Chosen Solution
My nikon d7200 popup flash doesn’t lock down properly
Make sure that the lever that holds the flash down hasn’t broken or the little piece it hooks to. Check to make sure it moves back with spring tension, and press the button to make sure it actuates the lever. Once you’ve discovered the cause, disassemble it and repair it. You can use this repair manual to get an idea of how it comes apart, even though it isn’t the same model: Nikon_d700.pdf Hope this helps!
