Fluke 73 probe socket
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From: Michael Kerby on 10 Apr 2010 10:03 I have a Fluke 73 multimeter that looks like a 9v battery leaked at some stage and the probe sockets have oxidized. I cannot get an accurate reading anymore with known good test leads. Is there anything I can do to fix this? Especially a cheap fix.
From: William Sommerwerck on 10 Apr 2010 10:10 Have you cleaned the contacts? Start with household ammonia (followed by an isopropyl flush). Ammonia will dissolve the alkaline shmutz from the battery.
From: N_Cook on 10 Apr 2010 10:12 Michael Kerby <user511(a)planetweb.com> wrote in message news:4bc0853d$0$5233$c3e8da3(a)news.astraweb.com... > I have a Fluke 73 multimeter that looks like a 9v battery leaked at > some stage and the probe sockets have oxidized. I cannot get an > accurate reading anymore with known good test leads. Is there > anything I can do to fix this? Especially a cheap fix. > Cut the plugs off and solder directly onto the board, no ammeter function though. Or make up some sort of extender with in-line sockets and again soldered directly into the innards. Are you sure it is socket problems and not switch problem ? -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://diverse.4mg.com/index.htm
From: Michael Kerby on 10 Apr 2010 12:20 @ N_Cook >Cut the plugs off and solder directly onto the board, no ammeter >function though. Or make up some sort of extender with in-line >sockets and again soldered directly into the innards. >Are you sure it is socket problems and not switch problem ? I've cleaned up the switch with alcohol. Only the area around the leads is really affected. I have cleaned and resoldered the whole area as it was all dried out one socket in particular is really intermittent. Still showing around 2. something ohms shorted if I bypass the sockets altogether but its unusable in its current form. Of course on another meter the leads are perfect. Once I clean up this socket I'll fix up any other problems if they exist including why there is still a bit of resistance there. I might just jumper across on the PCB and check it out as its hard to hold probes there and read the display at the same time.
From: Jim Yanik on 10 Apr 2010 12:48
"William Sommerwerck" <grizzledgeezer(a)comcast.net> wrote in news:hpq0sg$1c7$1(a)news.eternal-september.org: > Have you cleaned the contacts? Start with household ammonia (followed > by an isopropyl flush). Ammonia will dissolve the alkaline shmutz from > the battery. > > common household vinegar works fine to neutralize the alkaline electrolyte. Then a water rinse. -- Jim Yanik jyanik at localnet dot com |