The house I am currently living in has two rooms with round 12 inch fluorescent light. Lately when the lights burn out I go and buy a new one and it does not want to come on or it burns out after a while. A local electrician suggested that they need a mechanism changed in it that costs around $48. The house was built in the 1950s and is a small house. This mechanism to my knowledge has never been changed since the house was built. I was wondering if the mechanism is obsolete or if it is still being manufactured?