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Old 10-14-2007, 11:25 PM   #1
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1999 25' Safari
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Constant Hum

I have a 1984 Excella 31'. I think its normal, but there is a constant hum from what I think is either the inverter or battery charger. Does this ever turn off or do I just get used to hearing it in the background?

Thanks,
Ben
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Old 10-14-2007, 11:30 PM   #2
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It's the convertor which is also the battery charger as well. It is the trademark of the Univolt. It is off when you are not hooked to city power. Upgrading to a modern 3 stage convertor is a very popular upgrade.
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Old 10-15-2007, 01:37 AM   #3
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Quote:
Originally Posted by benheschen
I have a 1984 Excella 31'. I think its normal, but there is a constant hum from what I think is either the inverter or battery charger. Does this ever turn off or do I just get used to hearing it in the background?

Thanks,
Ben
Hi Ben, If you really want to get rid of the hum you will need to replace your old tech univolt converter. The Intellipower is a very popular charger. Zero noise from it. Orrr... you could boon dock all the time !

The best choice would be to get something with 3 stage charging.

Do a search on 3 stage chargers for starters. Lots of info here on that subject.
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Old 10-15-2007, 01:40 AM   #4
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1. Turn the stereo up
2. Turn on a fan
3. Turn on the A/C
4. Do as suggested in the posts above

It doesn't hurt anything if you can live with the hum.
Dave
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Old 10-20-2007, 04:42 PM   #5
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even though all these solid state inverters, converters (battery chargers), florecent fixtures have no moving parts, they do have oscilators circuits that hummmmmm, and if you are sensative to that particular operating frequency (I am to 60hz hummmm) then you are up the creek, as they say, the bigger problem is does your TV seeing that poorly designed circuit interference.

good luck
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Old 11-05-2007, 10:44 AM   #6
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I have a 1988 airstream 345 RV. The converter (30amp) has started clicking and the lights dim when it clicks. I am thinking of changing it out to an intelliverter but upgrading to a 50 amp so I can run both ACs off shore power. Does this sound reasonable to increase the amperage of the converter? Any ideas what could be causing the clicking?
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Old 11-05-2007, 10:45 AM   #7
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converter

Quote:
Originally Posted by wpapke
I have a 1988 airstream 345 RV. The converter (30amp) has started clicking and the lights dim when it clicks. I am thinking of changing it out to an intelliverter but upgrading to a 50 amp so I can run both ACs off shore power. Does this sound reasonable to increase the amperage of the converter? Any ideas what could be causing the clicking?
er, make that an intellipower.
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Old 11-05-2007, 12:29 PM   #8
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I changed all the fuses and found that the humming was greatly reduced....
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Old 11-05-2007, 01:10 PM   #9
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The only time ours hums enough to be troubling is bedtime - my head lays just over top it. Luckily - the PO had a switch installed that shuts off the power to the Univolt and any 12 volt outlets - but leaves all the remaining a.c. power on. So overnight you don't hear the noise - just remember to flip the switch on in the morning.
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