FIIO support just sent me the cap value. I will have to look if have a similar cap just to make test. If it works .. great, if not I will send it back to FIIO for service, They don't have a replacement board to send me, but no problem.
I have to tell, FIIO support is really good. They are always trying to help, I really liked. I was thinking about getting a X5 and just decided I will get a X5. Thumbs UP for FIIO!