Re: Keypad problem ?
Hi Dominik,toggle quoted messageShow quoted text
Your electronic friend was absolutely right about the "potential" keyboard
I just happened to be thumbing through the: "Astro-Physics GTO KEYPAD
Version v4.12" user manual, and discovered that it confirms this to be perhaps
See page # 63 Troubleshooting:
"The keypad locks up on the Astro-Physics screen and will not advance to the
Now: look at the final "bulleted" possibility, at the top of the next page #
"Corroded circuit board in the keypad"
I suppose, when I first read that, I just assumed this happens from salt
air, for observers near the ocean. Maybe it is more common than we thought.
Strange though: I figured that the entire hand controller is completely
sealed. Would it help to apply a thin bead of Vaseline to the edge of he case,
sealing it before reassembling, so no corrosive air gets inside, or is the
corrosion a natural occurrence caused by solder flux? Perhaps the new ROHS
mandated by Europe will help newer versions.
I would hope that the circuit board has a "conformal coating" applied to
it on both sides, to prevent such corrosion. As for connectors, they should
have gold plated pins and circuit board contacts. Maybe that is the reason for
the limited warranty period.
----- Original Message -----
From: "Dominik Wos" <email@example.com>
Sent: Sunday, April 22, 2007 10:15 AM
Subject: [ap-gto] Re: Keypad problem ?