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October 1960 Electronics World
 Table of Contents
Wax nostalgic about and learn from the history of early electronics. See articles
from
Electronics World, published May 1959
- December 1971. All copyrights hereby acknowledged.
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Ask anyone who has ever
asked me to fix something electrical or electronic and they will tell you my
motto on such things, born of extensive experience, is that the vast majority of
the problems are caused by poor electrical contacts of one form or another. The
culprit can be a dirty or broken connector, a cold or broken solder joint, a
dirty potentiometer (contact between wiper and resistor), etc. I have repaired
everything from ceiling lights, to car starters, to kitchen appliances, to large
screen TVs simply by finding and repairing connections. When possible, I always
do a final cleaning with isopropyl alcohol and then spray with a silicon contact
protector. This Contact Shield product from Channel Master would be a good
choice. I can honestly say I cannot think of a single instance where the
restored connection failed again. Of course sometimes it is not that simple, but
enough that my initial approach to troubleshooting - unless a broken or burnt
component is immediately apparent - is to unplug and inspect connectors (then
plug-unplug-plug to wipe contacts clean), flip switches on-off a few times while
applying various directional forces (left-right, up-down, twisting), tugging on
wires, etc. People's eyes light up in amazement when a sophisticated piece of
equipment starts working after doing so. Then, I meticulously test and clean all
other easily accessible connections. If that doesn't work, the multimeter comes
out and if necessary, the o-scope.
Channel Master Contact Cleaner
 "BEST OF ALL CONTACT SPRAYS"
Channel Master introduces the first triple-action spray!
Channel Master set out to provide a superior cleaner, lubricant, and protector
for electrical contacts. Contact Shield was the result.
To verify our own estimates of the product's effectiveness, Contact Shield was
submitted to a nationally known independent testing laboratory.
This famous testing organization made a thorough study of Contact Shield, as
well as of nine similar products on the market. The above findings demonstrate conclusively
that this new Channel Master product is the most reliable contact spray you can
'buy!
Here's why Contact Shield is best:
• eliminates background and resistance noises
• is safer. Will not ignite, flash, or cause short circuits
• propellant is actually a fire extinguisher
• contains no solvents to attack plastics
• performs at temperatures from - 90°F to + 320°F
CHANNEL MASTER works wonders in sight and sound Ellenville, New York
Posted March 5, 2024
(updated from original post on 12/1/2017)
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