Ill go ahead and say it..
alot of people avoid this brand.. IMO
there are a few online retailers that sell alot of this particular brand of product but the reviews are mixed on the quality of the product (and some of the service is kinda scetchy)
Im personaly wondering if the ballast "starter" isnt inline as in external from the unit.. if it is then I would give replacing it a shot.. if not.. I would purchase a new unit..
.. I wouldnt be conserned about getting a jebo brand ballast.. just a ballast that operates that wattage and type of bulb.. I am assuming that its a 18 watt CF
bulb but would double check before ordering a ballast for the unit personaly..
I hope this helps..