Author Topic: D200 main/sub-command dial problem  (Read 320 times)

Lorne

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D200 main/sub-command dial problem
« on: December 16, 2018, 21:19:16 »
The main & sub command dials on my D200 do not respond properly. I suspect dirty contacts are the root of the problem but thought I'd ask if anyone else has had similar troubles and how they were resolved.

My Df has been my primary camera since 2013 so my D200 doesn't see much. Funny thing is that the same dials on the MB-D200 battery pack work a treat.
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Birna Rĝrslett

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Re: D200 main/sub-command dial problem
« Reply #1 on: December 16, 2018, 21:23:07 »
Dirt or worn rubber rings. Do consider having the camera serviced while it can be saved.

Lorne

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Re: D200 main/sub-command dial problem
« Reply #2 on: December 16, 2018, 21:32:59 »
Thanks, Birna, but it isn't a mechanical issue with the dials. The dials rotate both directions and the detents feel crisp. But if I am trying to adjust ISO/Qual/WB the response is erratic. For example, when trying to ISO it may jump from 400 to 500, or down to 320, or no response at all. Equivalent response with Qual or WB, too.

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Birna Rĝrslett

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Re: D200 main/sub-command dial problem
« Reply #3 on: December 16, 2018, 21:42:54 »
OK, internal cleaning of contacts then. The symptoms might also point to corrosion of printed boards. Again, have the camera serviced is my advice.

Ĝivind Tĝien

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Re: D200 main/sub-command dial problem
« Reply #4 on: December 17, 2018, 00:02:38 »
The main & sub command dials on my D200 do not respond properly. I suspect dirty contacts are the root of the problem but thought I'd ask if anyone else has had similar troubles and how they were resolved.

I recently had a similar discovery that that the sub-command dial (front) was not working at all on my D200, absolutely no response, complexity dead. Last time it was used (probably many months to a year ago) it worked without a hitch. It has just been sitting there, stored in a nice dry place in my heated cabin together with the rest of my equipment. This does not seem like a symptom of a bad contact on the encoder. I think that would typically lead to a period of unreliable action before it stopped working. There is no  change in the mechanical feeling of the dial. Also does anyone know if those dials use optical encoders or mechanical encoders? I am thinking the problem could be due to aging of some electronic component like a capacitor drying out.

Alternatively I considered whether I had changed a setting that disabled it and forgot about it. However when I switched front and rear command dial in the menus, the aperture that could not be controlled from the front command dial now could be controlled from the rear command dial, while shutter speed became unavailable (in M mode). Well at least it is still usable in A mode with that setting...

Thanks, Birna, but it isn't a mechanical issue with the dials. The dials rotate both directions and the detents feel crisp. But if I am trying to adjust ISO/Qual/WB the response is erratic. For example, when trying to ISO it may jump from 400 to 500, or down to 320, or no response at all. Equivalent response with Qual or WB, too.
This sounds more like a contact problem in the encoder or connections to it as Birna suggests.
Ĝivind Tĝien

Seapy

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Re: D200 main/sub-command dial problem
« Reply #5 on: December 17, 2018, 09:17:50 »
I just checked my two remaining D200's and both command dials function as expected on each camera.

Two thoughts, has the camera been stored with or without a battery? Also is the clock battery OK?

I normally store my cameras without main battery.

I normally have the aperture on the rear command dial, more ergonomic for 'A' mode, for me at least.
Robert C. P.
South Cumbria, UK

Ĝivind Tĝien

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Re: D200 main/sub-command dial problem
« Reply #6 on: December 17, 2018, 10:14:48 »
Two thoughts, has the camera been stored with or without a battery? Also is the clock battery OK?

I store mine with a battery inside. I do not want to run down the clock battery, not knowing what type it is and how well it would take zero charge. I try to check on the batteries now and then rotating them, and so far all my 4 batteries still work. The clock battery is OK.
Ĝivind Tĝien

Seapy

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Re: D200 main/sub-command dial problem
« Reply #7 on: December 17, 2018, 11:57:40 »
My expectation and understanding is the main battery makes no contribution to the clock batterie's duties?

OTOH the camera will gradually drain the main battery, even switched off, I don't want to forget and drain a main battery completely, I charge them from time to time and they serve duty in D300S too, which helps keep them from being inactive.

While concerned for Lorne's D200, I am grateful for this issue being raised, again one more nice thing about NG.
Robert C. P.
South Cumbria, UK

Seapy

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Re: D200 main/sub-command dial problem
« Reply #8 on: December 17, 2018, 12:05:08 »
Hmmm, I  may be wrong...

https://www.fredmiranda.com/forum/topic/1143951

Clock may be powered by a capacitor, recharged over two days by inserting a fully charged main battery.  The plot thickens.
Robert C. P.
South Cumbria, UK

Ĝivind Tĝien

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Re: D200 main/sub-command dial problem
« Reply #9 on: December 17, 2018, 14:51:03 »

Well, if it is a super capacitor it does not hurt it to be completely discharged. So no harm done other than getting messed up clock etc.
Ĝivind Tĝien

Seapy

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Re: D200 main/sub-command dial problem
« Reply #10 on: December 17, 2018, 15:04:55 »
Good point.  :D
Robert C. P.
South Cumbria, UK

Lorne

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Re: D200 main/sub-command dial problem
« Reply #11 on: December 18, 2018, 05:58:44 »
Thanks to everyone for your suggestions. I was hoping for a solution that doesn't require disassembly to resolve but it sounds like a visit to the local repair shop is required.

For what it's worth, my D200 is stored without the battery. I haven't used it much over the past 5 years, but the problem is much worse now.

Again, thanks for your help.
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