HP34C Repair

[javico]

(11-08-2018 06:03 PM)Zaphod Wrote:  

(11-08-2018 05:38 PM)javico Wrote:  How can I check if the charger is defective? with a multimeter?

Yeah, select AC volts (a range to accommodate 9VAC - say 20V etc on a manual range meter) , plug it in and stick your test leads on the contacts , you won’t necessarily get exactly 9V because you’re not loading it... so it will undoubtedly read slightly more than 9VAC

Thanks, Zaphod!! Yes, so I've got myself a multimeter on Amazon and followed your instructions. I'm reading 8.9VAC connecting the terminals, so I would assume the charger is OK?. What I don't understand is that I've got the HP82090B European charger which says "output 6VAC, 1.3 VA". Sorry for my ignorance, but why am I reading 8.8VAC if the adapter has an output of 6VAC?