Whirlpool Microwave Control Board W10678766 – Fixes No Heat, Error Codes & No Power
When a Whirlpool microwave won't heat, displays error codes, or has no power at all, the main control board is the most common cause. In most Whirlpool over-the-range and countertop microwaves, the control board manages every function — power levels, magnetron control, timer, and display. When it fails, the microwave may go completely dead, run without heating, show fault codes, or behave erratically with no pattern. ⚡ Common failure point in Whirlpool-built microwaves after power surges or age-related component failure. Part W10678766 is the genuine OEM replacement control board that restores full microwave operation immediately.
Whirlpool Microwave Microwave Control Board W10678766
Is This the Right Part?
Confirm the complete model number before ordering. Similar parts may use different connectors, dimensions, hose positions, electrical ratings, or mounting points.
- ✔ Microwave has power to the outlet — breaker and fuse confirmed OK
- ✔ Door switches test good (microwave doesn't trip the fuse when door closes)
- ✔ Magnetron and high-voltage components have been ruled out
- ✔ Thermal cutout and thermoprotector are intact
- ✔ ONLY problem is no response from controls, error codes on display, or no heat with all other components OK
- Microwave completely dead — no display, no response to any button
- Display shows error codes or fault messages (F1, F2, F3, etc.)
- Microwave runs but doesn't heat food
- Controls are unresponsive or only some buttons work
- Random beeping or display flashing with no input
- Microwave starts then stops mid-cycle for no reason
- Display is blank but microwave otherwise powers on
- Part Number: W10678766
- Type: Main Electronic Control Board (PCB assembly)
- Replaces: OEM direct-fit control board for compatible Whirlpool-built microwaves (no modification required)
- Brands: Whirlpool, Maytag, KitchenAid, Amana, JennAir
The high-voltage capacitor inside a microwave can hold a charge of 2,100V or more — enough to be fatal — even hours after unplugging. Before touching any internal component, discharge the capacitor using an insulated screwdriver across its terminals. This is the single most important safety step in any microwave repair and must not be skipped.
Part Details
Use a qualified technician when diagnosis or installation is outside your experience. Gas parts should be installed by a licensed technician.
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Kitchener, Ontario N2E 1W8
