Servo Troubleshooting notes

Ed NutterOctober 4, 2018

Servo Troubleshooting

Ostendorff

Forcing a servo to rotate when off can damage it.


Malfunction:Servo makes a grinding noise or acts erratic

Probable Cause

Corrective Action

Source

Examine gears for broken teeth

Replace gears

General




Malfunction:Servo Jitters

Probable Cause

Corrective Action

Source

Dirty potentiometer

Use zero residue contact cleaner

General





Malfunction:Hunting

Probable Cause

Corrective Action

Source

Underpowered servos don’t move exactly to position, but go back and forth near it

Use servo with more torque

Grusin





Malfunction:Servo is locked in place

Probable Cause

Corrective Action

Source

Gears not aligned

Check alignment

General

Top case worn

Inspect top case for wear.Replace if needed

General





Malfunction:Servo hums under load

Probable Cause

Corrective Action

Source

Servo trying to hold position

Use servo with higher torque

General

Servo has forgotten words

Find lyrics






Malfunction:Servo gets hot

Probable Cause

Corrective Action

Source

Overheating

Check wiring

General

Gears binding

Check alignment

General




Malfunction:Servo is clicking

Probable Cause

Corrective Action

Source

Gears are binding

Check servo for wear

Replace gears

Grusin





Malfunction:Erratic operation

Probable Cause

Corrective Action

Source

Trying to make servo switch too quickly

Slow operation

Use faster servo

Grusin

Low battery

Replace battery






"General Servo Information." Hitec, n.d. Web. 4 May 2017. < https://www.robotshop.com/media/files/pdf/servomanual.pdf >.

Grusin, Mike. "SparkFun Hobby Servo Tutorial." Learn at SparkFun Electronics. N.p., n.d. Web. 04 May 2017. < https://learn.sparkfun.com/tutorials/hobby-servo-tutorial >.


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