Samsung ME21F707MJT/AA-00 microwave Parts

On your Samsung microwave (including model ME21F707MJT), the model number is typically printed on the rating label on the back or bottom of the unit; on over-the-range microwave/hood combos, it can also be on the door frame area. For the exact label locations and what to record, use the owner's manual.

Where to look first (fastest checks)

• Open the door and check the oven frame/door jamb area for a rating label.
• Check the back panel of the microwave/hood combo.
• Look on the bottom surface (you may need a flashlight).
• If you see multiple codes, use the one labeled MODEL (not “S/N” or “SERIAL”).

What to write down (and why)

Record these items exactly as shown on the label:

• Model number
• Serial number
• Date purchased (if available)
• Purchased from (optional)

Why it matters

We use the model number to match the correct Samsung parts diagrams and ensure you get compatible replacement parts (for example, a door interlock switch or control board can vary by revision).

Model vs. serial number (quick guide)

Label item	What it does	Example format
Model number	Identifies the exact product design for parts lookup	ME21F707MJT
Serial number	Identifies your specific unit	Letters and numbers

Tips to avoid common mix-ups

• Copy the model number character-for-character (including slashes or suffixes if shown).
• If the label is worn, take a clear photo and zoom in.
• Use the model number when browsing parts; use the serial number for unit identification.

Last updated: February 2026

For a Samsung ME21F707MJT over-the-range microwave/hood combo, most repairs typically cost $150 to $400 total (parts plus labor). Simple fixes like a door switch or thermostat are usually on the low end; heating-system repairs (magnetron, capacitor, transformer) are usually higher.

What drives the repair price?

Repair cost mainly depends on which system failed and how much disassembly is required.

• Heating circuit parts (magnetron, capacitor, transformer, diode) usually cost more
• Door interlock issues can be moderate but are often straightforward
• Control board problems can be expensive and may not be cost-effective
• Vent fan or turntable issues vary based on motor access
• Service call and labor time often make up a large portion of the total

Typical part-cost ranges for this model

Below are common parts we see involved in repairs for ME21F707MJT, using examples from the parts list for this model.

Repair area	Example part	Typical parts cost	Typical total repair cost
Not heating	Microwave magnetron OM75P-21-ESGN	$150 to $250	$250 to $500
Not heating	Microwave high-voltage diode DE91-70063D	$15 to $50	$150 to $300
No power or dead display	Microwave electronic control board DE92-03559B	$150 to $300	$300 to $600
Runs with door open or won’t start	Microwave door interlock switch 3405-001034	$15 to $60	$150 to $300

Safety note (important for pricing)

Microwave high-voltage components can retain a dangerous charge even when unplugged. If the issue points to the heating circuit (magnetron, capacitor, transformer, diode), we recommend using a qualified technician; that labor is a big reason these repairs cost more.

How to decide: repair or replace

A quick way to decide is to compare the estimate to the microwave’s age and the type of failure.

• Repair makes sense when it’s a door switch, thermostat, or venting issue
• Replace may make sense when the control board and multiple parts are involved
• If it’s not heating, check troubleshooting steps first to avoid unnecessary parts

For model-specific troubleshooting and maintenance (filters, light replacement, and basic checks), use the owner's manual. You can also review our DIY guidance in why is my microwave not heating.

Why it matters

Over-the-range microwaves combine cooking and ventilation, so a single symptom (like “runs but doesn’t heat”) can involve multiple systems. Identifying the system first helps keep the repair cost predictable.

Last updated: February 2026

A Samsung over-the-range microwave like model ME21F707MJT includes a cooking cavity, door and safety interlocks, a turntable system (glass tray and motor), a control board and keypad, and a high-voltage heating system (magnetron, capacitor, diode, transformer). For the complete component list and included accessories, use the owner's manual.

Main microwave parts (what they do)

• Cooking cavity: The metal box where food heats.
• Door and seals: Keep microwave energy contained; the door must close squarely.
• Door interlock system: Safety switches and supports that prevent operation with the door open.
• Turntable system: Glass tray, roller ring, and a motor that rotates food for even heating.
• Control system: Electronic control board, display, and keypad that run cook cycles.
• High-voltage system: Creates the energy that powers heating (magnetron plus supporting components).
• Ventilation and cooling: Cooling fan and vent fan move air to protect components and vent the cooktop.

Common ME21F707MJT parts customers replace

These are examples of parts we commonly see involved in “won’t heat,” “won’t start,” or door-related issues:

Symptom	Parts often involved	Example part on this model page
Runs but does not heat	Magnetron, high-voltage diode, capacitor, transformer	Microwave magnetron OM75P-21-ESGN
Won’t start or stops when door moves	Door interlock switch/support	Microwave door interlock switch 3405-001034
Loud or no airflow	Cooling fan motor, vent fan motor assembly	Microwave cooling fan motor DE31-00045B

Why it matters

Knowing the major assemblies helps you troubleshoot safely and order the right replacement part the first time. For example, a “no heat” complaint usually points to the high-voltage system, while a “won’t run” complaint often points to the door interlock circuit.

Safety notes we follow before any repair

• Unplug the microwave before removing any panels.
• Do not remove the outer cabinet for DIY repair; high-voltage components can store a dangerous charge.
• If the door, hinges, or seals are damaged, stop using the microwave until it is serviced.

Last updated: February 2026

To remove the vent grille (top vent) on your Samsung ME21F707MJT microwave/hood combo, disconnect power, open the door, remove the vent grille mounting screws (the 2 middle screws), then slide the grille to the left and pull it straight out. Follow the sequence in the owner's manual.

Steps to remove the vent grille

• Unplug the microwave or switch off the breaker.
• Open the door to access the grille fasteners.
• Remove the vent grille mounting screws (2 middle screws).
• Slide the vent grille to the left.
• Pull the vent grille straight out to release it.
• If equipped, remove the charcoal filter after the grille is off.

What you can do once the grille is off

With the vent grille removed, you can access items commonly serviced from the top-front area.

What you’re doing	Grille must come off?	Typical next step
Replace oven light	Yes	Remove the lamp cover screw, then pull the bulb out gently.
Replace charcoal filter (recirculating)	Yes	Push the hook, remove the old filter, then slide the new one in at an angle.
Inspect vent duct area	Yes	Check for grease buildup or obstructions before reinstalling.

Why it matters

Removing the grille using the correct slide direction protects the plastic tabs and keeps the grille seated properly when reinstalled, which helps maintain good airflow and reduces vibration noise.

Safety notes

• Keep power disconnected while the grille is off.
• Support the grille as you pull it out so it does not drop and bend.
• Reinstall the grille fully before operating the hood fan.

Last updated: February 2026