It is potentially easy. If it's a bad spring or a misseated hammer, it's pretty easy, if you're willing to bolt mod it. If it's a bad trace, it is a little bit harder, but still not too bad, if you can get a conductive pen. But it would still require a bolt mod.
I would say it's worth it regardless. Given that broken/for parts/repair minis still go for about $100 on ebay, anyway. At least, that's what the last one went for, as I got outbid at $90.