All donors

KitchenCommon

Toaster and toaster oven

Also called toaster, toaster oven.

Nichrome on mica, a mechanical timer or a simple board, and a thermal fuse. The pop-up mechanism is a bimetal or an electromagnet, depending on the era.

A donor is the dead machine. The parts below are what is still worth removing from it. “Leave it” is a part that is physically in there and should stay in there: too dangerous, too worn, or only useful as part of a repair you are not doing.

What you are looking at
Lid, set asideSealed supplyMotor or pumpCord, inspect itOpen the dead one. Do not defeat the safety parts on a live one.

A scrapped machine is a box of parts that failed at different times. The reason it was thrown out is often one bad piece. The motor, the cord, the supply, and the screws are frequently still good. This index says which is which.

Why it is in the trash while the parts are not

It no longer pops, or a coil broke. Broken nichrome is usually not worth rewinding.

Before you open it

Do this while it is still unplugged, cool, and not leaking. Unplug. Empty the crumbs outside.

Where the dead machine usually is

Crumb trays are full of crumbs that will burn if you test it on the bench.

How it comes apart

Side screws. Note how the carriage latches before you let the spring go.

Tools: Phillips, Meter.

Words on this page

thermal fuse
A one-time safety link that opens when it gets too hot and stays open. It is not a switch you can reset. Replacing it with wire removes the protection.

What to take

The table is the short version. The notes under it describe that part inside this machine, not only the general description.

Parts in this donor
PartCallHow manyHow oftenWhere to look
Nichrome wireWorth pulling2–4usuallyOn mica cards.
Thermal fuseWorth pulling1usuallyIn the wiring.
Bimetal thermostatBonus1sometimesThe timer on older pop-ups.
SolenoidBonus1sometimesElectronic pop-ups.
SpringWorth pulling1alwaysCarriage return.
Panel switchBonus1usuallyThe lever.

Worth pulling

  • Worth pullingNichrome wire2–4 · usually

    Mains element, several hundred watts per card.

    On mica cards.

    Keep the mica. Do not let coils touch.

    Brittle if it has already been overheated.

  • Worth pullingThermal fuse1 · usually

    One-shot.

    In the wiring.

    Test continuity.

    Often the actual fault.

  • Worth pullingSpring1 · always

    A real spring.

    Carriage return.

    Control it.

    Good.

Bonus

  • Bonus, if you are already in thereBimetal thermostat1 · sometimes

    A heater-warmed bimetal releases the carriage.

    The timer on older pop-ups.

    Amusing, not precise.

    Fatigued.

  • Bonus, if you are already in thereSolenoid1 · sometimes

    Holds the carriage down.

    Electronic pop-ups.

    Short duty.

    Good.

  • Bonus, if you are already in therePanel switch1 · usually

    Mains.

    The lever.

    Test.

    Good.