The short answer
On a counter-standing unit, a door that will not latch is usually a fouled latch pocket or a cracked hook, and the first of those is owner-cleanable. A door that latches but does not start belongs to the interlock switches, which are never adjusted or worked around by an owner.
What you observe
- The door springs back open when pushed shut — The hooks are not being captured; look at the pocket and the hooks themselves.
- A crack visible at the base of a latch hook — Shock damage from slamming, and it ends the door.
- The door closes cleanly but the unit will not start — The switch chain, not the mechanics.
- A cycle that stops if the counter is knocked — Marginal switch contact being disturbed.
- Hardened splatter around the latch pocket — The single most common and most fixable finding here.
- Not this fault: the door is fine and the food stays cold — Read the not-heating page instead.
Ranked for a counter unit
- Latch pocket fouled with hardened food splatter — First here, and often cleared in ten minutes.
- Latch hook cracked or deformed by slamming — Second: plastic hooks take the full shock of a door swung shut.
- Interlock switch worn after many thousands of cycles — Third, and a service replacement.
- Door spring or return mechanism weak — Fourth, showing as a door that neither closes nor stays closed cleanly.
- Unit standing unevenly so the door meets the frame at an angle — Fifth, and worth a ten-second check.
- Damage to the door perimeter or choke — Last by frequency; it takes the appliance out of service immediately.
The order to follow
- Look into the latch pocket in good light — Contamination is visible and is the leading cause on this unit type.
- Examine the hooks for cracks at their roots — A cracked hook explains everything downstream of it.
- Establish whether the door latches at all, or latches without starting — This is the branch point of the whole page.
- Put the unit on a flat surface and retry — Removes a twisted-frame explanation at no cost.
Owner checks
- Brush and wipe the latch pocket and the hook faces clean — Dry first, then a barely damp cloth; never flood the area.
Tools: soft brush, clothAbout 15 min
- Inspect each hook under good light for hairline cracks — A crack means the door assembly needs replacing, not adjusting.
Tools: torchAbout 5 min
- Close the door gently and note whether it latches — The gentle close is diagnostic; slamming hides the fault and causes the next one.
About 5 min
- Set the unit on a flat, solid surface and retry — A unit rocking on an uneven counter can twist enough to matter.
About 10 min
- Stop at the door assembly. Its switches and hooks are service parts — They are a safety chain and are never bridged, taped or adjusted at home.
What must not be done to a microwave door
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 the case stays on for that reason alone. The interlock chain is left exactly as built; a unit that only runs when the door is held closed is out of service until a technician has seen it, and a door with visible damage at its perimeter or choke is not to be used at all.
When it is a service call
Call when the door latches and the unit still refuses, when any hook is cracked, or when a cycle stops on its own. Call as well if the door has been slammed hard enough to mark the frame, because the shock travels into the switch assembly. Cleaning the pocket is the only repair on this page that belongs to the owner; everything else is a technician’s.
Other pages for this appliance
Page scope
Generalized across families and written for counter-standing units; the companion door page covers mounted installations, where sag dominates instead. A family-specific or model-specific page, where one exists, is the better answer. Deliberately absent: hook and switch part numbers, door-assembly exploded views, alignment procedures and any containment measurement, which is technician work.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
