The short answer
Nothing at all on the display means supply: socket, cord, breaker, in that order. A lit display that beeps and refuses means the door chain, a lock mode or a timer function is holding the unit, and each of those is cleared without tools.
Place your symptom
- Completely dark and silent — A supply question and quick to resolve.
- Lit display, start produces a beep and nothing else — A deliberate refusal by the control.
- A lock indication on the panel — Clear it and retry before anything else.
- A time or delay display that does not count down — A timer function is holding the cycle.
- Works in one socket and not another — That settles it: the socket is the fault.
- Not this fault: it runs but leaves the food cold — That is the not-heating page.
Ranked for a counter unit
- Socket dead or circuit tripped — First, and often caused by something else on the same circuit.
- Door not registering as closed — Second, and the most common reason for a beep-and-refuse.
- Child lock set — Third. One stray press during cleaning does it.
- Cord damaged where it passes behind the counter — Fourth, and worth a look rather than a guess.
- Delay-start or timer function engaged — Fifth: the unit is waiting exactly as instructed.
- Keypad, board or internal fuse — Last, and the point at which it becomes service work.
Order of checks
- Plug something else into the same socket — It resolves the entire supply branch in seconds.
- Move the microwave to a different wall socket — A positive result there names the socket, not the appliance.
- Open the door fully and close it firmly, then press start — This is the main cause of a lit-but-refusing unit.
- Clear any lock or timer function shown on the panel — The last of the free checks and a frequent finding.
What an owner can do
- Test the socket with a lamp or charger — The fastest single check on this page.
Tools: lampAbout 5 min
- Plug the microwave into a different wall socket, without an extension lead — Separates appliance from installation cleanly.
About 10 min
- Inspect the cord for crushing where it passes the counter edge — Damaged cords are replaced, never taped.
Tools: torchAbout 10 min
- Close the door firmly and listen for the latch to seat — A door resting shut but unlatched blocks every start command.
About 5 min
- Clear the child lock and any delay-start setting — Both present exactly like a broken appliance.
About 10 min
- Stop at the case; it is never opened by an owner — The capacitor inside can hold a lethal charge after unplugging.
The limits here
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off, and in a microwave it can be lethal. Do not repair a damaged cord with tape, do not hold or wedge the door to force a cycle, and do not reset a breaker repeatedly if it trips whenever the unit is connected.
When to call
Call when the unit is dead on a socket that is proven good, when a properly latched door still produces a refusal with no lock set, or when the cord is damaged. On a low-cost counter unit ask what the repair will cost before authorising it, because an internal fuse or board replacement can approach the price of a new appliance.
Other faults on this unit
What this page does not cover
Generalized across families and written for counter-standing units; the companion page covers mounted installations, where the hidden socket dominates. A family-specific or model-specific page, where one exists, is more precise. Not here: fuse ratings, board part numbers, interlock switch identifiers and any step that requires the outer case to be removed.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
