Home · Register · Search · View Winners · Software · Hosting · Software · Join Upload & Sell

Moderated by: Fred Miranda
Username   Password

  New fredmiranda.com Mobile Site
  New Feature: SMS Notification alert
  New Feature: Buy & Sell Watchlist
  

FM Forums | Canon Forum | Join Upload & Sell

1
       2       end
  

Archive 2012 · Do-it-yourself Canon 70-200 Repair Info?
  
 
BobMarkey
Offline

Upload & Sell: Off
p.1 #1 · p.1 #1 · Do-it-yourself Canon 70-200 Repair Info?


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?

Thanks.



Feb 18, 2012 at 05:11 AM
svassh
Offline
• • •
Upload & Sell: On
p.1 #2 · p.1 #2 · Do-it-yourself Canon 70-200 Repair Info?


Here's the # to Canon Parts: (732) 521-7230. They will sell you parts and I believe they can even send you a PDF of a lens parts blow out to help you identify what you need.


Feb 18, 2012 at 06:00 AM
JimboCin
Offline
• • •
Upload & Sell: Off
p.1 #3 · p.1 #3 · Do-it-yourself Canon 70-200 Repair Info?


Here are some photos of the lens taken apart
http://www.facebook.com/media/set/?set=a.10150411859964572.444042.158855179571&type=1

Repair manual - $20.00
http://www.photobooksonline.com/books/manual01CANLENS.html

A video for the Canon 70-200 f/2.8 IS. It should give you an idea of what is involved.
http://www.youtube.com/watch?v=sLXna6cThFA

Another option is to try Midwest Camera Repair - look HERE.



Feb 18, 2012 at 06:16 AM
jetmutant
Offline
• • •
Upload & Sell: On
p.1 #4 · p.1 #4 · Do-it-yourself Canon 70-200 Repair Info?


cool stuff, I have been too chiken to tear one apart...


Feb 18, 2012 at 06:24 AM
soupcxan
Offline
• •
Upload & Sell: On
p.1 #5 · p.1 #5 · Do-it-yourself Canon 70-200 Repair Info?


Do you have a lens collimator? Why not send it to someone who has less than a 99% chance of irreparably breaking it, like KEH, who will give you a free estimate?


Feb 18, 2012 at 07:48 AM
BobMarkey
Offline

Upload & Sell: Off
p.1 #6 · p.1 #6 · Do-it-yourself Canon 70-200 Repair Info?


I do not have $500, much less $1,200 to fix this lens. It is useless in its current state, so what do I have to lose?

Before I read these replies, I took it apart tonight. I missed a step or two and I think I messed up the ribbon cables. I also lost a screw. I wish I had read the rest of this thread before opening it up. I tried to follow the steps one guy made on a YouTube video, but he he didn't really show how to take it apart.

So, I've made matters worse.



Feb 18, 2012 at 08:37 AM
schlotz
Offline
• • • •
Upload & Sell: On
p.1 #7 · p.1 #7 · Do-it-yourself Canon 70-200 Repair Info?


...too late now, unfortunately




Feb 18, 2012 at 02:36 PM
pegger
Offline

Upload & Sell: Off
p.1 #8 · p.1 #8 · Do-it-yourself Canon 70-200 Repair Info?


Sell it for parts on ebay


Feb 18, 2012 at 02:46 PM
EB-1
Offline
• • • • • • •
Upload & Sell: Off
p.1 #9 · p.1 #9 · Do-it-yourself Canon 70-200 Repair Info?


pegger wrote:
Sell it for parts on ebay


+1

EBH



Feb 18, 2012 at 02:56 PM
leftymgp
Offline
• •
Upload & Sell: Off
p.1 #10 · p.1 #10 · Do-it-yourself Canon 70-200 Repair Info?


I was in a similar situation. I dropped my 70-200 2.8 nonIS and the zoom ring was stuck. Well, at first it would still turn, but with a lot of resistance. But then it just quit turning. I sent it in to canon, but they repaired it for what I believe is now their standard rate. After shipping and taxes it came out to be around $400. Expensive for sure, but cheaper than a new one.

So I don't know, maybe yours had more damage inside than mine. Perhaps you can try midwest camera repair and see if they can help?



Feb 18, 2012 at 03:49 PM
 

Search in Used Dept. 



BobMarkey
Offline

Upload & Sell: Off
p.1 #11 · p.1 #11 · Do-it-yourself Canon 70-200 Repair Info?


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, screw and figure out where the ribbon cables re-attach.

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



Feb 18, 2012 at 05:12 PM
wlderdude
Offline
• •
Upload & Sell: Off
p.1 #12 · p.1 #12 · Do-it-yourself Canon 70-200 Repair Info?


BobMarkey wrote:
I do not have $500, much less $1,200 to fix this lens. It is useless in its current state, so what do I have to lose?

Before I read these replies, I took it apart tonight. . . .

So, I've made matters worse.


I guess it's a little late to state the obvious, but it sounds like it did work in a manner similar to a prime lens. Did it get stuck at a focal lenght you never use?



Feb 20, 2012 at 05:57 PM
BobMarkey
Offline

Upload & Sell: Off
p.1 #13 · p.1 #13 · Do-it-yourself Canon 70-200 Repair Info?


Yes, unfortunately, it is stuck at something like 75 to 80 mm. I have an 80 mm 1.8. lens.

With some reading of the repair manual, I can get it back together properly. I might need to pay someone to properly install a couple of ribbon cables, but I had planned to send it to Canon for a check-up after I did any work, anyway.



Feb 20, 2012 at 06:24 PM
drew.bowser
Offline
• • •
Upload & Sell: On
p.1 #14 · p.1 #14 · Do-it-yourself Canon 70-200 Repair Info?


This might be a good reason to sign up for CPS if no one else can fix it.


Feb 20, 2012 at 06:57 PM
BobMarkey
Offline

Upload & Sell: Off
p.1 #15 · p.1 #15 · Do-it-yourself Canon 70-200 Repair Info?


CPS is who gave me the $1,200-plus estimate.


Feb 20, 2012 at 07:29 PM
ZoneV
Offline
• • •
Upload & Sell: Off
p.1 #16 · p.1 #16 · Do-it-yourself Canon 70-200 Repair Info?


Probably a visit on my Photoequipment-Do-it-youself-Directory and a search for "70" would have helped you before you have started the disassembly.
Now I fear things are worse



Feb 20, 2012 at 07:38 PM
drew.bowser
Offline
• • •
Upload & Sell: On
p.1 #17 · p.1 #17 · Do-it-yourself Canon 70-200 Repair Info?


1200 from CPS? you must have shattered elements or water damage... I do not know any other reason it would be so high. I have has IS units replaced, lenses that had broken in half and never paid more than a couple of hundred bucks.


Do you have a detailed invoice you can show us from CPS?



Feb 24, 2012 at 01:45 AM
BobMarkey
Offline

Upload & Sell: Off
p.1 #18 · p.1 #18 · Do-it-yourself Canon 70-200 Repair Info?


I assure you, the elements are fine. The lens did not get wet. The lens focuses fine and makes sharp photos. It just will not change focal lengths.


Feb 24, 2012 at 04:47 AM
BobMarkey
Offline

Upload & Sell: Off
p.1 #19 · p.1 #19 · Do-it-yourself Canon 70-200 Repair Info?


Oh, and CPS has never provided me with details on anything it did.


Feb 24, 2012 at 04:47 AM
Ian.Dobinson
Offline
• • • • • •
Upload & Sell: Off
p.1 #20 · p.1 #20 · Do-it-yourself Canon 70-200 Repair Info?




With some reading of the repair manual, I can get it back together properly. I might need to pay someone to properly install a couple of ribbon cables, but I had planned to send it to Canon for a check-up after I did any work, anyway.



I've reading this thread with my hands over my face ( you know you don't want to look but you can't stop yourself)

Anyway you've got me really confused. I can understand not considering the 1200 'quote' . A question on that point is , did canon ACTUALLY inspect the lens befor they gave that quote? If they did then maybe they know something major is wrong with the lens.

But you then say you planned to send it in after you fixed it , for a check up . Well how much would you expect canon to charge you for this service. .? Let's face it you say you don't have even $500 for the repair , but canon won't check it for free (and they will probably know by the serial what they quoted for the repair in the first place)

You best course of action was and still probably is to send it to a decent independent repair centre (midstate or whatever they are called seem to get used a fair bit). I bet they could get the lens back to perfect for a reasonable cost.



Feb 24, 2012 at 07:53 AM
1
       2       end




FM Forums | Canon Forum | Join Upload & Sell

1
       2       end
    
 

You are not logged in. Login or Register

Username   Password    Reset password