Good responses from JJP, so this is purely constructive...
It's 2014, and it's absurdly cheap and easy to create/distribute high quality videos or tutorials on how to do basic troubleshooting/repairs/part replacement. I think a large number of "non pinheads" would be ok with digging in and doing a repair if their hand was held the whole way. You could even send them a $20 tool kit with a soldering iron/nut drivers along with the part.
I'd imagine most of the repairs/issues are similar or identical. It really wouldn't take as much time as it might seem to send a customer a video of how to do their exact repair once the problem is identified.