📡Microwave

E-12

Samsung · Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave

Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave E-12 Error Fix: Magnetron / Inverter Error

The magnetron or the high-voltage inverter board has failed. Samsung microwaves with inverter technology use a circuit board rather than a traditional transformer to generate the high voltage that powers the magnetron. If the inverter board fails, the magnetron receives no power and the microwave will not heat. The microwave may power on and appear to run (turntable spins, light turns on) but food does not heat. Inverter board or magnetron replacement is a professional repair due to high-voltage components.

critical2 fixes available✨ Free fix available

Quick Answer

Error E-12 on the Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave means: Magnetron / Inverter Error. The top-ranked community fix is “Replace the Inverter Board or Magnetron Assembly” (hard difficulty, ~120 min, DIY cost: $180-$250). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · microwave

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many microwave repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $300-$500.

Other Samsung Models with Error E-12

Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave

microwave · 2 fixes

Other Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave Error Codes

C-d0

Main Board Communication Error

2 fixes

C-d1

Sub-Board Communication Error

Door Sensor Error

Magnetron Overheat

Inverter Board Failure

Touchpad / Key Error

Relay Stuck Closed — Safety Hazard

2 fixes

E-23

Display Board Communication Error

2 fixes

People Also Ask About Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave Error E-12

What does error code E-12 mean on a Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave?

Error code E-12 on the Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave means: Magnetron / Inverter Error. The magnetron or the high-voltage inverter board has failed. Samsung microwaves with inverter technology use a circuit board rather than a traditional transformer to generate the high voltage that powers the magnetron. If the inverter board fails, the magnetron receives no power and the microwave will not heat. The microwave may power on and appear to run (turntable spins, light turns on) but food does not heat. Inverter board or magnetron replacement is a professional repair due to high-voltage components.

How do I fix error code E-12 on my Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave?

The most successful fix is "Replace the Inverter Board or Magnetron Assembly" (hard difficulty, ~120 minutes). Estimated DIY cost: $180-$250. HomeMD has 2 community-ranked fixes for this error.

Is error code E-12 on a Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave serious?

This error is rated critical severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave error E-12 myself?

Yes — the top-ranked community fix ("Replace the Inverter Board or Magnetron Assembly") is rated hard difficulty and takes about 120 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Needle-nose pliers.

How much does it cost to repair Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave error E-12?

DIY cost: $180-$250. Professional repair typically costs $300-$500. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave have?

The Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave has 8 other known error codes, including: C-d0 (Main Board Communication Error), C-d1 (Sub-Board Communication Error), DOOR (Door Sensor Error), E-11 (Magnetron Overheat), E-13 (Inverter Board Failure), and 3 more.

Which other Samsung models have the E-12 error?

Error code E-12 also appears on 1 other Samsung model: Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave have?

The Samsung Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave has 8 other known error codes:

C-d0 — Main Board Communication Error (2 fixes)
C-d1 — Sub-Board Communication Error (2 fixes)
DOOR — Door Sensor Error (2 fixes)
E-11 — Magnetron Overheat (2 fixes)
E-13 — Inverter Board Failure (2 fixes)
E-21 — Touchpad / Key Error (2 fixes)
E-22 — Relay Stuck Closed — Safety Hazard (2 fixes)
E-23 — Display Board Communication Error (2 fixes)

Which other Samsung models have the E-12 error?

Error code E-12 also appears on 1 other Samsung model:

Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave (microwave) · 2 fixes

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