Dear Doungjai,
if your EP8 board can be repaired, it will be EUR 192,- repair charge, same cost is for a board in exchange. Repair time will be ca. 2-4 weeks.
In case we send you an exchange board and the old board can not be repaired, we will have to charge EUR 540,- as purchase of used board (EUR 192,- plus balance amount EUR 348,- afterwards).