The short answer
On the Black Decker EM microwave an oven that runs without heating is usually a high-voltage component inside the cabinet rather than anything you can reach. The EM table covers several distinct stems, so the sequence below holds across the model list.
What you observe
- The turntable turns, the light is on, the food stays cold — Everything except the heating is working, which is the classic picture and the one that sends people to the settings first.
- Warm around the edges only, over a long run — Partial or intermittent heating.
- A loud buzz with no heat at all — The machine is trying.
- It heats for a minute and then stops heating — A thermal cut-out responding to a hot or badly ventilated cabinet, or a component dropping out as it warms.
- NEAR MISS — nothing runs at all — A dead panel or a door that will not start the oven belongs on the page for an oven that will not start.
Causes, most likely first on the EM family
- The high-voltage components that produce the energy — First on this family when a known load stays stone cold: the EM table covers several distinct stems, and an oven that runs, lights, turns and buzzes with no warming at all has already exonerated everything an owner can inspect.
- A door interlock that is only partly engaging — Second: on many builds a door that latches mechanically but does not satisfy every switch leaves the oven running the timer with the energy inhibited. It is not something to adjust at home.
- Power level and special modes — Third on this ranking and still the first thing to check in practice, because it is free — but a cold cup of water after a full-power minute rules it out completely.
- Ventilation, load arrangement and container choice — Last: these produce uneven or slow heating rather than none at all, so a stone-cold result puts them out of the running.
Check in this order, and why
- Run the cup-of-water test at full power — First: a known load and a fixed time turn an impression into a fact, and stone cold means something very different from lukewarm.
- Confirm the power level and that no special mode is set — Second, because it is free and it is the only owner-fixable cause of a completely cold result.
- Close the door firmly and repeat the test — Third — a door that needs a push before the oven heats is telling you about its interlocks, and that is a technician's job.
- Listen for a change in the buzz when heating starts — Last of the owner checks, and the one that confirms the fault is inside the cabinet.
Before you open anything
Safety
Unplug the oven before touching anything beyond the cavity and the door — and then still do not open the cabinet: the high-voltage capacitor inside can hold a lethal charge long after the oven is disconnected, which makes this the one kitchen appliance that can injure you after it is switched off. Never tape, wedge or otherwise defeat a door interlock, never run the oven empty, and stop using it altogether if the door, its inner panel or its mesh is bent, cracked or burned.
Models in the EM family
Reference| Model number | Family key |
|---|---|
| EM025ENR-P00A0H | black-decker:microwave:em |
| EM034A2RC-P00A0L | black-decker:microwave:em |
| EM034AJY-P00A0L | black-decker:microwave:em |
| EM034AL7-P00A00 | black-decker:microwave:em |
| EM034ATC-P00A00 | black-decker:microwave:em |
| EM044K-P00A0A | black-decker:microwave:em |
| EM044K6BB-P0HA00 | black-decker:microwave:em |
| EM044K6BB-P0HA00(black) | black-decker:microwave:em |
| EM044K6BB-P0HA00(white) | black-decker:microwave:em |
| EM044K6CE-P00K0C | black-decker:microwave:em |
| EM044KIN-P00A | black-decker:microwave:em |
| EM044KIN-P00A00 | black-decker:microwave:em |
| EM044KIU-P0HA0C | black-decker:microwave:em |
| EM044KJN-P00A | black-decker:microwave:em |
| EM0P04-P00A00 | black-decker:microwave:em |
| EM0P042CE-P00A00 | black-decker:microwave:em |
| EM0P042DC-P00A00 | black-decker:microwave:em |
| EM0P042RC-P00A00 | black-decker:microwave:em |
| EM0P044X-P00A00 | black-decker:microwave:em |
| EM0P04AA-P00A00 | black-decker:microwave:em |
| EM0P04FF-P00A | black-decker:microwave:em |
| EM0P04FF-P00A00 | black-decker:microwave:em |
| EM0P04FO-P00A0H | black-decker:microwave:em |
| EM0P04GG-P00A0H | black-decker:microwave:em |
| EM0P04NN-P00A0H | black-decker:microwave:em |
| EM0P04NR-P00A00 | black-decker:microwave:em |
| EM0P04NR-P00A00 | black-decker:microwave:em |
| EM142AWR-P00A0B | black-decker:microwave:em |
| EM145AAK-P0HA00 | black-decker:microwave:em |
| EM262A-P0HA00 | black-decker:microwave:em |
| EM262A-P0HA00 | black-decker:microwave:em |
| EM262AMY-P0HA00 | black-decker:microwave:em |
| EM720C-PM0A00 | black-decker:microwave:em |
| EM720C2BU-PM0A00 | black-decker:microwave:em |
| EM720C2GS-PM0A00 | black-decker:microwave:em |
| EM720C2GS-PM0A00 | black-decker:microwave:em |
| EM720C2PN-PM0A00 | black-decker:microwave:em |
| EM720C2PS-PM0A00 | black-decker:microwave:em |
| EM720C2RD-PM0A00 | black-decker:microwave:em |
| EM720CFO-PM0A00 | black-decker:microwave:em |
| EM720CNF-PM0A00 | black-decker:microwave:em |
| EM720CPI-PM0A00 | black-decker:microwave:em |
| EM720CPT-PM0A00 | black-decker:microwave:em |
| EM720CPY-PM0A00 | black-decker:microwave:em |
| EM720CPY-PM0A00 | black-decker:microwave:em |
| EM7P012RJ-P02A0M | black-decker:microwave:em |
| EM923AME-P00A00 | black-decker:microwave:em |
| EM9P02-P00A0A | black-decker:microwave:em |
| EM9P022PQ-P00A0A | black-decker:microwave:em |
| EM9P022PQ-P00A0A | black-decker:microwave:em |
| EM9P022PS-P00A0A | black-decker:microwave:em |
| EM9P022RD-P00A00 | black-decker:microwave:em |
| EM9P022RE-P00A0A | black-decker:microwave:em |
| EM9P022RF-P00A0A | black-decker:microwave:em |
| EM9P02AK-P00A0A | black-decker:microwave:em |
| EM9P02DY-P00A0A | black-decker:microwave:em |
| EM9P02FO-P00A(black) | black-decker:microwave:em |
| EM9P02FO-P00A(white) | black-decker:microwave:em |
| EM9P02ME-P00A0A | black-decker:microwave:em |
When to call a technician
Call, or weigh up replacing the oven, once a known load at full power stays stone cold with the power level confirmed, the vents clear and the door closing firmly — the remaining causes are high-voltage components that must not be touched at home. Stop using the oven immediately if no heating arrives with a burning smell or a spark.
Other faults covered for the EM family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
