GFC 500 Trim issue

[thomas1142]

During a recent flight I got these two error messages. First leg of the flight the PTRIM lit up on the G3X but the GFC 500 continued operating normally. Trim was adjusting automatically, I could see the trim wheel moving. Second leg of the flight the TRIM UP or TRIM DOWN notification was displayed. I had to trim manually. 
 

Any ideas

Thanks

[ArtVandelay]

Another servo failure, check your serial number and look up an SB from Garmin. If you turn on logging (G3X), maybe you see more details of the errors.

[thomas1142]

I replaced the Servo once about ten months after installation. I thought I might have escaped the latest round of faulty servos..