Haven't got pic. Kingswinford, West Midlands.
Took knob off and turned metal shaft to ensure knob not slipping.
With knob at max. 12 o'clock, it blows well and reduces to a whisper as knob is turned to '10 to' and then it sticks. Overcome resistance and blower becomes strong again and then seems to operate normally down to off at 'half past'. Audi mechanic said it is the unit inside.
Thanks
Keith
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