Why does my Nikon D200 keep on zeroing out?

Both my Nikonova D200 keep on zeroing out my f stop and my ISO. I have to shut it off and on till it goes back to my settings. I do not wish to send it back to Nikon because I know it'll cost me. So I want to know if I can fix it myself or send it to a camera repair shop or person.

I'd get estimates from both the local camera shop and the Nikon service center. If they are close, I'd go with the Nikon service center.

1--Unless you yourself are an experienced and skilled repair tech, there's no way that you could repair this yourself. It is either a board level electronic problem or something fairly simple with the lens mount but even if the second issue is the one, you have to have some very specific knowledge to determine this.

2--The D200 is a pretty old body as DSLR's go. It was a good one and I still have one kicking around my house for back-up but you have to accept that repair could easily outweigh the couple hundred dollars the camera might be worth.

3--You don't mention what lens(es) you are attempting to use. If you are using a non-cpu lens, the camera can't read the maximum aperture and you have to program that in. If it is a cpu lens but has a physical aperture ring, you need to lock it at the smallest aperture in order for it to communicate with the camera. All this is in the manual for the D200. Both my Nikonova D200 keep on zeroing out my f stop and my IS

4--What do you mean by this anyway? "Both my Nikonova D200 keep on zeroing out my f stop and my ISO". Both? Are you talking about two D200s? What is a "Nikonova"? What doez "zeroing out" mean? The camera is setting the aperture and ISO to 0? Do you have it set to full manual? Full auto? What? When discussing cameras, one must speak clearly with specific details.

Best of luck and please don't forget to vote for a Best Answer

Nikon centre worldwide offer very competitive fixed price repair menus.

What you describe is not user repairable, and good luck finding many independent repairers able to cope with modern digital cameras and fully equipped with the latest special tools, software and service bulletins.

It's very possible that your fault may be due to the failure of an internal memory battery or a capacitor used for the same job. Either way, there's no free repairs so one way or another if you want it fixed then you need to pay.
You might even get lucky: some faults are known materials/manufacturing defects from new which may be covered by a "soft recall" policy. If so, when users request repairs for those issues, Nikon do them free except for shipping. I've recently had a fault on an ancient D70, long out of warranty, repaired free by Nikon UK and while doing it they also upgraded the firmware as well.

A repair shop or person won't do it for free either.