snipped-for-privacy@z11g2000prl.googlegroups.com...
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>
> > > >> I zapped an old Fluke 23 yesterday by inadvertantly applying about
> >> several KV which burnt a 1 Megohm 5% carbon composition resistor which
> >> is in series with an overvoltage MOV type thing with a split in it.
> >> This resistor is connected to the + input.
>
> >> I don't have the service manual or schematic, does anyone know if this
> >> needs to be replaced with a carbon, other resistors are metal film?
>
> > The service manual is here (two parts):
> >
formatting link
> > 23 is the same as the 73.
>
> > Parts list shows it as a "cer" type, that would be ceramic.
>
> > Dave.
>
> I wonder if that is the same substrate as used in fusible resistors often
> used in similar sacrificial applications?
It appears that the fusible resistors are explicitly stated, and this one, R2 is not one of them.