If your RV’s lights are dim, the breaker keeps tripping, your batteries won’t hold a charge, or your converter is buzzing, you likely need RV electrical panel and converter repair. At in , , we diagnose and fix these problems same day in most cases. We handle upgrades, replacements, and clean wiring work that actually lasts.
TL;DR
Most RV electrical panel and converter repairs in cost $189 to $795 depending on diagnosis, parts, and labor. Converter swaps usually run $350 to $700 installed. We offer mobile rv repair and same day rv repair. Call to schedule or request a free estimate.
Last updated: March 25, 2026
Clean inspection before we touch a wire. No guesswork.
Why RV electrical panels and converters fail in Florida’s Treasure Coast heat
RV electrical systems work hard in St. Lucie County. You’ve got summer thunderstorms, salt air, and shore power that isn’t always perfect at parks along US‑1 and near Savannas Preserve State Park. Heat cooks cheap converters. Loose neutral connections from bumpy roads on Crosstown Parkway cause nuisance trips. And corrosion sneaks in around the battery bay. We see this daily on rigs in Tradition, St. Lucie West, and down by Jensen Beach.
The weak links are usually undersized OEM converters, tired breakers, or sloppy splices from past “repairs.” If your WFCO, Parallax, or older Magnetek converter is original, there’s a good chance it’s undercharging or overcooking batteries. We’ve replaced 1,200+ converters since 2011, and about 7 out of 10 were failing quietly before owners noticed. Early fix saves batteries. And headaches.
Fast signs you need rv electrical repair on your panel or converter
Here’s the thing. Your RV is talking to you if you pay attention. We look for:
- Lights pulsing or dimming when the fridge or AC kicks on. Breakers warm to the touch, or a burnt smell near the panel. Converter fan runs nonstop, or the unit hums louder than usual. House batteries drop under 12.0V overnight on shore power. 12V items flicker, slides slow, or jacks stutter.
Last week we had a customer in St. Lucie West with a buzzing converter and sulfur smell by the batteries. Voltage was 15.3V. That’s a battery killer. We swapped the converter for a Progressive Dynamics PD9260C, set proper charge profile, and the coach held at 13.6V float like it should. Done in 85 minutes, back on the road by lunch.
Pulled a swollen converter and tested batteries at the same visit.
What your RV electrical panel and converter actually do
Your distribution panel is the brain for 120V AC and 12V DC. The AC side feeds outlets, the microwave, and your air conditioner through breakers. The DC side feeds lights, fans, slides, furnace control board, water pump, and more through fuses. The converter changes 120V AC from shore power or generator into 13.6V DC to run 12V loads and charge your batteries.
If the panel has a loose neutral or a weak breaker, you’ll see random trips or hot spots. If the converter is weak, your batteries sag and 12V gear goes flaky. If the converter overcharges, you smell rotten eggs and see swollen battery cases. None of this gets better on its own. And no, putting in a bigger fuse is not a fix. Big mistake.
According to NFPA 1192 (Standard on Recreational Vehicles) and NFPA 70, the National Electrical Code, terminations must be tight, properly sized, and protected. We follow those books because fires don’t care about shortcuts.
Our rv electrical repair diagnostic process in li6li6/li7li7/li8li8/li9li9/li10li10/SERVICEAREACITYSERVICEAREACITYli11li11/li12li12/li13li13/li14li14/li15li15/li16li16/li17li17/li18li18/li19li19/CITY
How much does RV converter replacement cost in ?
What are the symptoms of a bad RV converter?
Common symptoms are dim or flickering 12V lights, batteries that won’t stay charged on shore power, a loud converter fan or humming, and the rotten egg battery smell. If battery voltage isn’t 13.4 to 13.8V on shore power after 10 minutes, the converter or wiring likely needs attention.
Can you do mobile rv repair at my campground?
Yes. We provide mobile rv repair at parks across St. Lucie County and the Treasure Coast. We work in driveways, storage lots, and campgrounds. Mobile fee is usually $59 to $89 based on distance from . We bring parts for same day rv repair when possible.
Do I need a surge protector in Port St. Lucie?
You should. Storms and low-voltage pedestals are common here. A Progressive Industries EMS or Hughes Power Watchdog will shut down unsafe power and save your converter, AC, and fridge boards. Installed cost is usually $325 to $525 depending on model and hardwire vs plug‑in.
How long does panel and converter troubleshooting take?
Diagnostics take 45 to 75 minutes in most cases. A straightforward converter swap takes 60 to 120 minutes. Full panel rebuilds or messy previous-owner wiring can extend that. We show photos and update pricing before doing anything extra.
Will you set my converter for lithium batteries?
Yes. We install lithium‑friendly converters or set selectable profiles to match your BMS. We typically use Progressive Dynamics models with Li profiles, verify 14.4 to 14.6V bulk as required, and upgrade wiring or fusing if needed. Expect $575 to $1,100 installed depending on battery bank size.
Can a bad breaker cause my AC to trip?
How often should RV battery cables be serviced in Florida?
Once a year. Our humidity and salt air corrode connections. Annual cleaning, torque checks, and dielectric grease prevent hot spots and voltage loss. We offer a yearly electrical service for $169 that covers those checks and a thermal scan.
Do you warranty your electrical work?
We do. Labor warranty is 12 months on panel and converter work. Parts follow manufacturer warranties, typically 1 to 2 years for converters. You also get a 30‑day free recheck. Keep your job packet for easy reference.
Ready for honest, clean electrical work? Call us.
Call for fast scheduling or to request a free estimate. We serve daily with licensed, insured techs. Ask about same day rv repair. Prefer texting? Mention it when you call and we’ll text updates and photos as we work.
Why choose for rv electrical repair in CITYli20li20/li21li21/li22li22/PHONECITYnap##A1 RV Repair
RV repair shop
1961 SW South Macedo Blvd #303, Port St. Lucie, FL 34984
Open now
Monday - Sunday
7 AM–8 PM
Veteran-owned
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RV Repair Port St. Lucie FAQ's.
What kind of mobile RV repair services do you offer in Port St. Lucie?.
–We provide full mobile RV repair services that come straight to your location—whether you’re parked at home, in a campground, or stuck on the side of the road. From AC failures to slide-out issues, our skilled team handles everything on-site so you can avoid the headache of moving your RV.
Do you work on motorhomes, or just trailers?
- We work on both! Whether you’ve got a Class A motorhome, a fifth-wheel trailer, or a travel trailer, we’re equipped to handle the job. Our rv technicians know the ins and outs of every style of rig, and we bring the tools and parts and accessories right to you.
What’s included in your maintenance service?
- Our maintenance service covers the basics and beyond: roof resealing, battery testing, water heater inspections, diagnostics, plumbing checkups—you name it. Regular checkups help rv owners catch small issues before they turn into big, costly ones.
What areas do you specialize in when it comes to repairs?
– We specialize in non-engine RV repairs, meaning we’re your go-to for electrical, plumbing, appliances, HVAC, slide-outs, and interior and exterior improvements. Think of us as your all-in-one pit crew for everything but the engine.
Can you deliver replacement parts if I already know what’s wrong?
– Absolutely! If you know your water pump’s toast or your fridge’s circuit board is fried, we can deliver the part, install it, and make sure it’s working perfectly. We work with trusted suppliers to get the right rv parts quickly. Just keep in mind, YOU requested that part and/or service, if that’s not the problem, don’t hold us accountable.
What does your repair process typically look like?
– Our repair process starts with a quick chat to understand your service needs. Once we’re on-site, we run full diagnostics, walk you through what’s going on, and then make the necessary fixes right then and there. It’s all done without the hassle of a service center visit.