A heat lamp is being blamed for a fire in home on Janesville’s east side.  Firefighters responded to the 300 block of Jefferson Avenue a little before 9:30 a.m. Sunday.  The first to arrive found a working fire in the basement of the single family home.  The occupants had been alerted by smoke detectors and had already escaped.   Fire fighters were able to use a portable extinguisher to put-out the flames.  No injuries were reported and firefighters did reunite a cat and two-chicks with the residents.  Damage is considered minor.