LG microwave repair
LG Microwave Repair in San Antonio
Diagnosis and repair for LG microwaves in homes, rentals and businesses across San Antonio.
Call or use the form, and we'll offer you the earliest appointment we have.
Two short steps: the appliance, then how to reach you. We'll contact you to arrange the visit.
Independent repair, not a factory service center
TrueFix San Antonio is an independent repair company, not a LG service center. If your microwave is still under the manufacturer's warranty, contact LG first, since warranty work normally has to go through their own service network.
How a Repair Visit Works
Call or Book Online
Tell us the appliance, the brand, the model number if you have it, and what it's doing.
On-Site Diagnosis
A technician finds the fault on site before any price is discussed.
You Approve the Price
You get the price first. If the repair isn't worth it for your appliance, we tell you.
Repair & Test
We make the repair, test the appliance and show you what failed.
LG microwave repair: what to know
LG microwaves include over-the-range, countertop and built-in models, many with an inverter power supply in place of the traditional heavy transformer, and LG's EasyClean interior coating. Because an inverter board steps up the voltage electronically, a no-heat fault on these models can be the board as well as the magnetron. Over-the-range units add a vent fan, grease filters and a cooktop light, and door switches wear on any model that's been slammed for years.
Worth knowing about LG: most LG appliances have a Smart Diagnosis feature that reports a fault through the LG app or a phone held to the panel, and the result is worth passing along when you book.
Common LG microwave failures
These are the failure points to check first on an LG microwave:
- Inverter board failing, causing no heat
- Magnetron failing after years of use
- Door interlock switches wearing out
- Over-the-range vent fan motor weakening
- Turntable motor or coupler breaking
A list like this points the diagnosis in the right direction, but one symptom can come from parts at very different prices, so the cause is confirmed at your home before you get a quote.
How we diagnose an LG microwave
Whatever the brand, on a microwave we check the door interlock switches before anything else — they fail more than any other microwave part and they're also the safety cutoff, so nothing further gets tested until they check out.
One microwave symptom that's easy to misread is a microwave that lights up, turns and hums but leaves food cold, which feels like a total loss but usually means a failed magnetron, high-voltage diode or capacitor, not the control board.
What LG microwave repairs usually involve
Parts for LG are made in volume and stocked by many suppliers. On an LG microwave, the parts that wear out are mostly inexpensive ones: door switches, fuses, turntable motors, and on over-the-range models the vent fan, light and filters.
The bill changes when the fault is the magnetron or the control board. On a newer unit that can still be a sensible repair; on one well into its working life, it's often the point where replacing makes more sense, and you'll hear that at the diagnosis.
Before the visit
The model and serial number are inside the door frame, or on the back or side of the cabinet. A photo of that label is the most useful thing you can send when you book: it tells us which LG platform you have and which parts to bring.
Check the breaker and make sure the door latches firmly. If it runs but doesn't heat, stop using it: the fault is in the high-voltage section, which isn't a do-it-yourself repair.
In San Antonio, keep in mind over-the-range microwaves in builder kitchens that double as the range vent, where the grease filters and exhaust fan become part of the job.
LG Microwave Questions
Answers specific to LG microwaves. For anything else, ask when you book.
Ready to book?
Tell us the appliance, the brand and what it's doing, and we'll offer you the earliest appointment we have.
On inverter models, both the inverter board and the magnetron can cause a no-heat fault, along with a door switch or a thermal cutoff. These parts sit in the high-voltage circuit, which can hold a dangerous charge, so leave the testing to a technician.
Yes. Check that the roller ring and glass tray are seated and that the coupler in the center isn't cracked. If they're fine and it still doesn't turn, the turntable motor under the cavity floor usually needs replacing.
The coating resists stains but can wear or chip from abrasive cleaners or metal utensils. Bare metal edges can arc, so stop using the microwave if you see sparks. Clean it with a damp cloth instead of scouring pads.
No, if it sparks, smells of burning, runs with the door open or has a damaged door. A turntable that doesn't turn or a light that's out is safe to live with until the visit.