Products > Test Equipment
Fluke 8050A, bad range switch...
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wiss:
If your display is ok, get another 8050 with a rotten LCD!
crusader66:
I would guess that you have probably already cleaned it but if not then definitely clean the switch with contact/tuner cleaner.  A buddy  and I have recently cleaned several meters and scopes with various failure descriptions that only needed switch cleaning.  Just be careful with the cleaner.  A local hardware store sells the contact cleaner next to a can of electrical cleaner that is definitely bad for electronic switches.  Using the correct cleaner, I have used it pretty generously on switches with no bad results.
devotee:
Can anyone identify the manufacturer of the blue P/B switches? I've tried a minimum of IPA and a lot of cycling, but the mechanism is still a bit janky (engineering term), sometimes not latching.
J-R:
I have repaired half a dozen of these with similar switches and in all cases the CRC QD contact cleaner completely fixed the switches. I spray the switch from the top through the pins while working the switch.  I typically take about 5 minutes per switch and just keep spraying a little every 30 seconds or so to keep it wet, all while working the switch back and forth. I seem to recall on close inspection there was some dried up grease/goop in there, which is causing this issue.
devotee:
I wonder if the goop might be some "vintage" dielectric grease? I'd still like to know who made the switches, if anyone will chime in. I've seen similar ones in Mercedes ACC-II climate control modules form 80's era systems.
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