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11-14-2010, 04:21 PM
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#1
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New Member
1971 29' Ambassador
lindale
, Texas
Join Date: Nov 2010
Posts: 2
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Humming sound
I have just completed several minor repairs on our 1971 Airstream. I now can hear a slight humming sound coming from the green DC fuse box when plugged into 120volt plug. It never did this before. We just bought this and we are new to the Airstream community. I appreciate any help with this.
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11-14-2010, 04:24 PM
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#2
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Rivet Master  
1956 22' Flying Cloud
1998 30' Limited
1947 22' Liner
Valley View
, Texas
Join Date: Jan 2006
Posts: 2,877
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I think you are referring to the univolt converter. The hum is normal....you must have fixed it too.
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"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."
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11-14-2010, 04:37 PM
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#3
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New Member
1971 29' Ambassador
lindale
, Texas
Join Date: Nov 2010
Posts: 2
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Humming
It is really loud, I could never sleep with it making that noise. It never did it in the 2 months we"ve owned it. I was trying to light the heater, to no avail. Maybe that is related?
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11-14-2010, 04:54 PM
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#4
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Rivet Master
1983 34' Excella
1967 24' Tradewind
Little Rock
, Arkansas
Join Date: Nov 2006
Posts: 3,173
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Quote:
Originally Posted by Silver Ark
It is really loud, I could never sleep with it making that noise. It never did it in the 2 months we"ve owned it. I was trying to light the heater, to no avail. Maybe that is related?
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Yep, sounds like the Univolt alright. I replaced the working (and humming) Univolt in my Excella with a Progressive Dynamics Inteli-Power. Not only is it a superior converter that won't overcharge the batteries, it is totally silent.
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Vaughan
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11-14-2010, 05:17 PM
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#5
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4 Rivet Member 
Join Date: Oct 2003
Posts: 284
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I have to give My answer , DanB would expect it.
Do You know why the univolt hums.
Because it doesn't know the words.
Sorry had to do it. At first Dan and Dawn thought I was totally serious when I told them I knew why the brakes on their trailer where humming.
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2004 30ft Slide Out with Hensley Arrow hitch. Pulled By 2010 Dodge 2500 Diesel 4x4 Megacab
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09-04-2011, 05:47 PM
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#6
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1 Rivet Member 
1978 Argosy 30
warwick
, Rhode Island
Join Date: Jul 2011
Posts: 10
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Ok how difficult was it to replace. I have a 78. Argosy. Buzz not bad, but univolt not as reliable as I'd like.
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09-04-2011, 05:56 PM
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#7
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Rivet Master
2007 30' Classic
Albuquerque
, New Mexico
Join Date: Nov 2005
Posts: 1,070
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Quick and Easy
Quote:
Originally Posted by vswingfield
Yep, sounds like the Univolt alright. I replaced the working (and humming) Univolt in my Excella with a Progressive Dynamics Inteli-Power. Not only is it a superior converter that won't overcharge the batteries, it is totally silent. |
I have installed these in both my vintage Airstreams. If you aren't comfortable with doing it yourself, it should be a 1 hour labor charge.
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Ken 2007Chevy 2500 HD Duramax/Allison NM Unit WBCCI #8654, Affiliate Four Corners Unit "Those Airstream photos on the internet that fuel your fantasies will always capture the gleam of aluminum, but rarely all the blemishes, and never the smell."
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