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Has anyone experience Trig Com Radio not working, What comes up on the screen once I turn it on is "Warning Radio not working, and channel is displayed above, then I hit com and display looks normal, with both channels displayed, but no communication either way....Spoke to Icon and they think it's connection behind radio or where the connection goes to in front nose area, My plane is older version ser # 0040

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I had an issue with the trig 21 transponder ASN00024 just before the annual. It appears to have been a loose connection behind the head unit. Work OK now.

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The hardest part with our older versions is getting behind the head unit,,,,Did you have to take off the entire dash and front console? thanks

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Sure did. During the annual. It’s not hard but there is a specific sequence that starts at the glove box and works forward.