Motor stopping intermittently

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I recently got a Phantom 2, and everything worked fine for the first few flights. Then I just tried it, and on start up one of the props is not spinning properly - it spins for a few seconds, stops, and then starts up again without ever reaching the speed of the other 3 props. What's odd is that if I run it without the props attached, it doesn't happen and the motor appears to run fine, at the same speed as other 3 and without stopping. I've tried swapping the props but it makes no difference.

Has anyone got any suggestions as to what I could try to resolve the issue?
 

N017RW

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New or used?

Typically the ESC is the weak point in these propulsiohn systems.
Motors really only wear(out) bearings.

A tip-over/blade stall can damage the ESC.

Has it ever had prop guards mounted?
Fastener mis-match can cause damage to the motor coils but usually results in little to no rotation.
 
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New or used?

Typically the ESC is the weak point in these propulsiohn systems.
Motors really only wear(out) bearings.

A tip-over/blade stall can damage the ESC.

Has it ever had prop guards mounted?
Fastener mis-match can cause damage to the motor coils but usually results in little to no rotation.
New, never had prop guards.
 

N017RW

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Well to know what the issue is between the motor and/or the ESC you'll need to swap a [known good] motor to the suspected ESC to see if both motors act the same. Then you'll know for sure which one it is.
 
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I would start from basics, check for debris inside the motor, then check for loosen cables, then the swap that N017RW mentions above.

;)
 

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