mh blew. bulb or ballast spoilt?

[bubble_gum]

mh just off by itself so hw do i know whether its the bulb or ballast? i got a spare bulb when i bought this set but the buld given to me was faulty anyway

if it is the ballast, issit a staight forward way to replace it? and hw much?

im surprised that only a few months and this pece of second hand equipment fail on me

i bought the mh ard dec last year from a fellow reefer.

[JSNEO]

you may check the contact point first if the contact point is ok it may be the ballest.

But if you can ask a electrician to check will be the best.