ya, check ur fuse, try use the spare 10A fuse, if dun have, u can pluck out ur high beam fuse to try.(must use the same 10A) if it's working, den just buy a new fuse. if it's not working, den should be wiring le.. but most probably is fuse.
i have the same problem. driving a jazz '04.
changed fuse, bulbs still same. stamford say wiring problem.
any other workshop to recommend? cos stamford say might take one whole day or two to rectify problem