Assistance with Ballast repair

[Jerry Anderson]

I had someone in to repair some lights about 7/8 months or so ago. Now 9 of the repaired units have bad ballasts that either started smoking, or actually caught fire. I opened one of them up and would like your thoughts on my findings.

The ballast is a M59 metal halide 400W. (probe start) It looks like the previous guy that did the work changed the light socket to accept pulse start bulbs. Would the use of the pulse start bulbs with a nion pulse start ballast cause this failure over time?? I don't want to just simply replace the damaged ballast's and have these lights fail again in another six months.

 

[charlie b]

I am closing this thread in accordance with forum rules. This forum is intended to assist electricians, contractors, inspectors, engineers, and other members of the electrical profession in the performance of their job-related duties. We are not permitted to help a person who is not an electrician, and who intends to perform electrical installation work in their own home.