Author Topic: A900 failure.  (Read 4327 times)

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Offline Faldrax

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A900 failure.
« on: November 24, 2013, 10:16:33 PM »
Out today taking photos of my daughter and her friends as part of her (early) birthday party, when suddenly the viewfinder went black.

Powering down and removing the lens I found the mirror had detached from it's mechanism!
It looks like it is basically glued in place with 4 spots of glue. The mirror and assembly appear to be all OK, just detached from each other :(

Will be phoning Sony Support in the morning to see if they can repair it (and how much).
It is difficult to explain to white mice that black cats are lucky...

2 x A900/VG, A6000
CZ 16-35 f/2.8, Sigma 24-70 f/2.8 HSM, Tamron 70-200 f/2.8 Di USD, Sony 70-300G,
Tamron 150-600, Sony 50 f1.4, Minolta 85 f1.4 G RS, Sony 100 f2.8 Macro
Manfrotto 055CXPro3 + 410 Junior Geared head,
Flickr : http://www.flickr.com/photos/36503683@N08/

Offline AScot

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Re: A900 failure.
« Reply #1 on: November 24, 2013, 10:40:13 PM »
I have never had that happen with any camera, so not sure of exactly how the glue is applied. It would seem to me that four spots of glue could be applied at varying thickness's and if so would ultimately decide the position of the mirror, closer or farther from the lens mount and up or down. It may only require a fraction of a mm to make it throw out the image on the screen. Also, in the film days Minolta had a small mirror that controlled the focusing in some way. Does Sony do the same or have they incorporated it into the main mirror? I don't know, but if they do, then the focussing may have to be reset also.

I am unable to check my A850 to see how it works as I have left it at my daughters. To me glueing the mirror does not seem to be a very high tech solution.
Sony A7, A850, A77, A700 || Sony>> 70-300G, 28-75 f2.8 SAM, 16-80CZ, 50 f1.4, FE 28-70 OSS, FE 24-70CZ f4 OSS, LA-EA4 || Minolta>> 300 f4 G HS, 200 f2.8 G HS, 100 f2.8 (D) Macro, 50 f1.7, 28 f2.8, 28-135 f4-4.5, 70-210 f4, 500 f8 Reflex, TC x 1.4 HS, TC x 2 HS. || Sigma 21-35 f3.5-4.2. || Tamron SP 24-135.

Offline Faldrax

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Re: A900 failure.
« Reply #2 on: November 24, 2013, 11:08:05 PM »
I don't think you'd be able to see from a complete unit - where it looks like the glue was used is between the back of the mirror and the front of the frame it sits in.

Edit: Just Googled 'A900 Mirror detached' and found a couple of other cases where the same thing happened - the mirror just 'fell out' and both say it looked like it was just glued in place.
« Last Edit: November 25, 2013, 09:49:07 AM by Faldrax »
It is difficult to explain to white mice that black cats are lucky...

2 x A900/VG, A6000
CZ 16-35 f/2.8, Sigma 24-70 f/2.8 HSM, Tamron 70-200 f/2.8 Di USD, Sony 70-300G,
Tamron 150-600, Sony 50 f1.4, Minolta 85 f1.4 G RS, Sony 100 f2.8 Macro
Manfrotto 055CXPro3 + 410 Junior Geared head,
Flickr : http://www.flickr.com/photos/36503683@N08/

Offline Faldrax

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Re: A900 failure.
« Reply #3 on: November 25, 2013, 01:30:49 PM »
Update: Booked to be sent to Sony for fixed price, £147 inc next day courier service. I theory, it's a 3 day repair service, then couriered back to me. I'll update when I know more.

Sony have now confirmed receipt.
« Last Edit: November 28, 2013, 10:42:57 AM by Faldrax »
It is difficult to explain to white mice that black cats are lucky...

2 x A900/VG, A6000
CZ 16-35 f/2.8, Sigma 24-70 f/2.8 HSM, Tamron 70-200 f/2.8 Di USD, Sony 70-300G,
Tamron 150-600, Sony 50 f1.4, Minolta 85 f1.4 G RS, Sony 100 f2.8 Macro
Manfrotto 055CXPro3 + 410 Junior Geared head,
Flickr : http://www.flickr.com/photos/36503683@N08/

Offline Faldrax

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Re: A900 failure.
« Reply #4 on: December 06, 2013, 11:09:34 AM »
Well, after 4 days I phoned and was told the service was typically 5-10 days...

However, just had a phone call to say it's all fixed, and will be couriered back to me for Monday :)
It is difficult to explain to white mice that black cats are lucky...

2 x A900/VG, A6000
CZ 16-35 f/2.8, Sigma 24-70 f/2.8 HSM, Tamron 70-200 f/2.8 Di USD, Sony 70-300G,
Tamron 150-600, Sony 50 f1.4, Minolta 85 f1.4 G RS, Sony 100 f2.8 Macro
Manfrotto 055CXPro3 + 410 Junior Geared head,
Flickr : http://www.flickr.com/photos/36503683@N08/

Offline chappo1

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Re: A900 failure.
« Reply #5 on: December 06, 2013, 09:44:34 PM »
Good news.  We await the results.....john
“Time is a great teacher, but unfortunately it kills all its pupils."

Hector Berlioz

Offline rannari

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Re: A900 failure.
« Reply #6 on: December 07, 2013, 08:16:28 PM »
However, just had a phone call to say it's all fixed, and will be couriered back to me for Monday

Wonderful news! Sounds little odd if the mirror is just glued...

kurt
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Offline Faldrax

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Re: A900 failure.
« Reply #7 on: December 09, 2013, 03:22:29 PM »
Camera is back, all looks OK, but I'm at work so can't really do a proper test.
Feeling happier :)

It is difficult to explain to white mice that black cats are lucky...

2 x A900/VG, A6000
CZ 16-35 f/2.8, Sigma 24-70 f/2.8 HSM, Tamron 70-200 f/2.8 Di USD, Sony 70-300G,
Tamron 150-600, Sony 50 f1.4, Minolta 85 f1.4 G RS, Sony 100 f2.8 Macro
Manfrotto 055CXPro3 + 410 Junior Geared head,
Flickr : http://www.flickr.com/photos/36503683@N08/