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dean.psiropoulos(at)veriz
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 Posted: Sun Oct 25, 2009 6:53 pm Post subject: Flakey UPS AT GPS/COM |
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I know there are several folks out there who have UPS AT (now Garmin) Apollo
GX-60/65, SL-30/40 avionics. I've followed the installation instructions
very carefully but I'm still experiencing some issues that seem attributable
to the connector pins on the unit occasionally not making good contact with
the connector/sockets on the tray. My GX-65 has to have a pin grounded in
order for the unit to NOT go into simulation mode. The wonderful
consequence of this DUMB design decision is that unit has been entering SIM
mode occasionally after I turn the avionics on. I can make it stop if I
turn it off and joggle the radio in the tray a little and then turn the unit
on again. I checked the connectors on the back of the tray and they are not
loose and they are installed on the backside of the tray per the
instructions. There don't seem to be any loose pins and none of the wires
are loose, broken or otherwise unattached. I've installed the unit in the
tray with the cam per instructions taking care not to over tighten but to
make sure the cam is as tight as seems possible. I was also getting a COM
radio failure on the same unit but the radio tested out fine, after jiggling
the antenna connector on the back of the tray I stopped getting the failure
but am wondering how long that will last.
Question, is anyone else experiencing this? Is there a cure? Having to
jiggle a $3000.00 piece of equipment back and forth in the tray to make it
work is outrageous. Please advise!
Bob is there any similarity in the connector pin world to the correlary that
a switch will fail sooner if not used (due to the contacts not rubbing over
each other and keeping corrosion at bay)? UPS AT uses DB-15 and DB-30
connectors with crimp on gold plated pins/sockets which I used with tefzel
wire grounded to a forest of tabs. I have a 2 gauge tefzel wire from the
tabs to the battery ground. Please advise.
Thanks all....
Dean Psiropoulos
N197DM RV-6A
Tampa bay area
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dsvs(at)ca.rr.com
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| Posted: Sun Oct 25, 2009 7:43 pm Post subject: Flakey UPS AT GPS/COM |
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Dean,
My Garmin 480 had the same problems. The solution was to push the unit in a
little harder before the cam is turned. The units must seat all the way to
work and the cam can't do that if the unit is not in far enough first.
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longg(at)pjm.com
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| Posted: Mon Oct 26, 2009 7:28 am Post subject: Flakey UPS AT GPS/COM |
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Dean,
The other option you have is to remove the back-plate socket and plug it
in directly. That worked for me. It just makes me reach a bit more to
remove it for updating (SL 60).
Glenn
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rampil
Joined: 04 May 2007
Posts: 870
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| Posted: Tue Oct 27, 2009 5:04 am Post subject: Re: Flakey UPS AT GPS/COM |
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Is that ground signal the only intermittent you have?
You might rework that one pin to wire joint on the back side of the connector.
Does pulling the unit straight forward break the connection? It might be
a faulty pin or poorly captured one in the connector body.
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