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 Moderated by: chrisbet, Page:  First Page Previous Page  1  2  3  Next Page Last Page  
Latest acquisition - D810   -   Page   2
Another repair project  Rate Topic 
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Posted: Thu Aug 28th, 2025 14:38
 
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Eric



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novicius wrote:
I remember Eric`s hair raising D3 / 24-70 encounter with said staircase...remembered it vividly when my own D3S tumbled on the wooden kitchen floor with a 24-70 vr on it,luckily nothing happened ( the floor got dented )....I hope that you can fix it, as it sounds do-able.
I still wake up in the middle of the night in a cold sweat. :lol:



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Posted: Thu Aug 28th, 2025 15:10
 
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chrisbet



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Still waiting on the spring that goes under the mount and three more screws to be fitted but "looking" better!



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Posted: Thu Aug 28th, 2025 20:42
 
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jk



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chrisbet wrote:
The mount turned up today and is temporarliy fixed for testing - camera working fine with G type lens but fEE with D types - issue on the aperture ring methinks ....

But here is a pic taken with my one and only G lens



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If you get the FEE error that implies that the little lug on the AFD lens is not engaged.  Is that your assumption/assessment as well?  
I can send you some pictures of the throat of my D810 if that helps.



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Posted: Thu Aug 28th, 2025 22:53
 
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novicius



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Ooh, Well Done !....and now surely the Missus will understand that G-lenses need to be acquired....:applause:



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Posted: Fri Aug 29th, 2025 09:20
 
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chrisbet



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Thanks for the offer JK, my D610 is exactly to same as the D810 in this area - many of the parts are interchangeable.

The issue lies much deeper than the tag on the ring - I am a perfectionist when it comes to mechanical things and further (inevitable) dismantling and inspection reveals, as I suspected, a problem with the F-FO base plate module - it has been damaged and needs replacing - already on order from the US! 



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Posted: Fri Aug 29th, 2025 10:29
 
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jk



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Well done at finding the issue.
You should be able to source parts from Nikon UK or an approved repairer.
Have you tried ACS in Norfolk?  Both Eric and I have used them in the past.  Very good service.



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Posted: Fri Aug 29th, 2025 12:34
 
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chrisbet



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Thanks for the suggestion but I have already sourced an original Nikon replacement.

Closer inspection of the damage suggests to me now that this wasn't the result of a fall but maybe a jammed lens that someone attempted to remove themselves by inserting a sharp object between lens and camera. There are a few reports on the web about Tamron lenses being prone to loose mount screws that then jam the lens on its mount.



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Posted: Fri Aug 29th, 2025 13:40
 
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Iain



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Eric wrote:
That looks excellent. Well done. Definitely beyond my skill set. :bowing:
And mine too. Looks like you will get there Chris.

 




Posted: Fri Aug 29th, 2025 22:10
 
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Bob



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chrisbet wrote:
Was hunting for an affordable D850 to fix up but even ones with top and front casings smashed were going for best part of £500!

But I have just picked up a D810 for £200 - has had the lens mount snapped off but enough of the mirror box front face remains to get a replacement spring and mount correctly aligned. The camera has arrived so I just wait for the spares to turn up.

I have black structural methylacrylate glue which will reconstruct the missing parts and secure the mount screws in their holes. If that doesn't work out then I can get a replacement box and have the fun of swapping it all over - full dismantle - I will try and avoid that if I can :lol:

Testing with a spare battery shows everything else is OK and it has a 73k shutter count.



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You might like to take a look at this: https://www.mdpi.com/1996-1944/16/9/3386 .It's a paper on the material properties of  a polycarbonate material

 




Posted: Sat Aug 30th, 2025 08:25
 
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chrisbet



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There are plastics and there are plastics ... Nikon says the plastic used in the mirror box is carbon fibre reinforced.

The design has its limitations, it may reduce weight and shutter vibrations but the design is flawed, the screws holding the mount in place are short and skinny, the plastic is finely moulded and liable to break if subjected to excessive force.

Longer screws threaded into a nut imbedded deeper in the moulding would be better and spread shock forces. Better still would be a front "plate" carrying the mount which could be changed without total disassembly of the entire camera!

The magnesium casting of the D800 / 850 and D series is much more robust.

Just don't drop D810s!



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