On Jul 2, 7:00 pm, Andy Burns wrote:
Jim K wrote:
do laptop chargers "sense" and adjust their output somehow?? meaning I
can't actually say 100% it's the charger that's shagged & just acquire
a new one...?

Is it one of the Dell ones with a pin inside the barrel? Even then I
think the 3rd connection is for the laptop to sense the charger, not
vice-versa.

yup - the stated 19.4v is presented between the outer and inner
surfaces of the barrel part.
the central pin is the third data connector i believe (now ;))
that measures -12v when measured from the inner (19.4v) part of the
barrel

anyone know if it's correct like that? if so its the laptop end that's
at fault...

Jim K