Canon 60d dropped down / false exposure metering

All photos were overexposed. I suspected, that the exposure metering unit has been damaged. After disassembling the camera, I have found this:

IMG_6160

(it was not separated in this manner, but it was no more on its normal position on the transparent base. The sensor is pressed down by a metal clip, but in the same time held in place with to drops of glue. The glue has been cracked.)

IMG_6161

The lens has to project the image on the matte on the matrix made of the  exposure measuring sensors. A small projector. This is the sensor matrix:

exposure block circle 

If it is not centered, the measuring will be of course false. The problem was, that the glue has been broken – so, how to get the right position?!?!?

Fortunately, on the surface of the transparent plastic remained a mark from the old glue.

exposure block arrow 

Red arrow the mark, blue arrow the glue itself (you can put them together, they will fit).

I positioned the sensor in the right position under a microscope, and then I applied two drops of my favorite Loctite 3090 glue (2 component cyanacrilic adhesive – hardening in 5 minutes…)

exposure glue

 

And the camera works perfect!

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About canonrepair

Ruzsa János. Amatőr fotós, Canon DSLR váz. Amateur photographer. Canon DSLR user.
This entry was posted in Canon camera. Bookmark the permalink.

4 Responses to Canon 60d dropped down / false exposure metering

  1. Viktor says:

    Better use gloss acrylic varnish.

  2. canonrepair says:

    I think it does – but in this case it was no danger. I have seen the foggy coating in case of mounting a lens in a plastic tube, but I could clean it easily.

  3. Filip says:

    Does that Loctite cause fogging on the near by surfaces while curing, like other cyanoacrylate glues does?

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