Quoted from Homepin:That still won't fix the connector issues. Replacing the board isn't the answer here.
I would suggest paying a technician a couple of hundred to fix your issues correctly and completely.
Watch him as he fixes things - most techs will be happy to show you what they are up to.
It might be the best few hundred you can spend long term. Sometimes you just have to accept that some things are beyond your current level of expertise.
This is the best advice in this thread. Update your location and maybe a local pinsider can help/teach you or, at the very least, help you find a local tech.
Try to learn from the tech by asking questions and observing. Maybe even pay for an extra hour of their time to teach you some basics. You'll learn valuable info and be able to enjoy your game much faster. Money well spent.