Question about Canon EOS 40D Digital Camera

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Code 99 I am able to shoot an image, it is recorded, then I get a code 99. I recycle the power off, I can shoot another single, then I get the code 99 again. Any quick things I might check before I ship it off for repairs? I tried different batteries, checked the voltage on the 3V battery, it's OK, removed & reseated the lens after checking contacts. Thanks

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6ya6ya
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Posted on Jan 02, 2017

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bmwrider
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SOURCE: Canon A75 won't power on

The only advice I can give is to check for a fusible link close to where the battery cables connect to the PCB. Look for a component with an F prefix eg f1001 or f001. I never desolder the fuse if it's open circuit, I just break a glass type fuse and solder the wire across the surface mount component. Just make sure the fuse wire is the same value as the original.

Posted on Jul 12, 2006

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poolseman
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SOURCE: Canon error code 99

Your camera performs a quick 'integrity' check before each shot and goes into error 99 mode if the lens in incompatible or has a diaphragm problem. ( it will also display e99 if the shutter or flash unit is not ok but this does not apply here ). This is how you can check whether the diaphragm mechanism is ok : attach lens to your old camera and set camera to AV and set F stop to 16 . open back and release shutter and look through the back to see if your lens is closing to F 16. If it is closing fine then the lens is ok but is not compatible with your D400.

Posted on Sep 10, 2007

SOURCE: Error 99 only when flash pops up

We ended up sending the camera in to Canon. $200 unless they find something more wrong. Luckily we have my Nikon D80 still. I will say that Canon replied via e-mail fairly quickly and one paid, said 7-10 business days for the repair.

Posted on Dec 09, 2007

  • 17 Answers

SOURCE: Error 99 Code on 5 month old Canon 40D

error 99 can be several things. Try the following. Check that the contacts on the lens housing are clean if not clean them with a swab of denatured alcohol available at walmart. also if there is extremely cold weather your shutter could be creating the error. Try using a blow dryer and on the warm setting warm up the camera with the lens off. Blow around the mirror area. I know it sounds silly but it has worked in the past. Good luck.

Posted on Feb 20, 2008

  • 10865 Answers

SOURCE: Canon 40d-pressing the shutter seems to short out the camera.

I recommend that you remove both batteries for ten minutes to get a full reset. you spoke of the main battery. When you open the battery compartment, look at the lower right toward the camera with the LCD facing you.
It is a little hard to see, but will say CR2016 3V. Stick your fingernail under the lip and just pull it out.
As I said I left both batteries out for about 10 minutes.
You will have to re-set the date and time after your done.

Posted on Oct 16, 2009

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