its less then 3 years old and the unit is perfect i went and had it tested and nothing is wrong with the ballast its my end caps and wires that have to all be fixed, i wanted it to be the ballast because then i could have just bought a new ballast but with the work it will take and labor on my old stuff being taken off and all new stuff its cheaper to buy a whole new lighting system, for me at least. make me an offer,