kniquy
Member
I have 2 96W PC square prong units that are running off one power source. First only one didn't work but now both will illuminate the bulb but not properly light. I am assuming it is a bad ballast. They are about 4 years old. I don't know how long they are suppose to last. I am wondering if anyone has ever changed them. Someone had told me that i can buy them for about $20 each. Is it worth changing them or should i just look into purchasing a new unit. I am 99% positive that it is the unit and not the bulb. I tried a good bulb in each.