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Old 01-17-2016, 03:02 PM   #11
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Whow it's occurring in a completely different rig like yours? Are you able to disable, turn off, the inverter and use the accessory position on the key selector to test the coach radio just using the vehicle starting battery for the power source?
Does it on accessory position and main battery switch off on chassis. I do not know if converter has power on or not in that mode. I do not have an inverter.
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Old 01-17-2016, 03:15 PM   #12
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I'm not sure but you need to eliminate every noise source and test using only battery to power the radio in the coach. This seems to be a systemic problem since the same issue is on a rig similar to yours. Just not sure if coach is the issue i.e. (grounding, electronics,etc.) like others have said or the actual radio but having two rigs with the same issue may have eliminated the radio as the problem. Good luck, let us know what you find out what the solution is for sure.
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Old 01-17-2016, 09:49 PM   #13
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Again I would lean toward a ground loop problem. A ground loop isolator can be picked up a Best Buy for around $15.00.

Easy install on the RCA connectors.

There are some old threads on this subject and most have lead to the ground problem.
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Old 01-18-2016, 08:14 AM   #14
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Again I would lean toward a ground loop problem. A ground loop isolator can be picked up a Best Buy for around $15.00.

Easy install on the RCA connectors.

There are some old threads on this subject and most have lead to the ground problem.
X2

It's not the radio. Take it to a good auto audio shop in your area. Have your dealer cry "uncle" to them and get it fixed correctly.*

Audiophiles are a unique breed. Your dealer sells RV's, not sound systems. Because you have multiple components connected into your. "system", there are opportunities for ground loop interference.
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Old 01-18-2016, 02:39 PM   #15
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I agree that you appear to have a ground loop issue however the comment that both radios were bench tested (out of the coach) and had the same problem bothers me. Since you got it that way from the dealer I also agree it's better to have them correct for you at no expense to you and not jeopardize your warranty. You mentioned that filters have been tried so these may be the isolators discussed earlier. The only thing you could really do without jeopardizing your warranty would be to unplug various devices to see if you can find out which one (or more) are causing the issue. The converter may very well fix the problem but if not (as also mentioned earlier) the audio specialist would be a good option. Best of luck to an early solution. FYI: I am a techie by trade and have always enjoyed working on broadcast noise issues that others give up on. Just don't give up looking for the cause of the unwanted noise and you'll eventually find the source.
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Old 01-18-2016, 03:23 PM   #16
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New information today was that when radios were bench tested Dec 9 power and ground were isolated but hooked up to coach antenna and did not try another antenna that was also isolated. They would of been able to kill power to coach and the converter. I do not know if radios did not work in both modes, seems like it as I was told flat that radios had the problem on bench. Now Jan 18th they are looking at antenna? I believe converter has been tried and did not work. I think isolators were tried as well and that I have to let them handle it due to the warranty. Coming up on six weeks in the shop in two days, about half that time waiting for parts to try.
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Old 01-18-2016, 08:03 PM   #17
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Let me say that your dealer sells RV's, not sound systems. Does six weeks and no results seem reasonable to you, if so hope this resolves well for you.
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Old 01-19-2016, 09:58 AM   #18
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Word is today that converter fixed it.

Came in yesterday. I have not picked it up yet so we will see.
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Old 01-19-2016, 10:10 AM   #19
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Hurrah for sure!! Congratulations and enjoy your 2016 camping season.
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Old 01-23-2016, 02:00 PM   #20
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Next thing to try from Forest River would be to do away with "T" that ties the chassis and coach radios to same antenna and go with separate antennas. That is the only connection between the two radios.
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