Perform system check where we found that the controller had gone bad not allowing zones four through eight to operate due to no fault is being sent out. We replace a controller in addition to 13, 6 inch heads that were replaced due to bad coverage, eight risers that were swapped out with 6 inch heads, five straightening of heads, five nozzles that were clogged or the wrong ones, and two empty nozzles. Full system check was performed after repairs were made finding out for the repairs needed