mh lamp issue

[KushBlower12]

My 400 watt mh lamp is taking forever to light up. And Im not talking like a minute, sometimes more like an hour. I can see that the bulb is getting power because it faintly lights up. Is this normal or is the lamp defective?

 

[dasweasle]

perhaps you are not getting a good connection, maybe but dont hold me to this but maybe put vassoline or something like that on the male part of the bulb to get a better connection?

 

[mrniceguy]

this may or may not be your problem....
i got this from a sticky on this site

" HPS (High Pressure Sodium) lamps can burn in any orientation. MH (Metal Halide) lamps come in three basic types: *Base up (BU), which must be operated in the base up position. *Horizontal (HOR), must be operated in the horizontal position. *Universal (U), which may be operated in any position. Orienting metal halide lamps in burning positions other than those specified can result in severe reductions in performance and potential nonpassive failure. Lamp life,light output and color can be affected by the burningposition."

hope this helps

 

[SkSMaN]

What kind of MH is it? Pulse start?