Button inputs mixing and matching

I was playing an online game and got so angry that I threw my favourite controller, 5 years old, on the floor full force. I regret it terribly.

I've opened her up many times to change worn out rubber padding. I opened her up again, saw nothing wrong except a broken metal weight on the lower left. Put her together. I use her on PC, so i checked the inputs and they were fine on windows. I check them in game and button inputs are mixing, I press SQUARE and the results with be SQUARE TRIANGE. Or I press R1 and Ill get R1, CIRCLE and CROSS output results. I suspect the green motherboard inside is faulty or needs a replacement? What do think?