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This thread was one of the reasons I got mine last year and I really don't regret the purchase even though shutter exploded last winter. The build quality is impressive and these are really designed to be fixed forever.

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My best guess is shutter curtaim tensions set to moon. Basically camera didn't have enough brake force and it hammerer this part in two. Repairing camera professionally turned out to be difficult or really expensive so we machined new part out of aluminum and It's been working well since.

And I'm aware about collapsible lenses. Luckily this summicron doesn't get even close the sensor arm.

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Edited by Hintsalae
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5 hours ago, Hintsalae said:

My best guess is shutter curtaim tensions set to moon. Basically camera didn't have enough brake force and it hammerer this part in two. Repairing camera professionally turned out to be difficult or really expensive so we machined new part out of aluminum and It's been working well since.

Yeah, as you said you bought the camera about a year ago. You don't probably know how the previous owners of the camera have abused it during the past 40+ years.

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  • 1 month later...

M5 love 😊

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On 10/7/2021 at 7:24 AM, Hintsalae said:

My best guess is shutter curtaim tensions set to moon. Basically be camera didn't have enough brake force and it hammerer this part in two. Repairing camera professionally turned out to be difficult or really expensive so we machined new part out of aluminum and It's been working well since.

And I'm aware about collapsible lenses. Luckily this summicron doesn't get even close the sensor arm.

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actually it was very well documented that the M5 below a certain serial number all had potential problems with cracking shutter drums. This is what happened here.

it got corrected in production run. There is a specific serial number breakpoint to look for. I can’t remember what SN but a google sesrch might help.

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I remember when the M5 was new.  As we all know it was bigger than the M4 so the black M5 was preferred as it didn't appear subjectively as big as the chrome version.  The black chrome on subsequent cameras was not to the same standard as the M5.

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On 11/14/2021 at 5:52 PM, Capuccino-Muffin said:


 

actually it was very well documented that the M5 below a certain serial number all had potential problems with cracking shutter drums. This is what happened here.

it got corrected in production run. There is a specific serial number breakpoint to look for. I can’t remember what SN but a google sesrch might help.

Mine was from corrected production run if the serial numbers are tellingthe truth.

And If I recall correctly the problem was shutter drum axle. The rivet which holds bottom gear assembly on place created weak point to shutter drum axle.

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  • 2 months later...

 

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Edited by Huss
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13 hours ago, hektor said:

What do you chaps use as batteries?

In one, I had the M5 modified when CLA some years ago to use the modern 1.5V to have peace of mind.

 

Another one, I use 675 (PR44) hearing aid batteries 1.4V which have short life, so I peel off the "air hole protect" only when I put in use.

These work also for Leicameter MR when I fancy to use, but in real life, I use something else, hand hold meters which can be used with 1xAA bat.

Not practical, short "use by...", I have many expired 675 sets that I even don't know if I can use or not.

Edited by a.noctilux
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vor 14 Stunden schrieb hektor:

What do you chaps use as batteries?

I bought an adapter for the SR 44 Silver Oxide Battery in 2016. It reduces the voltage from 1,5V to 1,35V, and it still works fine.

You might write to Frans de Gruijter:  battery.adapter@online.nl

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I ordered somewhat illegal mercury batteries from russia last summer. I took some filing to fit properly but works perfectly now. I have some Bat43 diodes but those are still waiting to be installed. Diodes and adapters are best diy solution but I didn't like how much temperature fluctuations create inaccuracies with them.

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