• PiperForum.com is a vibrant community of Piper owners and pilots. Our over 1,500+ active members use Piper Forum to swap technical knowledge, plan meetups and sell planes/parts. We host technical knowledge of general aviation topics and specific topics on J3-Cubs, Cherokees, Comanches, Pacers and more. In addition to an instant community of pilots for you, PiperForum.com is a library of technical topics, airplane builds, images, technical manuals, technical documents and more.

    Access to PiperForum.com is subscription based. Subscriptions are only $49.99/year or $6.99/month to gain access to this great community and unmatched library of Piper knowledge.

    Click Here to Become a Subscribing Member and Access PiperForum.com in Full!

Audio panel issues

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

arkvet

Well-Known Member
Joined
Sep 15, 2014
Messages
2,873
Reaction score
765
A few days ago I pulled an old CD player out of the panel and moved a couple things in the radio stack. Today I finished cleaning up the adjustments and went to check the radios. Having some issues and wanted to describe the symptoms to see if anyone could help me pinpoint things.

First off the CD player was a PSE model. Am/fm / CD player. I pulled the unit, its rack, and all of the wiring harness that I could. I did not remove beyond any splices to avoid disrupting anything else.

Radio check today.

Audio panel is GMA340. Com 1 is GNS530w. Com 2 KT155.

On com 1 hold PTT switch. Headset mutes. Nothing transmits. TX is displayed on 530w screen.

On com 2 everything works normal - RX shows up on 530w screen with PTT pressed.

I was able to get a radio check from the local area to verify my findings.

So all I can gather is that a wire is loose or grounded.

My IA is going to do the inspection and paperwork but obviously I either find this issue and resolve it or have to have him or someone else find it.

From what I've described can anyone shed some advice on where the problem likely resides?
 

Latest posts

Back
Top