[Kenwood] R-5000 displays dots

Wed, 26 Jun 2002 15:38:51 -0400

If it's a nut-and-bolt arrangement, and you have a little vertical clearance
on the nut side, check out some Concentric nuts. They have a nylon ring
embedded in the end of the nut, into which you cut threads when you force the
screw through. They work very well on constantly-vibrating vehicles, in my
experience. They are, however, a "tighten-once" device - you won't get nearly
the hold out of them if you attempt to use them a second time...

Terry

On Wed, 26 Jun 2002 13:17:14 -0600 William R Colbert <[email protected]> wrote:

Hi Gary - well, I recommend the star washers, they don't 
really cut thru the copper but do cut thru that green paint
they tend to paint the boards with which needs to be
penetrated for a good ground.    You could use lock-tite
but again there is a possibility that it could travel the threads
onto the board and give an insulation-no ground  problem
again.  Try the washers first and if that is not sufficient,
then the locktite.  I think they use the type that have the
serated points inside the ring - get the ones that have the
serated points on the outside.  I mention that because 
over here, both types are called star washers.  
On the button problem, you might look at the 
back of the problem buttons, and I think 
they make a contact with conductive membrane
like in a tv remote control or calculator, and if so, use
some de-natured alcohol and a q-tip to clean that 
contact surface.  Over time, whatever is in the air
or on the fingers (oil) will make its way there in
minute amounts and causes some intermittent contacts.
When you use the alcohol, it removes the culprit while
immediately drying with no residue - hence the 
recommendation of the de-natured type.  

73 and hope that helps a bit.

Ray
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