I have used myrig in the past to repair an R4 with a bad board.
I just contacted them again to repair a faulty S17. They did respond and gave me a repair ticket#. Also their ship to address is the same as the last time I used them.
I will report back on my experience with them.
I received a notice today that they have need repaired and bill for service. I paid and they have it labeled and ready to ship back to me. Will update this again when i receive it and plug it in to test it out.