Fluke 73 probe socket

[Michael Kerby]

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.

 

[William Sommerwerck]

Have you cleaned the contacts? Start with household ammonia (followed by an
isopropyl flush). Ammonia will dissolve the alkaline shmutz from the
battery.

 

[N_Cook]

Michael Kerby <user511@planetweb.com> wrote in message
news:4bc0853d$0$5233$c3e8da3@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

 

[Michael Kerby]

@ 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.

 

[Jim Yanik]

"William Sommerwerck" <grizzledgeezer@comcast.net> wrote in
news:hpq0sg$1c7$1@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