[Milsurplus] "Milking The Controls"

[D C Macdonald]

I can't believe the number of modules sent
back to the FAA depot repair shops by
"field techs" where repair consists simply of
running the pots back and forth a few dozen
times to clear off "dead" spots created over
time by deposits of dust or very slight corrosion.

Mac, K2GKK/5



----Original Message Follows----
From: Mike Hardie <mike46 at shaw.ca>
To: milsurplus at mailman.qth.net
Subject: [Milsurplus] "Milking The Controls"
Date: Sat, 30 Oct 2004 15:54:35 -0700

A while ago I got a copy of the generic TEK 'scope trouble shooting manual
off the web, and had read it cover to cover a number of times.  It stresses
"milking" the front controls as one of the first steps for trouble shooting
just about any kind of fault.  Yesterday on start-up the trace on the 465M
was no where to be seen , so "milking the controls" was put into action.
The procedure worked a lot better than the manual indicated - when one of
the multi position levers was moved the trace re-appeared and the 'scope
works normally.  Obviously a dirty or corroded switch.  Good work TEK!

Mike VE7MMH

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