Since you appear to have the Universal head, with an apparently malfunctioning controller (intermittent buttons), you could simply see if you can obtain a Universal VC controller and plug it in in place of the Universal Color Controller. Alternatively you can get a simple condensor head with filter drawer, or a 45S color head, or a number of heads from other manufacturers can fit, such as Chromega or Ilford...just something that mounts on the Beseler 45. Beseler even offers the new LED Dichro 45SL Colorhead.