[Premium-Rx] 3030 keypads

[Herschel McCullough]

Al, John, etal. as I see my 2 key pads,  the front printed membrane has
become  " de-laminated "  my words.. away somewhat from the button surface,
and if I rub this face it will for a short time STICK back as it should, and
the button action seems good to fair in feel and proper responses during
this time..  but after a short time the membrane face comes away and then
when you actuate a key / button it typically will take 2 efforts to get the
proper response..  a new key pad I think would make these false conditions
go away.. I would as a personal preference prefer more response or positive
action when a keypad action is iniated. this is just a personal want..
albeit false, in my mind I am making a more positive command request and
report..  this might very well be available as a part of replacing these
pads with new ones that we might order..

John compares the keypads between a 3030 and a 3030a  ..  and true to his
findings, my unit is a 3030a and has the bubbly or mushy pad faces..  my
hour readings indicate on the left unit 4456 and the right unit 7104..  I
often think about disconnecting these meters , during quite times or low
volume, the constant  " Ticking " or pulse action of the meters annoys me
somewhat..but I haven't done it yet..  All of my modules are sealed and
unbroken..  S/Ns between the same modules are not all that close.. not using
my sig generator, but using the same signal source and feeding both units
thru my Stridsberg coupler, all readings are very similar, not a noticeable
or visible difference in meter or audio actions.. Back to the original
problem.. I hung [ Texanise ] suspended the front control panel from the
ceiling and overshifted the operating positions, the receivers both respond,
the audio board or pin and wiring is the area where my problem is.. I
overshifted the control panel both ways and the fault tracked with the right
control section.. I used  # 12  romex conductors to jumper power to the
respective receiver that I was testing..   so I never got into swapping
modules , as you know and I found out, the audio driver board is mounted on
the back of the front control panel.. When I re- assemble this .. I will
swap audio boards, that will pretty much be the final test to isolate the
fault.. I have however looked very close at the brown @$%^ connectors and
each units wiring seems in order..  but I got into the keypad area and now
have 198 parts spewed around that will need re-assembly before I can resume
testing for the original problem..
I followed last weeks keypad discussion with keen interest, so it just
seemed like I was already in that area and partially apart , to just go
ahead and explore this keypad issue, and try and find a solution while I was
at it..

All feedback or other 3030a issues will be greatly welcomed, but this pretty
much concludes my 3030A report till Monday sometime after talking with
someone at Grayhill about replacement keypads.. thanx for the bandwidth
73  mac/mc  w5mc
----- Original Message -----
From: "Al Klase" <skywaves at bw.webex.net>
To: "Herschel McCullough" <w5mc at austin.rr.com>
Cc: <premium-rx at ml.skirrow.org>
Sent: Saturday, June 28, 2003 5:53 AM
Subject: Re: [Premium-Rx] 3030 keypads


> Do we know for sure that it's the keypads causing the
> problem rather than lack of proper de-bouncing in the
> electronics?
>
> Al
>
> Herschel McCullough wrote:
> > The Grayhill web site still shows this style that is used with the 3030
> > ..  some others of you might check it out as well and see what I might [
> > very likely ] be overlooking and lets discuss and decide how to go
> > forward..
> > and then we say goodbye to the " bubbly "  keypads..  one stroke actions
> > will come back to us 3030 drivers..  mac/mc
> >
> > Located 46 Miles due North of the Alamo
> > and 121 Miles due South of the Western White House
> >
> >
> > ------------------------------------------------------------------------
> >
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>
> --
> Al Klase - N3FRQ
> skywaves at bw.webex.net
> Flemington, NJ 08822
> Web Page:  http://www.webex.net/~skywaves/home.htm
>