[Heathkit] DX-60 Problem
Rbethman
rbethman at comcast.net
Tue Mar 14 12:33:19 EST 2006
Hello All,
If you have to go through and tighten them all, give some thought to a
"drop" of Loctite as you work your way through.
This will keep them from working loose. It even prevents loosening in
high vibration.
Just DON'T get it under the lock washer!
Bob - N0DGN
Glen Zook wrote:
>I have found that about 90% of the "screwy" problems
>in boat anchors that I repair for others are caused by
>loose hardware. One of the first things that I do is
>to tighten all of the machine screws, nuts, etc., that
>go through the chassis. Remember that the vast
>majority of grounds are made through these fasteners.
>
>This hardware works loose even if the unit sits in the
>same place year after year. A few months back I
>started developing some intermittent problems in my
>Collins 75S-3A that has been on my main console for
>over 30 years. I found that well over half of the
>screws holding the tube sockets in place, the terminal
>strips in place, and so forth had worked their way
>loose. Since all of the grounds are made through
>these the receiver was acting up. I tightened all of
>them, checked the alignment (was still "right on") and
>returned the receiver to its place on the console.
>
>The same thing in the SB-101 that I had for a while.
>Most of the machine screws that hold the circuit
>boards in place (and make the ground connections) had
>worked loose. Tightened them up and no more problems.
>
>Glen, K9STH
>
>
>--- Harry Vaught <hlv at frozenlady.com> wrote:
>
>I must admit to not having checked grounds in general,
>but I did check the grounds in and around the
>modulator tube.
>
>Glen, K9STH
>
>Web sites
>
>http://home.comcast.net/~k9sth
>http://home.comcast.net/~zcomco
>
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--
Bob - NØDGN
Bob Bethman - NØDGN
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