Bought a 3' x 4' pepsi sign to hang inside the garage at a swap meet. Hooked it up and it worked great for awhile. Old sign from back in the 70's I would guess.
Low and behold a few days later it quit working. Assumed the ballast was toast as it was very rusty. It is so rusty that I cannot make out any identification.
Anways, it has qty 3, t/12 42" HO bulbs in it.
Had nothing to lose and tried a new spare ballast that I had left over from a previous project. Used a ballast that was intended for a qty 2 bulb 8' T-12 HO.
It works fine but only two of the 3 bulbs light up. The 3rd bulb is not blown as I rotated them inside the sign to confirm this.
Wondering if maybe thats how it works. You have two bulb ballasts and 3 bulb ballasts. Maybe not. I dont know. Seems it would have worked tho. Perhaps there is a way to wire this. I connected the yellow to yellow, blue to blue, red to red....
The sign actually works very well even with just two bulbs running. No buzzing.
Thinking perhaps there is a way to re-wire this. Maybe not. Just asking.
Low and behold a few days later it quit working. Assumed the ballast was toast as it was very rusty. It is so rusty that I cannot make out any identification.
Anways, it has qty 3, t/12 42" HO bulbs in it.
Had nothing to lose and tried a new spare ballast that I had left over from a previous project. Used a ballast that was intended for a qty 2 bulb 8' T-12 HO.
It works fine but only two of the 3 bulbs light up. The 3rd bulb is not blown as I rotated them inside the sign to confirm this.
Wondering if maybe thats how it works. You have two bulb ballasts and 3 bulb ballasts. Maybe not. I dont know. Seems it would have worked tho. Perhaps there is a way to wire this. I connected the yellow to yellow, blue to blue, red to red....
The sign actually works very well even with just two bulbs running. No buzzing.
Thinking perhaps there is a way to re-wire this. Maybe not. Just asking.