How to repair Canon lens EF 24-105 F3.5/5.6 STM IS - damage by hit(poor resolution) 

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I have a gh5 camera whose LCD touch is not working properly because some time ago the LCD got pressed from the corner and some pixels became dead, although at that time the touch was working properly but now when I am continuously using the camera. So it is not working at all, it just works sometimes. Now do I have to change the entire LCD or is the problem something else, please help me.