HP65 Extreme Makeover S/N 1333S07557 - Advice requested

[albertofenini]

Hello everyone,
we received an HP65 (another one, we know ...) that we are in the process of restore completely,
in the next post we will attach some pictures, we have however just began the process of
stripping down the unit.

It is working, except of course for the card reader, but the second digit is dimmed,
it lights up correctly, but it is very faint.
What do you suggest to check :
the five led component
the inductance behind the leds
or it could be a anode/cathode driver problem ?
thanks so much for any advice you would like to share with us !