My most recent purchase had a hack where someone used a speaker wire to make a bridge. I have gotten to the point where I assume it isn't the sellers fault with the hacks and I have yet to buy a machine that didn't need something major (board work, connectors, ramps, missing wires, etc...)

I will admit that I have covered soldered wire splices with electrical tape, this is the function of the tape and why it is called electrical tape.

The only reason I know how to troubleshoot problems is due to all the problems machines have when I bring them home. I find that I spend more time fixing machines than I do playing them, and I know it is time for a new machine when they are all playing properly.