The same issue with a unit 18 months old and now used for the first time on a job. After about 1 hour the fizzling out of all three beams started and quickly became a completely useless unit. Although guarantee is stated as 1year I will try for a solution with my dealer, but I am forced to buy another unit to continue the job,
It will NOT be a Bosch brand, and neither will ANY new tool I ever buy be Bosch again.