There is a place in Vegas that will do it, but it would take almost an entire morning for me to get there and get back. They said they would troubleshoot it free, but if the unit itself is faulty, they would want to replace it. That would be $149 including tax and labor.
The problem for me is equipment. The radio in our mini-van isn’t working and it’s not a fuse. That’s all I have equipment for checking easily. After that I need a bench with the proper wiring to hook up power and speakers to know if it’s the unit itself or the connections to the speakers.
I probably have the money to get someone else to do that, just not the inclination. I’m hoping to sell the mini-van soon and let someone else deal with it.