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Old 08-13-2012, 07:24 PM   #1
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Uber_D's Avatar
Thor Owners Club
Tiffin Owners Club
Join Date: Mar 2011
Location: Madison, AL
Posts: 103
Blog Entries: 13
Feedback in speakers when inverter/charger on

I get a consistent, loud hum in my speakers when inverter or charger is running. I even hear hum in the unit itself as well as faint hum over on the ATS. All the battery connections are good, clean and tight. I have checked all of the grounds on the ATS and inverter. The ATS is brand new (problem there before ATS went in). If inverter/charger is off no hum. It is a Freedom 2000w inverter/charger. I have read that they are pretty junky, yet functional units.

Are there connections inside the unit I can check? Or do I just need to replace it? Or is my hum gremlin coming from somewhere else and it is just magnified when inverter/charger is running?

Also, on a newbie question, I was told to turn the inverter off before I hook up to power or run the genset. But reeading around the board it seems most RV's have a ATS for the inverter too. Is that built into the inverter? I hate the blinkging microwave clock...

Travis & Dawn... and Mary, Elise, Nora, and Alice
2013 Thor Palazzo 36.1
Madison, AL
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Old 08-14-2012, 02:21 AM   #2
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Join Date: Oct 2011
Posts: 1,136
You can try a shielded speaker wire set. Alao Radio Shack can sell you a diode to install at the inverter to suppress the noise. For your inverter question, leave it on
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