RV Electrical Diagnostics & Repair
Careful 12V and 120V fault tracing, converter and inverter repair, battery system service, and shore-power troubleshooting at your site.
RV electrical problems build on each other. A failing converter can cook a battery bank. A corroded shore-power connection can brown out the whole coach. One loose chassis ground can make every light flicker. Chasing these faults takes a multimeter and a careful process, not just swapping parts. A local pro follows the power path from the pedestal through the transfer switch, converter, and panel, out to the affected circuit.
Common on-site repairs include converter and inverter replacement and transfer switch service. Local pros also handle shore-power inlet and cord-end replacement, battery testing and replacement, ground-fault work, and 12V circuit tracing for lights, slides, jacks, and tank sensors. Every repair ends with a written voltage-drop and load test. That way the fix is proven under real demand.
Some faults only show up on shore power at one pedestal, or only under generator load. You cannot repeat those on a shop lot across town. That is exactly why electrical work is best done mobile, right where the problem happens.
Sound familiar?
- Breakers trip at the pedestal or inside the coach
- Lights flicker or dim when appliances start
- Batteries drain overnight or never reach a full charge
- Outlets are dead on one side of the rig
- A burning smell near the panel or shore cord
How the diagnosis works
- Check pedestal voltage, polarity, and ground before connecting
- Test voltage drop across the shore cord, inlet, and transfer switch
- Check converter output and charge profile
- Battery load testing and slow-drain measurement
- 12V fault tracing, one circuit at a time
How the repair typically goes
- Replace heat-damaged shore inlets, cord ends, and lugs
- Replace failed converters with the right rated, profile-matched units
- Service or replace the automatic transfer switch
- Repair chassis grounds and corroded connections
- Load-test the repaired path and write down the readings
Good fit for mobile repair
- Converter, transfer switch, inlet, and battery replacement
- 12V and 120V fault tracing and connection repair
- Reproducing pedestal-specific and load-based faults
When a shop is the honest answer
- Full coach rewiring after a fire or major rodent damage
- Chassis harness repairs that need lift access
- Insurance tear-downs that need body panels removed
Common components and causes
- Converters and inverter/chargers
- Automatic transfer switches
- Shore-power inlets and cord ends
- Deep-cycle and lithium batteries
- Fuses, breakers, and bus bars
- Heat-damaged shore-power connections under long A/C load
- Converter failure from age or a lithium mismatch
- Corrosion at the chassis grounds
- Rodent-damaged wiring in storage
- Undersized park pedestals sagging under summer demand
Safety first
- If you smell burning at the panel or shore cord, unplug shore power at the pedestal. Do not plug back in until it is inspected.
- Never bypass a breaker that keeps tripping. It is opening for a reason.
What affects the price
Every visit starts with diagnosis and a written quote before repair work begins. These factors move the number:
- How long it takes to find the fault
- Parts (converter or inverter class and battery type)
- How hard the wiring is to reach
- Whether repairs need return visits with ordered parts
How much does mobile RV Electrical Repair cost?
Most mobile RV Electrical Repair runs $150 to $700 for most 12V and shore-power faults. On-site labor typically runs $120–$175 per hour, with a service call of $95–$150, credited toward the repair. Simple fixes cost the least. The final price depends on parts, roof or slide access, and your rig make and model. These are rough ranges, not a quote. Every visit starts with an on-site check and a written quote before any work.
- Diagnose and repair a dead circuit or outlet
- $150–$400
- Converter or inverter replacement (parts + labor)
- $350–$900
- Transfer switch or breaker replacement
- $250–$600
- Rewiring or connector repair
- $200–$500
- On-site labor rate
- $120–$175 per hour
- Service call / diagnostic
- $95–$150,credited toward the repair
Want a real number for your rig? Call (830) 402-5300 and tell us what it is doing. You get a written quote before any work begins.
Where this service is available
Related services
- RV Solar Repair
Local pros test and fix RV solar systems, from panels and charge controllers to wiring and batteries. They also install right-sized upgrades at your site.
- RV Generator Repair
Mobile diagnostics for onboard RV generators. Local pros service no-start, surging, shutdown codes, fuel delivery, and output faults right where the rig sits.
- RV A/C & Heating Repair
Mobile diagnosis and repair for rooftop air conditioners, heat pumps, and RV furnaces. Local pros service capacitors, fan motors, control boards, and ignition systems on-site.
Frequently asked questions
Is it safe to keep using my RV with an electrical problem?
It depends on the symptom. Flickering lights or one dead outlet can usually wait for a scheduled visit. Some signs are more serious. A burning smell, a warm shore-power plug, or breakers that keep tripping are warnings. Unplug from the pedestal and stop using those circuits until a local pro finds the fault. Those signs mean heat is building at a bad connection.
How is mobile RV repair priced?
You pay a service-call fee that covers travel and diagnosis. Then you pay for parts and labor on the repair you approve. A local pro gives you the diagnosis and a clear quote before any repair work starts. A pro never works on an open-ended okay. A few things change the price. Those are the part type, how hard the access is, and the size of the repair. Each service page explains this.
How quickly can a local pro get to me?
It depends on a few things. Your spot in the service area matters. So does how busy local pros are and whether your problem is an emergency. A local pro books scheduled visits for a time window and puts emergency calls first by safety. When you call, we take your request and share a real ETA from the pro instead of a blanket promise. We also follow up with you if the schedule changes.
Need rv electrical repair?
Call for honest phone triage, or send a service request and dispatch will follow up with a realistic window.