I have seven four bulb T8 fixtures in my garage/shop (3 car garage with three fixtures over the workshop bay, 2 over the adjacent bay where one of the cars live, one over the far car space, and an additional fixture over a bump out where my sharpening table is)
One of the fixtures quit on my (unfortunately the one directly over my workbench ) It did pop on after a while the other day, but subsequently it hasn't been working.
This leaves me a couple questions:
1) How can I test the ballast?
2) Can a bad bulb prevent the others from lighting? (I have had some of the bulbs pulled and still no light)
3) is there a recomendation for a replacement ballast? Home Depot has a four bulb T8 ballast for about $27.
4) Should I just replace with LEDs? There was a post earlier this year about using SATCO bulbs. Is that a good replacement? I would go for the ballast by-pass type. Those SATCO bulbs look like about $14 each (5000K, 2200 Lumens), so for the fixture with problems it would be twice the ballast replacement cost.
John