Fluorescent light wont work after replacing starter and bulb
There is also a ballast that can go bad. try turning off the power and removing the starter, then clean the contacts for the bulbs. sometimes there is corrosion or oxide buildup stopping the flow of electricity. However most newer lights no longer have starters it's built into the ballast, So I'm guessing this is an older fixture and that makes the probability of a bad ballast much higher. be aware that the starter can contain high voltages like a capacitor. do not attempt cleaning without removing the starter and turning off the power.