[AMRadio] Deoxit

[David Harmon]

Hi Jim......
I've been using the De-Ox-Id from GC for a long time and the intermittent
operation still happens.....but it lasts longer than the Deoxit.


73

David Harmon
K6XYZ
Sperry, OK


-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of w5jo at brightok.net
Sent: Saturday, June 29, 2019 10:06 PM
To: amradio at mailman.qth.net; manualman at juno.com
Subject: Re: [AMRadio] Deoxit

I first began to use Deoxit in the early 90s and it seemed to last, provided
the switch was used in a, somewhat, regular timeframe.  However in the past
two or three years that time frame of use has grown very short.  Not only
that I have noticed, even with use, switches require reapplication after
about 3-6 months.

I  have and SX-42 that I acquired about a year back that had been in a
decent climate of an attic from the mid 1980s until just last year.  The set
gathered a layer of somewhat oily dust that is difficult to remove and it
was on all the switch contacts..  I carefully applied Deoxit to the contacts
and after replacing all the necessary components it worked very well. 
Included in this work was treatment of the tube sockets and tube pins. 
After about 3 months problems began to resurface with the switches and a
couple of the tube sockets so I reapplied Deoxit.

This application did not last  3 months.  So I searched around for something
else and discovered a brand of cleaner called De-Ox-Id made for and
distributed by GC Electronics.  It contains a form of Naphtha, Heptane and a
bit of Mineral oil with a carbon dioxide propellant.  I put it on sparingly
by spraying a bit in a small container and using a very small brush to paint
it on as I did the Deoxit and receiver has not missed a lick.  It has been
nearly 6 months and there is no indication that I will have to reapply.  It
seems to remove the substance on the wipers and rotors of the switches and I
am happy with the results so far.

This caused me to ask the initial question and from what has been posted so
far, I can't help but wonder if there was a minor change in the Deoxit 
formula.   Deoxit now says to use D5 followed by another of their chemicals 
for the long term. I don't recall at the moment what the second chemical is,
but if De-Ox-Id continues to work as it has thus far, I won't have to buy
two different cans of chemical.

Jim
W5JO




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