Find great deals on eBay for canon lens repair manual. Shop with confidence. Canon EF 70-200mm f/4.0L USM Lens Manual Focusing Ring Replacement Repair Part.

I dropped my Canon 70-200 F/2.8L (non-IS). Although it seems to focus accurately and the optics seem fine, the zoom ring is stuck. The outer zoom grip is broken. Canon at first wanted $273 to repair the lens, then changed its mind and wanted $1,200. I tried to explain that cost is more than the lens is worth and that I could buy one in better condition for less money than the repair cost. They would not budge and would not repair just the zoom ring.

So, I have the lens back now and have decided to open it up and try to do as much of the work as possible. Can someone recommend a YouTube or other video, Web site or other source of do-it-yourself Canon 70-200 repair information?

After opening it up, I see no damage to anything except the beige outer housing that contains the AF/Manual switch and that damage is not enough to render the lens unusable. Even after I removed the zoom barrel, it would only turn, maybe, an eighth of a cycle. I need to go back now and figure out how to get at the two-piece gear mechanism and see if I could, order a new gear assembly and get this working again. Of course, I will probably need to order a ribbon cable or two (pulled a couple loose in the disassembly), a screw (lost) and figure out where the ribbon cables re-attach.

I will also consider selling it for parts. Optically and in AF, it is excellent. Assuming you haven't found these already.

1 - the parts manual isn't a step-by-step service manual, but it's 'exploded views' and part # ID is very helpful. 2 - This brave soul has documented his disassembly of the EF 70-200 f/2.8L: There are a couple time-lapse videos on youtube of disassembly/reassembly of 70-200 f/2.8L and IS, but they go by too quickly to be a good DIY guide. Bob Markey II wrote: After opening it up, I see no damage to anything except the beige outer housing that contains the AF/Manual switch and that damage is not enough to render the lens unusable. Even after I removed the zoom barrel, it would only turn, maybe, an eighth of a cycle. I need to go back now and figure out how to get at the two-piece gear mechanism and see if I could, order a new gear assembly and get this working again. Of course, I will probably need to order a ribbon cable or two (pulled a couple loose in the disassembly), a screw (lost) and figure out where the ribbon cables re-attach.

I will also consider selling it for parts. Optically and in AF, it is excellent.

Filmluvr wrote: I don't mean this to sound condescending, but the very fact that you have to ask this question means you won't be successful working on the lens. I speak from experience when I say that the disassembly/reassembly of zooms is not at all what you're hoping it will be. You really should consider selling it as-is on eBay and buying a new or used replacement. Having successfully repaired a third-party zoom lens, let me say that it almost did not work. Hp Insight Management Wbem Providers Software As A Service there.

Almost had a $700 brick. Research, research, research. Go slow and step-by-step. Have a place for everything so you can reverse the order easily. Take pics before and after each step. Yeah it's a pain, but on such a high dollar lens, could be worth it.

Tvs Msp 250 Champion Printer Driver Xp. Hope it works out for you. Came into this thread late, otherwise I would have recommended these people; They have the 70-200 f/2.8 repair manual for purchase.