Dave Cole
Well Known Member
I am seeing a COMM FAILURE on an SL-30. This is on a new installation, new airplane. I read all of the treads on the subject in this forum, and the possible problems were best sumarized by Stein:
1. RS-232 wiring error.
2. COMM wiring error.
3. COMM internal failure.
I have disconnected the RS-232 connections to my EFIS to eliminate that problem, and I have checked the COMM wiring for correct connections with the audio panel.
I still get a COMM FAILURE, starting intermittentaly after several minutes of warmup time during which the COMM frequecy sometimes changes by itself, and the COMM FAILURE message will come and go. Eventuallly the COMM FAILURE message is on continuously.
I am assuming the this is a case of COMM internal failure, unless anyone can add additional insight. Barring that, I am about to the point of sending the unit back to Garmin for repairs. However, I purchased the unit several years ago when I started on my panel, and have forgottten where I got it from (and can't find the receipt).
This leaves me wondering who I can send to for repairs. Any suggestions?
1. RS-232 wiring error.
2. COMM wiring error.
3. COMM internal failure.
I have disconnected the RS-232 connections to my EFIS to eliminate that problem, and I have checked the COMM wiring for correct connections with the audio panel.
I still get a COMM FAILURE, starting intermittentaly after several minutes of warmup time during which the COMM frequecy sometimes changes by itself, and the COMM FAILURE message will come and go. Eventuallly the COMM FAILURE message is on continuously.
I am assuming the this is a case of COMM internal failure, unless anyone can add additional insight. Barring that, I am about to the point of sending the unit back to Garmin for repairs. However, I purchased the unit several years ago when I started on my panel, and have forgottten where I got it from (and can't find the receipt).
This leaves me wondering who I can send to for repairs. Any suggestions?