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Old 02-24-2015, 07:30 PM   #1
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Precept Converter Hum

On our last couple of outings, I've noticed when lying in bed above the electric converter and shore power input in the basement, a slight electrical hum underneath the rig.

Has anyone else with a Precept 31UL noticed such?

I called Jayco today and they said the hum is from the converter and is normal, nothing to worry about.

What do you think?

Thank you,

McGarrett
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Old 02-24-2015, 07:53 PM   #2
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Could also be a slight hum from the transfer switch. Had that in our SENECA, no biggie unless it keeps you awake.
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Old 02-26-2015, 02:18 PM   #3
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I don't hear a hum at all. But my transfer switch doesn't work. Part ordered.

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Old 03-01-2015, 09:15 AM   #4
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Have the same hum. I am not sure but I believe it wasn't there when we picked up the rig from the dealer in Jan '15. I have the feeling it started 2 weeks later.

We also own a trailer here in Europe and it also has this converter hum. I suppose it's okay as long as it doesn't keep you awake, indeed.
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Old 03-02-2015, 10:20 PM   #5
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We just picked up our new 2015 31ul on Friday , we have the same hum in the bedroom too. When we first got home and pluged it into power the hum starts out as a high pitch hum that drives our dogs crazy , after about an hour or so it turns into a softer hum that does not seem to bother the dogs but it does bug me.
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Old 03-03-2015, 06:46 AM   #6
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We've had our 31UL for 5 months and have only had it out one night(it's in storage for the winter). I don't recal a hum when we went out but I'll be on the lookout this spring when we hit the road. I'm sure if I do hear it it will drive me crazy and I won't be able to get the sound out if my mind ��
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Old 03-06-2015, 09:15 AM   #7
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My Transfer switch doesn't hum...because it just took a giant crap.
Jayco is overnighting me a new one and paying to have a mobile guy come and install it. Unit is dead as a doornail sitting in the driveway.
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Old 03-06-2015, 12:25 PM   #8
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Quote:
Originally Posted by Hahndavid1 View Post
We just picked up our new 2015 31ul on Friday , we have the same hum in the bedroom too. When we first got home and pluged it into power the hum starts out as a high pitch hum that drives our dogs crazy , after about an hour or so it turns into a softer hum that does not seem to bother the dogs but it does bug me.
My converter was bad within the first outing on my current unit. Under load in the charge and high charge state it would let off a high pitch squeal until it went back to float.

The hum could be normal in the transformers, but a squeal under load is not and should be replaced under warranty.
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