HP 45 Charger`

[Milanomike]

Hi newbie here,

I have had an old HP 45 for years, which stopped working. After reading here, it seemed replacing the 400 uF electrolytic capacitor was a good first thing to do after cleaning the switch. I seemed to recall the display flickering for a bit some time back.

Took cover off the charger unit and noticed the resistor and diode on the side opposite the capacitor had clearly gotten hot. Checking resistor showed it to be open as it has separated from the lead.

So, anyone got a parts list for the charger or know the resistor value. Colors for the stripes are faded but I think I am reading 470 ohms, maybe a 1/2 watt resistor? As long as i'm there, anyone know what diodes I might need.

Sure would like the old 45 working again on my bench. Can't test otherwise as battery pack is long gone.

Thanks for any help here.

Mike