EF 100-400mm f/4.5-5.6L IS USM tightening repair

[tlnoel]

Canon service says they no longer support the older model 100-400 IS lens. My locking ring no longer locks. Has anyone had this repaired? where did you send it? Is it a repair that I could make, Where could I find parts, and instructions? Any advice, comment, etc., would be great. Thx

[gewb]

Last repair I had was January of 2018, completed by Canon Factory Services Center in Costa Mesa, CA.

Total bill was $440.83 covering labor, parts and 2 day shipping.

This is not a do it yourself project!

[Lotus7]

DIY Repair.  Total Cost $0.02.

[jrhoffman75]

Some folks on here recommend Midwest Camera Repair. I have never used them myself.

[ebiggs1]

"Midwest Camera Repair."  +1 😊