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Quick answer
Keep the Whirlpool WMH78019HW06 off when the turntable glass is broken or missing. Whirlpool's exact-model repair-parts list identifies the WMH78019HW06 and lists a model-specific turntable entry, W11358813, together with separate turntable ring, driver, and motor entries; that is stronger evidence than a generic diameter or a plate from another microwave. Inspect the support ring, hub, and cavity floor for shards or damage, then use the exact model and part-list entry to confirm the replacement. Install the turntable right side up and securely on its support, and do not run the microwave without the turntable and support correctly in place. If the replacement does not seat, the ring or hub is damaged, or the model label differs, stop and use Whirlpool service.
Work through in order
Diagnostic checks
Use only checks that match the exact appliance or system and its official guide.
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Check 1
Stop using the microwave while the glass plate is cracked, shattered, or missing. Keep the oven off while removing loose shards and do not substitute a dinner plate, a generic tray, a metal plate, or an empty cavity for the turntable.
Expected result: The turntable is damaged or absent, or the support ring, hub, or cavity floor also shows damage.
Next step: Identify the full model and obtain the model-matched turntable entry before any test. If the support or cavity is damaged, stop and arrange service instead of testing the oven.
Why this matters
Why: The turntable is part of the model's operating assembly; Whirlpool says not to operate without it in place. A substitute can sit incorrectly, interfere with the drive, or fail to provide the intended turntable function.
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Check 2
Read the complete rating-label model, including every suffix, and compare it with the Whirlpool repair-parts list before ordering. Do not rely on a family name such as WMH78019HW or on a plate diameter.
Expected result: The label confirms WMH78019HW06, or it shows a different model or cannot be read.
Next step: For WMH78019HW06, compare the official list's turntable entry W11358813 and the associated support components. If the label differs or is unreadable, use Whirlpool's model-number manual/parts lookup before buying anything.
Why this matters
Why: Whirlpool's repair-parts list explicitly groups WMH78019HW06 with related model variants and gives model-specific turntable components. A similar-looking microwave or a different suffix may use a different plate or support.
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Check 3
With the oven off, inspect and clean only the accessible turntable area: the hub, support ring, roller track, and cavity floor. Remove loose food or packaging debris and check that the support ring is not cracked, bent, or missing rollers. Do not reach behind panels or attempt to service the motor.
Expected result: The ring and hub are intact and the cavity floor is clear, or a roller, ring, hub, or cavity surface is damaged or cannot be identified.
Next step: If the support is intact, continue with correct replacement installation. If it is damaged or the hub does not engage, stop and obtain the exact support part or qualified service; do not improvise a spacer or adhesive repair.
Why this matters
Why: Whirlpool identifies support seating and roller-track obstruction as causes of thumping or rumbling. A damaged support assembly can prevent a correct replacement plate from sitting securely; it does not prove the motor has failed.
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Check 4
Install only the exact replacement turntable after confirming the model and part record. Place it correct side up on the support and hub so it sits securely and can rotate freely by hand without scraping; do not energize the microwave while the plate or support is absent or unstable.
Expected result: The replacement sits securely and rotates freely, or it rocks, binds, scrapes, does not engage the hub, or is a different material/shape than the order record.
Next step: If it does not seat exactly, stop and recheck the full model and Whirlpool part record. Do not run the oven to see whether a loose or wrong plate will settle; contact Whirlpool service if the exact assembly still does not fit.
Why this matters
Why: Secure seating is a prerequisite for safe operation. A mismatch can come from the wrong model, wrong turntable orientation, damaged support, or an incorrect part, and cannot be resolved by forcing the plate into place.
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Check 5
If the correct turntable and support are installed but the plate still will not rotate, makes repeated grinding or scraping, or the drive hub does not move normally, stop external troubleshooting. Do not open the microwave cabinet or replace the motor from a generic parts search.
Expected result: The plate is correctly seated but the drive remains abnormal, or the microwave has another electrical, door, sparking, or heating symptom.
Next step: Keep the microwave out of service and provide Whirlpool or a qualified technician the full model, the part record, and what happens with the correctly seated turntable.
Why this matters
Why: Whirlpool's public guidance treats unresolved turntable or motor problems as service issues; internal microwave components are outside a safe plate-replacement check.
Use your observations
Decision map
Find the observation that best matches what you see, then follow the next safe action.
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PATH 01Next step
What you see
The glass is broken or missing, the support ring or hub is damaged, or the replacement does not sit securely.
Do this next
Keep the oven off, match the complete model to the official turntable and support entries, and use qualified service if the cavity or drive area is damaged.
Why this path and its safety boundary
Why it matters: The turntable assembly is not in a verified operating condition, and Whirlpool says not to run the microwave without the turntable properly in place.
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PATH 02Next step
What you see
The full label is WMH78019HW06, the exact turntable entry is obtained, and the support ring and hub are intact.
Do this next
Install the exact turntable right side up and securely on the support. Do not test until the assembly is stable and the support is present.
Why this path and its safety boundary
Why it matters: The external fitment path is sufficiently scoped for a model-matched turntable replacement; a generic 12-inch plate is still not verified.
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PATH 03Next step
What you see
The exact replacement is installed correctly but the plate binds, scrapes, fails to rotate, or the microwave has another electrical, door, sparking, or heating problem.
Do this next
Stop using the microwave and arrange qualified Whirlpool service with the exact model and the turntable/support observations.
Why this path and its safety boundary
Why it matters: The issue is no longer a simple broken-plate replacement; the official guidance does not support opening the cabinet or naming an internal motor or control fault from this observation.
Helpful context
Understand the symptom
The supplied community report identifies a Whirlpool convection microwave and model WMH78019HW06, but its exact Reddit page was not available to open during this run, so it is not used as a public source. The exact Whirlpool repair-parts list independently confirms WMH78019HW06 as one of the covered models and separates the turntable, support ring, driver, and motor. The list labels the plate assembly simply as “Turntable”; confirm the material and fitment in the order record rather than assuming that any round glass or metal plate is interchangeable.
Whirlpool's over-the-range microwave guidance says an incorrectly installed turntable or support roller can cause thumping or rumbling and says not to operate the microwave without the turntable in place. Its turntable guide also directs the user to inspect the correct-side-up orientation, secure support-hub seating, and obstructions on the roller track. These are the useful external checks after the exact replacement is obtained.
Do not open the microwave cabinet to repair the turntable motor or other microwave components. The exact-model parts list is enough to identify the external turntable parts, while a failed drive or a damaged cavity requires model-matched service. A broken plate is a reason to pause use, not to test the oven with a temporary plate, cookware, or no plate.
Only after diagnosis
Potential parts
- model-matched turntable assembly
Consider only after the rating label confirms WMH78019HW06 and the official repair-parts record is checked; the list names W11358813 as the turntable entry for this model family.
Confirm the complete model suffix, part description, material, and support arrangement before ordering. Do not substitute a generic plate or a part listed for another model. - turntable support ring and drive components
Consider only if the ring, driver, or motor is visibly damaged or the correctly matched turntable does not seat or rotate; the official list treats these as separate components.
Use the exact model repair-parts list and qualified service for drive or motor work; do not infer fitment from a shared-looking microwave platform.
When checks do not resolve it
Need a professional?
Before using the microwave with a missing, cracked, or unstable turntable., When the complete model label does not exactly match WMH78019HW06 or cannot be read., When the support ring, hub, cavity floor, or drive does not accept the model-matched replacement., When the correctly installed turntable will not rotate or makes repeated grinding or scraping., Immediately for sparking, smoke, electrical damage, door damage, or a heating problem in addition to the broken plate.
Common questions
FAQ
Can I use any standard 12-inch microwave glass plate in the WMH78019HW06?
Do not assume that diameter is enough. Whirlpool's exact repair-parts list identifies a model-specific turntable entry and separate support components. Match the complete model and part record, and do not run the microwave until the plate and support seat securely.
Can I test the microwave without the glass plate while waiting for the replacement?
No. Whirlpool's over-the-range turntable guidance says not to operate the microwave without the turntable in place. Keep it off until the correct turntable and support are installed.
What exact part does Whirlpool list for WMH78019HW06?
Whirlpool's repair-parts list names W11358813 as the turntable entry for the WMH78019HW06 family and separately lists the turntable ring, driver, and motor. Confirm the full model, color/variant, and current part description before ordering; the list does not authorize substituting a different plate material.
What if the new plate fits but does not rotate?
Turn the microwave off and check only the correct-side-up seating, support ring, hub, and visible roller-track obstruction. If those are correct and the plate still binds or will not rotate, stop and use qualified service rather than opening the microwave or replacing the motor by guesswork.
Read the exact guide
Official sources
- Why is my microwave plate not spinning?Whirlpool · Opened Whirlpool's official consumer guide. It supports checking correct-side-up seating on the hub, clearing debris from the roller track, following the model manual for turntable settings, and using professional service for a motor fault. It is not used to establish WMH78019HW06 part fitment.
- Repair Parts List - W11566329 - Rev AWhirlpool Corporation · Opened the official Whirlpool repair-parts PDF. Its cover explicitly lists WMH78019HW06 and related color/model variants. The turntable section lists W11358813, W10679313, W10337248, and W10466420 as separate turntable components; it is used for exact model fitment, not for generic plate substitution.
- Turntable Not Working - Over-the-Range MicrowaveWhirlpool Product Help · Opened Whirlpool's official over-the-range microwave troubleshooting page. It says incorrect turntable or support installation can cause thumping or rumbling, says not to operate without the turntable in place, and routes unresolved problems to service. It does not select a part for an unidentified model.
- Whirlpool Manuals & LiteratureWhirlpool Corporation · Opened the official Whirlpool manuals page. It requires the model number to retrieve the applicable manuals and literature; it supports the identity gate, not a generic turntable size or replacement claim.
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