how you sent the board for repair? 1 hashboard has 6 asics boards on it (3 chains number ie 1,2,3 or 8,9,10 or 11,12,13). Mine is chain 11 is missing. One chain has 2 asics boards, so did you send whole 1 hashboard (6 asic boards)?
Yes, I sent the whole hashboard, you can know which chain in which hashboard by following their guide.