@byronwoodcock could be a bad main board or a simple issues with the battery connectors etc. Time to disassemble your camera by using something like [https://www.youtube.com/watch?v=h-MSrBt2JLc|this video]. Then perform a visual inspection. Check for components that my look charred or missing. Torn flex cables or corroded connectors are all pretty common.You can always post pictures of what you find with your Question. That way we can see what you see.
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