hi Tony
Thanks for getting back to me
I have tried few minutes ago after letting the board to dry on a heater all day but
It behaves like yesterday

I have ordered a lcr t7 that should arrive tomorrow and I will be able to check
all the passive components

I would avoid de-soldering the hybrid as this version has the crimped pins and they usually detach from the body

Once I will have checked the components I can try to replace the roms and see what happens

I wanted to power it and see if the hybrid is generating a good ph1 and ph2

Also I would like to check the correctness of Vgg Vss and Vbat

Can I do that or I can fry something at this stage ?

Thanks again and take care