Comments on: Canon 300D sub mirror pin failure - Another Story

By: Correspond

Correspond — Thu, 19 Jun 2008 01:13:58 +0000

Somehow i missed the point. Probably lost in translation Anyway … nice blog to visit.

cheers, Correspond.

By: Jeff

Jeff — Sun, 11 May 2008 23:25:57 +0000

I have been useing my 300d with the sub mirror flip up so I could use it in manual focus mode. after about a month the spring came off the main mirror. I used you spring replacement technique and put the spring back on, but when ever I click the shutter the front of the spring comes off and the the coils comes off the pin. and sub mirror is in the way of the sensor. Is these something on the pin that keeps the spring form coming off when the shutter operates.

By: stevencastle

stevencastle — Wed, 07 May 2008 05:52:11 +0000

The pin I refer to is located on the right hand side of the mirror assembly, when you have the camera facing you with the flash above. You can’t really see the pin, it doesn’t protrude into the mirror area. If you look at the third picture in the post, the one with the labels of the mirror area, the pin is located roughly where the label “Spring fits in here” is pointing. Hope this helps.

By: George

George — Wed, 07 May 2008 01:42:18 +0000

Hi,

I’ve now struck this problem too, but what makes it worse is that it wasn’t my camera!

When you refer to the pin, are you meaning the one at the very bottom that holds the main mirror to the casing (looks okay in my case), or is there meant to be another sliding one just above that that connects to the smaller secondary mirror?

Thanks.

By: Jason Piper

Jason Piper — Mon, 21 Apr 2008 09:08:10 +0000

I’m intensely angry at myself for breaking the exact same ribbon cable after taking all the precautions i could.

Luckily now that I have caused this accidental damage, my insurance will cover the repair, which it will not do for gradual/wear and tear or manufacturing defects! a blessing in disguise….

By: yucht

yucht — Wed, 27 Feb 2008 16:35:54 +0000

yeah, it works, thanks

By: stevencastle

stevencastle — Wed, 27 Feb 2008 14:32:06 +0000

No problem.

The spring is straight at one end and hooked at the other, with the coil in the middle.

With the flash on top of the camera facing away from you and the bottom of the case nearest you, when you look into the body you will see where the spring goes on the right hand side.

Hook the coil of the spring over the plastic pivot on the main mirror with the straight section of the spring facing away from you, which should fit into the tiny little groove on the top of the main mirror.

Lift the mirrors carefully and the hooked section will be hanging free underneath. Use a piece of thread tied into a hoop to lasso the hooked end and gently pull it over the top and drop it into the front section of the main mirror, whilst making sure the straight section stays in the groove.

Hope this helps. This is as good a description as any others I have found. Good luck.

By: yucht

yucht — Wed, 27 Feb 2008 13:57:43 +0000

i’m curious about that technique you used to refit the submirror spring, can you please contact me on kuna(at)chello(dot)sk, and provide me with the link or your notes please ?
i’m trying to fix this problem too.

thank you very much …

By: tower

tower — Fri, 22 Feb 2008 14:22:30 +0000

Yes, of course; we were very careful about that orange ribbon cable thanks to your blog.

By: stevencastle

stevencastle — Fri, 22 Feb 2008 12:54:52 +0000

Cool! Glad it went well for you! Did any of this stuff help at all?