22 Sep
2010
22 Sep
'10
11:13 a.m.
Well, I'm not sure I'd want something that wasn't sealed anyway, just so dirt
Agreed. There are some high-impedance nodes in the input stages of a DMM,
and leakage on the PCB (due to dirt) will cause all sorts of problems.
The Fluke 85 is well-sealead (rubber gasket round the case, O-ring round
the input connector assmebly, etc). I can;t fault it there
couldn't get in there. There's a little rubber
strip around the battery cover
on one of my meters, for instance. I just wonder if you could chop the part of
the case that sits over the battery and somehow turn it into a removable
battery cover...
Possibly. Although I think modifying the screws (fitting tapped bushes,
etc) is preferable.
I could probably pass the display off as a
silhouette iamge of a
munntain range :-).
Ahh, so the black portion is 'jagged' then? From your original description it
sounded like a regular rectangular section
corresponding to the lower half of
the display, which did seem more like a driver-type fault. Something more
irregular does seem more like a broken LCD :-(
Especially as it's still there with the LCB removed from the instrument :-)
Unless I can get the right part somehow -- and
Fluke can no longer supply
it -- I am stuck.
Maybe try the local Freecycle list? Given the population density around you, I
expect there's a healthy nearby list, and such a meter's the sort of thing
someone might have lurking in their loft that they'd completely forgotten
about :-)