so basically, when i turn it on it repeatedly vibrates on and off, and on closer inspection a slight grinding sound can be heard within the main body, this happens for about 20-30 seconds before it stops and then charges up, the flash then will fire, except none of the top 4 buttons on the back of the unit will work.
i'm not sure about how it happened as my friend borrowed it and it came back broken, sounds dodgy i know, but apparently this is what it was like when he first turned it on
im not really sure what to do about this problem, any help/advice would be greatly appreciated
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