there's a high pitched whining noise coming from my upright and it smells like burning, did i break it?

Diagnosis

The high-pitched whining noise combined with a burning smell on your Eureka PowerSpeed NEU182A is a classic symptom of "belt slippage" or "brush roll seizure." In this specific model, the whining occurs when the motor is spinning at high RPMs, but the brush roll is physically obstructed or stuck. This creates a massive amount of friction between the drive belt and the motor pulley. As the rubber belt slides against the metal pulley without gripping, it generates intense heat, which melts the rubber and produces that acrid, burning plastic smell. This usually happens because long hairs, carpet fibers, or small debris have wound tightly around the brush roll, creating a "binding" effect that prevents the roll from spinning freely. If the noise is more of a mechanical scream than a slip, it could indicate a failed bearing in the brush roll assembly or a blockage in the motor's cooling fan, causing the motor to overheat. You can confirm this by checking if the brush roll is spinning when you engage the power; if the motor sounds like it's racing but the brush is stationary, the belt is slipping or snapped.

How to Fix It

Stop using the vacuum immediately to prevent the belt from snapping or the motor from burning out. Follow these precise steps to clear the obstruction and restore the drive system:

1. Unplug the unit from the wall outlet to ensure the motor cannot accidentally engage during maintenance.
2. Lay the vacuum on its back on a hard, flat surface. Locate the bottom plate where the brush roll is housed.
3. Use a pair of scissors or a seam ripper to cut through the hair and string wrapped around the brush roll. Be careful not to cut the bristles of the brush itself.
4. Flip the vacuum over and remove the belt cover plate (located on the bottom) by removing the retaining screws.
5. Inspect the drive belt (Part #0402D). If the belt looks "glazed" (shiny/smooth on the sides), stretched out, or has a burnt smell, it must be replaced regardless of whether it is still intact, as the friction has compromised its grip.
6. To replace the belt, loop it around the motor drive pulley first, then stretch it over the brush roll notch. Ensure it is seated squarely in the grooves of the pulley.
7. Manually rotate the brush roll with your hand to ensure it spins 360 degrees without any resistance or "catching" sounds.
8. Reinstall the belt cover and test the unit on a low-pile area of carpet.

If That Didn't Work

• Check the intake port for a "hard" blockage. If a large object (like a coin or a toy) is lodged in the throat of the vacuum, it can press against the brush roll, creating the friction and whining noise you described. Use a flashlight to inspect the area between the brush roll and the suction inlet.
• Inspect the brush roll end-caps. If the plastic bearings at the ends of the brush roll have melted or cracked due to the heat, the roll will wobble and screech. If you see melted plastic on the edges of the roll, you will need to replace the entire brush roll assembly.
• Check the motor fan for debris. If the burning smell persists but the belt is new and the brush is spinning, a piece of debris may have bypassed the filter and entered the motor housing, obstructing the cooling fan. This requires opening the motor casing to clear the impeller.
• Verify the filter status. A completely clogged filter forces the motor to work harder and run hotter, which can lead to a burning smell from the motor windings even if the belt is functioning correctly. Replace the foam filter if it is grey or black.

Heads Up

• Never run the vacuum on "Hard Floor" settings while the brush roll is engaged, as this increases friction and accelerates belt wear.
• Perform a "hair clear" every 30 days. Even if the vacuum seems to be working, accumulated hair puts constant strain on the motor.
• Avoid using the vacuum on "shag" or high-pile carpets if you notice the brush roll struggling; this model is optimized for medium-to-low pile surfaces.
• If you smell burning, do not "test" the vacuum for more than 5 seconds. Prolonged exposure to heat can warp the plastic drive pulley, making it impossible to get a belt to grip.