As all of us who do hardware repairs know, a multimeter is an essential
piece of test equipment.
Until a couple of days ago, I used a Fluke 85 (original series). It did
what I wanted, there were 2 parts of the design I didn't like, but apart
from that it was great
The 2 thing I didn't like were
1) You have ot dispmantle the meter to change the battery, and it's
assembeled with self-tapping screws going into the plastic case. I don't
know how many insertions they will stand.
2) The most switch used resistive traces on the PCB with a wiping contact
to connect them to an analogue input on the main chip. If that wiper
didn't make contact properly, it sometimes got into the wrong mode. It
owuld even sometimes power itself up (and flatten the battery) when in
the off poosition.
Anyway, I was using this iustrument on Saturday (actualy for testing the
PSU, etc, in an HP2623 graphics terminal) with no problems. I put it away
in my tool drawer. On Sunday I got it out for some other tests and
discovered the display had failed. It's totally black for half the
height, I asusem the liquid crystal material has leaked out (although the
glass is not obviously cracked or broken). AFAIK nothing fell on it in
the tool drawer (there are no really heavy tools in there anyway), it
wasn't dropped, etc. Just one of those things.
Alas Fluke say they can no longer supply the display for this insturment
as a spare part.
Given that I need the standard functions only (including a good
continuity tester!), don't need excessive accuracy, and would like to be
able to fix it if anything goes wrong, does anyone have any
recomendatins? I am not conviced I should buy another Fluke, BTW.
Long shot : Does anyone have a defective original-series Fluke 80 with a
good display (maybe the ASIC has died or something). I would be
interested in buying it.
-tony