Electrical Buzzing in Converter

[Mntbiker]

Looking for some help trouble shooting my issue. I have a 2010 Jay Flight 24RKS. When plugged into shore power, i have an electrical buzzing coming from the converter panel. I have checked for loose grounds on the panel. I can get the buzzing to stop when I turn on at least three of the overhead lights (all are LED). It doesn't matter which three I turn on, it stops. I turn off the breaker on the 120V side that runs the light circuit and the buzzing stops. I have tried removing the fuse on the 12V side for the lights, and the buzzing continues…although the pitch changes somewhat. I thought maybe the cooling fan may be stuck. I unplugged the fan from the circuit board and the buzzing continues. There is no buzzing when using battery power. Not sure why it would stop with three or more lights turned on…especially any combination of three.
Don't want to drag the trailer to the dealer to trouble shoot. Any suggestions are appreciated. Thanks for your help.

[BuddyRay]

I suspect you will need to replace that Converter. Many modern converters are solid state. They lower voltage by turning the current on and off very quickly then feeding it into a large capacitor (acts like a small battery) to smooth the current out. These capacitors can start to break down and vibrate with the on/off current flow.
The frequency of the on/off pulses change with load which is probably why it seems to stop when you turn a load on.


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[norty1]

A call to the Converter manufacturer may clear up the why question. If the unit is in warranty, the dealer will have to be involved.
Many converter makers have a exchange program for re-built units but that would be on your pocket. They are not expensive.

[Mntbiker]

BuddyRay and norty1…..Thanks for your responses. Makes sense. Unfortunately, the unit is out of warranty. Looking now for replacement.

Have a GREAT DAY!!

[norty1]

Originally Posted by Mntbiker

BuddyRay and norty1…..Thanks for your responses. Makes sense. Unfortunately, the unit is out of warranty. Looking now for replacement.

Have a GREAT DAY!!

Progressive Dynamics has a program where you can exchange your for a re-built one. I have several friends who have used it. You can also get them o Amazon. Check with them online to see about it.

RV and Marine Power Converters and Chargers