A useful question
Is it a knock, scrape, hum or repeated rattle?
Describe the sound and whether it begins immediately or only with a load. Mention a recent change in position or loading.
Work, charges, access and appointment availability confirmed before attendance.

Original illustrative scene · Not an exact manufacturer model or a completed-job photograph.
Loose items, load distribution and mechanical wear can sound similar. Stop use if the noise is severe or accompanied by smell.
Is it a knock, scrape, hum or repeated rattle?
Do not remove panels, bypass a switch or repeatedly restart a warning. Routine user care must follow the actual model instructions.
Prepare the complete model, technology, symptom and practical access. These notes stay on your device; they do not submit a booking.
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