Fix My Servo Pls.
 

I have 2 servos of the same kind on my rig. One of them suddenly stopped working. I mean; it still moves if there is absolutely no load, but it has no power, and moves really slow. The insides all look fine, but I haven't pulled the MOTOR apart yet.
Whats wrong with this thing and how do I fix it?

Economy, all metal gear, 15kg, analog servo.
CYS0150 from crawfords performance engineering.

sounds like a dead servo, order another one, it is a cheap servo and to be expected they can and will fail.

So when a servo goes, what is it that actually fails? the motor? The circuit board? the brushes?

could be anything man, at the cost of that one just buy another one, the higher up servo's will carry a warantee, theres usualy not much internaly you can fix on your own.

(you could change the circut boards and motors out from other servo's that have failed gears etc. but again, at the cost of that servo. just get another one)

side note, you can get better quality servo's for the same price of that one.

D, any/all of the above. Additionally it could be the geartrain or the gear shaft holes in the case can wear out allowing gear misalignment.
Most of my servos are brushless, so that is not an issue for me.