I agree 100% with this. Do some actual learning. Not taking a "shortcut"... Actually your post was the only post that did deal directly with OP's post. And I think you are spot on with your assessment of actually doing some work and some troubleshooting. And as you can see, OP dropped this thread and then left. Didn't say antyhing else about what he was doing or trying."There has not been a single post that responded to the actual content of OP's post."
Okay, fair response, how about try cleaning the switches. Probe the signal paths with a scope. Read the service manual, teach yourself something about electronics. Buy a DMM, it's a long list