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Very Old Bonusline Lamp
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This February 1962 MV lamp, removed in 2010-2011 from a Line Materials Unistyle 400 was not powering up at all when I first got it.
I tried a lot of different ballasts on it. No go on 400 watt MV/MH ballast, no go on 400 watt HPS ballast, nothing on 350 watt pulse start MH ballast, It didn't do anything much in a high voltage 5000 volt transformer. It only worked once on 1500 watt MH ballast but after trying again, nothing at all.
I did something VERY SPECIFIC to make it work again. But that remains a mystery!
Here this old lamp now is willing to fire up again and light up rather dimly but beautifully!
Thanks to a lineman friend for giving me this from his collection!
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Also this device he had was really noisy
@ Ian, no the box in the pic is a normal 400 watt MV/MH ballast
@ Aaron, yes I showed you something, but it was not the only thing I did either, there was more to it!
@ Joe, my NST is dead...so I don't have one anymore....