Dryer runs but makes a loud squealing or screeching noise during operation.

Safety first: Unplug the dryer. Moving parts can cause injury.

Step-by-step checks:

• Isolate the noise: Run the dryer briefly and listen to locate the noise source (front, rear, or base). Then unplug before opening.
• Inspect rollers and idler: Remove the front and/or rear panels to access the drum supports. Spin each roller and the idler pulley by hand. Replace any that are noisy, stiff, or wobbling.
• Check rear bearing: If fitted, inspect the rear drum bearing for wear or dryness. Replace the bearing kit if there is excessive play or grinding.
• Lubrication: Only use manufacturer-approved lubricants where specified; many bearings are sealed and should not be oiled.

When to call a technician: Drum removal for bearing replacement can be complex; professional service is advisable if you are unsure.