Appliance Spares
Quick answer: A top loader that fills then sits silent, washes but refuses to spin, or blinks its lid lock light usually has a failed lid switch or lid lock — the safety interlock that tells the machine the lid is shut. Mechanical micro switches for Simpson, Westinghouse and Whirlpool top loaders run typically $15–30; electronic Samsung lid lock assemblies sit around $60–80. The fix is a 20–30 minute swap. What matters is matching the part to the model number on your machine’s sticker.
Last updated August 2026
Fills up, then silence: your washer thinks the lid is open
Sunday morning, first proper load of the spring. The machine fills like normal, then just sits there humming — no agitation, no spin, no error worth the name. Or it washes but stops dead before the spin. Or the lid lock light blinks and nothing happens at all.
Nine times out of ten that is not the motor, the board or the pump. It is the lid switch — the safety interlock that must close before the machine is allowed to agitate or spin. When it fails, the washer believes the lid is open and refuses to run. The machine is not broken so much as being extremely cautious.
Here is how the three most common versions of the fault line up.
| Symptom | What it means | The part |
|---|---|---|
 Simpson or Westinghouse top loader fills, then sits silent | The micro switch under the lid rim is not closing, so the machine never gets the “lid shut” signal | Simpson Westinghouse lid door micro switch 119020300 |
 Whirlpool top loader washes but will not spin | Burnt switch contacts or a worn actuator lever — spin is the first thing the machine cuts | Whirlpool lid switch 3949247 (flat pins) |
 Samsung top loader lid lock light blinks; lid will not lock, or stays locked | The electronic lid lock assembly has failed — it bolts the lid and reports back to the board | Samsung DC34 lid lock door switch for WA11M8700GV/SA and WA13M8700GV/SA |
Mechanical switch or electronic lid lock? Two different animals
The mechanical micro switch — the classic Aussie top loader setup
Older-style Simpson and Westinghouse top loaders use a simple micro switch: a matchbox-sized body with a lever the lid presses when it closes. Part number 119020300 (also seen as the short code 0077) covers a long run of Simpson and Westinghouse machines, and it costs less than a round of takeaway. Every wash, the lid slams onto it; after a decade of Monday loads the contacts pit or the lever snaps.
Whirlpool top loaders use the same idea in a different housing: part number 3949247, the version with flat pin connectors. Same failure mode — the machine washes happily, then baulks exactly when the cycle asks for spin.
The electronic lid lock — Samsung’s approach
Samsung’s WA10J, WA11M and WA13M top loaders — including the WA11M8700GV/SA and WA13M8700GV/SA — do it differently. The DC34-00025E family lid lock physically bolts the lid shut during the cycle and reports its state to the control board. When it fails you see the lid lock light blinking, a cycle that will not start, or a lid that stays locked long after the machine has finished. Because it is an active assembly rather than a bare switch, budget $60–80 rather than pocket change — but the swap is no harder.
If your machine is a Fisher & Paykel and the lid stays locked the whole cycle, that is its own story — covered in the Fisher & Paykel WL1064G1 lid locked guide.
Confirm it before you buy: the lid-jiggle and the multimeter
Two quick checks confirm the interlock is your problem.
- The lid-jiggle. Start a cycle, let it fill, and when the machine goes quiet press down firmly on the lid over the switch area, or open and close it a few times with authority. If that makes the machine spring to life, you have found your fault. A switch that only works when leant on is on its way out.
- The continuity check. Unplug the machine from the wall first — always. Get to the switch (on most Aussie top loaders it lives under the top panel near the lid hinge), pull the connectors off, and put a multimeter on continuity across the terminals. You want a beep when the actuator is pressed and open circuit when released. No beep when pressed means dead; erratic beeping means dying.
On the Samsung electronic lock a multimeter is less conclusive because the assembly talks to the board, but a blinking lock light plus a lid that never gives its locking clunk points the same way.
The magnet cheat: do not do it
Search this fault online and you will quickly find the “trick”: tape a magnet over the sensor, wedge the switch closed, or bridge the wires so the machine always thinks the lid is shut. Never bypass a safety interlock. Not to finish the load, not “just until the part arrives”.
A top loader in its final spin is a heavy steel basket turning at several hundred revolutions per minute, in an open-topped machine, in a room where kids and pets wander through. The interlock is what stops the drum the instant a hand reaches in. Bridging it removes that protection — and on electronic locks it usually does not even work, because the board expects the lock’s feedback signal. The proper replacement is typically $15–30 for most machines. Buy the part.
What the swap actually looks like
This is one of the friendliest jobs in appliance repair — just a switch on a plug or a pair of spade terminals.
- Unplug the machine at the wall. Cord out of the socket, not just off at the panel.
- If the drum is full, run a drain or spin-drain cycle first (before unplugging), or bail it out. A locked Samsung lid usually releases a minute or two after power is removed.
- Open the top panel or console — most Simpson and Westinghouse tops hinge up after releasing two clips or screws at the rear; Whirlpool consoles tilt forward after removing the end-cap screws.
- Photograph the wiring before you touch it. A ten-second photo saves a twenty-minute headache.
- Unclip the old switch, transfer the wires or plug to the new one, clip it in, close up.
- Plug in, run a short cycle, then confirm the machine stops when you open the lid. That last check matters: you are proving the safety device works, not just that the machine runs.
Allow 20 to 30 minutes, against a repairer call-out at the typical $100–165 before the part is even fitted. If you would rather not open the machine, fair call — knowing the exact part number still means the repairer arrives with the right switch and finishes in one visit.
If the switch tests fine
A healthy interlock with a machine that still will not spin sends you down a different path:
- Walks or bangs on spin attempts — worn suspension is the usual culprit. See which suspension rod kit or shock absorber fits my washing machine.
- Won’t spin and won’t drain — no top loader spins with water aboard; check the drain pump and filter first.
- Samsung no-spin symptoms — full walkthrough in Samsung washing machine not spinning: 5 causes and fixes.
Whatever it turns out to be, the part is almost certainly in our washing machine parts range — switches, locks, pumps, rods and seals for the machines Australians actually own.
Frequently asked questions
Q: How do I know if my top loader’s lid switch is broken?
A: The classic signs: the machine fills then does nothing, washes but refuses to spin, or only runs when you press down on the lid. Confirm it by unplugging the machine and testing the switch with a multimeter — a good switch shows continuity when pressed and open circuit when released.
Q: Can I bypass the lid switch to finish a load?
A: No. The lid switch is a safety interlock that stops the drum the instant the lid opens, and a spinning basket can seriously injure anyone who reaches in. On electronic lid locks a bypass usually will not work anyway, because the board expects a feedback signal. Replace the switch — for most machines it costs typically $15–30.
Q: Which lid switch fits my Simpson or Westinghouse top loader?
A: A long run of Simpson and Westinghouse top loaders take the 119020300 micro switch. But do not buy on brand alone — find the model number on the model sticker (usually under the lid or on the rear panel) and match it against the listing, or send it to us and we will check before you order.
Q: Why does my Samsung top loader’s lid lock light keep blinking?
A: On Samsung WA10J, WA11M and WA13M series top loaders a blinking lid lock light usually means the DC34-00025E family lid lock assembly is not locking or not reporting back to the board. If the lid never gives its locking clunk after the cycle starts, the lock assembly is the prime suspect.
Q: How long does it take to replace a washing machine lid switch?
A: Around 20 to 30 minutes with a screwdriver and a photo of the wiring. Unplug the machine at the wall first, swap the switch, then check that opening the lid still stops the machine — that test proves the safety device is doing its job.
Get the right switch, first go
Lift the lid and find the model sticker — on most top loaders it is under the lid rim or on the back panel. Search that model number or the part number on our site and the matching switch or lock comes straight up. Not sure which one you are looking at? Send the model number through our contact page and we will match the exact part before you spend a cent. Order by 12pm and it ships that same business day from Sydney’s Northern Beaches — with a bit of luck, the spin cycle is back before the weekend washing piles up.
Disclaimer: this article is general information only and is provided without warranty of any kind. Appliance designs vary between models and production runs — always follow the manufacturer’s instructions, switch off and unplug the appliance before starting any work, and confirm parts against the model number on your appliance’s model sticker. Any repair is undertaken at your own risk and Oz Appliance Spares accepts no liability for injury, loss or damage arising from work performed after reading this guide, to the maximum extent permitted by law. If in doubt, use a qualified technician.
