Transponder Gremlins
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Join Date: Feb 2009
Location: England
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Well, I finally got around, hopefully, to resolving this problem today, and it would appear the cause was not what I was expecting!
When I removed the encoder I heard something rattling inside, removed the cover and one of the small nuts which holds the pcb to the case had come adrift, when I looked closely at it I could see black deposits on the nut, the type I'd associate with arcing!
So I conclude the random altitude transmissions where a result of said nut shorting out on the pcb. Just hoping the shorting hasn't damaged the electronics
When I removed the encoder I heard something rattling inside, removed the cover and one of the small nuts which holds the pcb to the case had come adrift, when I looked closely at it I could see black deposits on the nut, the type I'd associate with arcing!
So I conclude the random altitude transmissions where a result of said nut shorting out on the pcb. Just hoping the shorting hasn't damaged the electronics
Join Date: Jan 1999
Location: north of barlu
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8130 !
Hi wigglyamp, you are quite right I do have the 8130 for the unit, I checked my stock and it is not a used one but a new item that has become surplus to my requirements.
And I know the item is a genuine one because you supplied it to me.
And I know the item is a genuine one because you supplied it to me.
Join Date: Nov 2007
Location: Too close to EASA
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Well done A&C - we wouldn't want bogus parts being installed 
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I'm glad you could find the cert - since we relocated, heaven knows where we've stored the archives!
.I'm glad you could find the cert - since we relocated, heaven knows where we've stored the archives!
