Troubleshooting Buzzing Sound from Power Converter in Camping Trailer

Updated 10/06/2025 | Published 07/29/2020

Products Featured in This Question

Go Power RV Converter and Smart Battery Charger - 12V - 45 Amp

(119)

$191.99

Question:

I have a 2012 jayco whitehawk that we purchased a month ago. Last weekend we had it out for the first time. On night 2, I heard a buzzing or electrical sound coming from under the sink area. Low and behold, i found the fuse box. I removed the panel to find the fan not spinning and a buzzing sound from the same area. Is this normal or is the part failing. Can you guide me to the part i may need if it is failing and any other upgraded options if that would be in my best interest. Thank you

asked by: Greg B

Expert Reply:

That area where the fan is and buzzing sound you referenced is your power converter. That is what converts the 120v AC shore power into the 12v DC power for your lights, fans, etc., and charges/maintains your battery.

To replace that converter with a compatible upgrade unit, you will need to get some more information off the unit. There should be a brand and model number as all are not created equal. If you want to replace the unit with a Go Power RV Converter and Smart Battery Charger - 12V - 45 Amp # 34266168 which will work.

expert reply by: Jason S

click to enlarge

Steve O.

10/3/2025

Hey Jason, the picture in your post is the converter I have, do they make a direct swap for that model for the converter/charger where I don’t have to swap out the whole panel? Lithium charging would be great too

Jesse M.

10/3/2025

@SteveO Hey Steve is there a sticker with a part number or model number on your converter? That will be the best way to track down replacements. Let me know.

Steve

10/3/2025

@JesseM it’s a PD4045KA.

Jesse M.

10/6/2025

@Steve There is a replacement converter section for the PD4045KA. You can use the following: - Replacement Converter Section for Progressive Dynamics Inteli-Power 4000 Series 45 Amp Power Center # D4045CSV This has a switch that allows charging of lithium batteries.