I just picked up two Balcar T1005F packs and six heads at a moving sale for less than the cost of one Paul Buff monolight. Cosmetically they are pretty nasty looking, but the seller said they worked, and that I would just need a few new lamps. The problem is that when I plug them in, they make a rapid clicking sound. Two of the heads fire, but after a few minutes both packs stop working. Some of the heads have burnt out modeling lights and flashtubes or just aren't working. I can't find any useful information on this model. Does anyone have any idea where I could get them serviced?