Great idea, I would be glad to list this on my wiki for anyone willing to do for a fee or as "warranty" work if BTmine agrees. If no one is interested, I would be as a former RF Engineer. It would be great if we had several people who could offer this service.
These Chinese units will soon be flooding the market and sadly, I do not believe our experience will be unique. That's is why I created the wiki.
http://www.newworldz.net/Chinese_Avalon_Clonesmtnminer
If shipping broken units back is not working out, it might make more sense to see if there is a trusted member here who could do the repairs nearby (same country would be good). This is what was done with Drillbit boards that needed some repairs. Drillbit paid for the repairs in that case. I don't know if BTMine will offer to do this but it would go a long way in terms of building some trust back.