A dryer that quits in the middle of laundry day usually fails for one of six reasons, and four of them you can fix yourself with a $15 multimeter. Why did my dryer stop working is the question every homeowner asks before making the call to a $120-an-hour appliance tech, and the answer often comes down to a thermal fuse the size of a paperclip. Most repairs take under an hour. The hardest part is moving the unit out from the wall.
Start With the Power and the Door Switch
Before you tear into anything, plug a lamp into the dryer’s outlet. If it lights up, power is fine. If not, check your breaker panel — electric dryers run on a 240-volt double-pole breaker, and one half can trip while the other stays on, which gives you a dryer that hums but won’t heat or tumble.
The door switch is the next suspect. Open the door and press the small plunger near the strike with your finger. You should hear a faint click. No click, no spin. A replacement plunger switch runs $8 to $14 on parts sites like Repair Clinic and takes ten minutes to swap.
Thermal Fuse: The Silent Killer
If your dryer has power but absolutely nothing happens when you press start, a blown thermal fuse is the culprit about 40% of the time. This safety device sits on the blower housing and pops permanently when exhaust temperatures exceed roughly 196°F, almost always because of a clogged vent line.
Test it with a multimeter set to continuity. A good fuse beeps. A blown fuse stays silent and needs replacement, but cleaning the entire vent run from dryer to roof or sidewall cap is non-negotiable — skip that step and the new $12 fuse will pop within a load or two.
Drum Won’t Turn but Motor Hums
A snapped drive belt is the classic culprit when the motor runs but the drum stays still. Reach inside, give the drum a hand spin, and if it rotates freely with no resistance, the belt has either snapped or jumped off the idler pulley.
Belts cost $15 to $25 depending on brand. Whirlpool and Maytag use a 92.5-inch belt for most 27-inch models. While you’re in there, replace the idler pulley too — it’s another $20 part and a worn one squeals like a stuck pig within a few months of a new belt going on.
No Heat but Drum Spins
When clothes tumble forever and come out cold, you’re looking at a heating element, high-limit thermostat, or cycling thermostat. On gas dryers, suspect the igniter or gas valve coils instead.
- Heating element: $35 to $80, located behind the rear panel, tests at 8 to 12 ohms when good
- High-limit thermostat: $10 to $20, sits on the heater housing, should show continuity at room temperature
- Cycling thermostat: $12 to $25, mounted on the blower, opens and closes to regulate heat
- Gas igniter: $30 to $50, glows orange before the gas valve opens
Check elements visually first — a burned-out coil often shows a clean break or scorch mark you can spot with a flashlight.
Loud Banging or Squealing
Noisy dryers usually still work, but they’re warning you. A grinding screech points to worn drum support rollers, the small wheels that the back of the drum rests on. They cost about $20 for a set of two and require pulling the front panel.
A rhythmic thump-thump-thump is typically a worn drum glide or felt seal — clothes are catching on the gap where the drum meets the front bulkhead. Replace the felt for around $25 before it shreds your sheets.
Stops Mid-Cycle
If your dryer starts fine but quits ten minutes in, the motor’s internal overload switch is tripping. That happens when the motor overheats, and overheating happens when airflow is restricted. Pull the lint screen, vacuum the housing below it with a long crevice tool, and inspect the exhaust hose for crushed sections.
A bad start switch can also cause this — the contacts arc, build resistance, and eventually open under load. Listen for a faint click when you press start. No click means the switch is the most likely fix.
When to Call a Pro
Control board issues are where DIY ends for most people. A bad main board on a modern Samsung or LG dryer runs $200 to $400 for the part alone, and diagnosing it requires either a service manual or a parts-cannon approach that gets expensive fast. If your dryer is over 12 years old and the repair quote tops $250, replacement usually makes more financial sense than another round of fixes.
For dryers under warranty, do not open the cabinet — you’ll void the coverage. Check your purchase paperwork or the manufacturer’s site with the model number from the door jamb sticker before grabbing a screwdriver.
Prevent the Next Failure
Clean the lint screen every load. Vacuum the lint trap housing twice a year. Disconnect and clean the full vent run annually, and replace any flexible foil duct with rigid or semi-rigid metal — foil traps lint and is a documented fire hazard. A dryer with a clear vent runs cooler, dries faster, and lasts five to seven years longer than one fighting a clogged exhaust.
Inspect the vent termination cap outside the house every spring. Lint accumulates at the flapper, birds nest in unused vents, and snow packs the opening shut in winter. A blocked exterior cap is a leading cause of dryer overheating, and clearing it takes two minutes with a screwdriver and a brush. While you’re outside, run the dryer briefly and confirm strong airflow at the cap — weak airflow points to a kinked or partially blocked duct between the dryer and the wall.
Keep the back of the dryer at least 4 inches from the wall to prevent crushing the flexible duct connector. Use a metal foil tape rather than screws to secure duct sections — screws protrude inside the pipe and catch lint, creating clog points that defeat the cleaning you just did.
