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What's this noise?

nebswales
in General Maintenance

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Can anyone diagnose this noise?

 

Metallic rotating grinding noise coming from behind the ventilation. Reminds me of a grasshopper. 

 

Have longer video if needed. 

TRIM_20170501_143752.mp4

Does it do it when you turn the fan blower off?

Video won't play for me? Does the noise change with A/C on or off?

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With blower off seems worst. 

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