Humming coming from the breaker panel area only when the motorhome is running

[stixx colby]

I have a 1993 Thor motor home and we are dry camping and when I start the motor home up and its ldileing I get a loud humming noise coming from the breaker box area thinking it's the converter but not sure everything is working fine only hear it when vehicle is running any ideas ? And how do you go about checking the converter? New to this Rving stuff much appreciated..

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[1l243]

Cooling fan?

[stixx colby]

Originally Posted by 1l243

Cooling fan?

I am not sure yet it just started doing it

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[stixx colby]

Originally Posted by 1l243

Cooling fan?

Yes I think that is it comes on and off now thanks 1234 much appreciated

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