A solar system that's underperforming by even 20% can cost you hundreds of dollars a year at SDG&E rates — and most homeowners don't notice until the bill jumps. TM Electric and Solar repairs residential and commercial solar systems in San Marcos and across North County San Diego, including systems installed by other companies.
Solar repair is electrical work. Tim is a licensed electrician and U.S. Army veteran who has been in the trade since 1986, so he troubleshoots the whole system — panels, inverters, wiring, breakers, and the main panel — not just the part a sales company knows how to swap.
Typical Visit
2-4 hours
Typical Repair
$150 - $2,500
Any Installer
All major brands
Signs Your Solar System Needs Repair
Solar Repair & Troubleshooting Services
We start by measuring what your system actually produces against what it was designed to produce, then find and fix the cause.
- Full production audit against the original design
- String and central inverter diagnostics and error analysis
- Microinverter and optimizer troubleshooting
- Blown fuse, breaker, and disconnect repair
- Wiring, connector, and grounding faults
- Monitoring reconnection and gateway setup
- Panel-level degradation testing
- Post-repair verification of system output
Inverter Repair for Enphase, SolarEdge, Fronius & SMA
The inverter is the most common failure point in a solar system. Whether you have microinverters on every panel, power optimizers, or a single string inverter on the wall, we read the error codes, test the system, and repair or replace the failed component.
- Enphase repair
- SolarEdge repair
- Fronius repair
- SMA repair
Repair or Replace?
Most underperforming systems can be brought back with a targeted repair. If your system is too old or undersized for your needs, we'll tell you honestly whether repair or a new solar installation makes more sense.
Related Services
Solar Panel Installation
Expanding or replacing an older system? We design new solar around your real usage.
Learn moreSolar Battery Storage
Add storage to your repaired system to get more value under NEM 3.0.
Learn moreEmergency Electrician
Burning smell, sparking, or a hot disconnect? Call Tim right away, 24/7.
Learn moreSolar Repair Across North County San Diego
Based at 1175 La Moree Road in San Marcos, we repair solar systems throughout San Diego County, including:
- Solar repair in San Marcos
- Solar repair in Escondido
- Solar repair in Vista
- Solar repair in Carlsbad
- Solar repair in Oceanside
- Solar repair in Encinitas
- Solar repair in Poway
Solar Repair FAQs
How much does solar panel repair cost in San Marcos?
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Most solar repairs we handle run between $150 and $2,500, depending on what failed. A monitoring reconnection or blown fuse is on the low end; replacing an out-of-warranty inverter is on the high end. We diagnose the problem first and tell you what it will cost before any work starts.
Do you repair solar systems installed by another company?
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Yes. We repair systems no matter who installed them. We work on Enphase, SolarEdge, Fronius, and SMA equipment.
How do I know if my solar system is underperforming?
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Compare your monitoring app's production to the same month last year, or watch for a jump in your SDG&E bill without a change in usage. Error lights on the inverter, panels showing zero in the app, or monitoring that stopped reporting are all signs to have it checked.
Is my inverter still under warranty?
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Many inverters carry 10 to 25 year manufacturer warranties, depending on the brand and model. If your inverter has failed, check your original paperwork or the manufacturer's website for warranty status before paying for a replacement unit.
How long does a solar repair take?
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Most diagnostics and repairs take two to four hours on site. If a replacement part or warranty unit has to be ordered, we get the system safe and schedule the return visit as soon as the part arrives.
Is a solar system problem ever an emergency?
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Yes. Burning smells, scorch marks, sparking, or a hot disconnect or inverter are fire risks. Turn the system off at the solar disconnect if you can do so safely and call our emergency line right away.
Get Your Solar Producing Again
Tell us what your system is doing and Tim will diagnose it fast — no matter who installed it.