Can anyone help? When switched on, projector makes fairly loud crackle noise. The fan comes on but tubes don't light up & power indicator bulb at rear is red. This happend while my son was playing his Playstation on it. I had local T V repair shop take a look and they thought it was the main power board. Does anyone know where in Essex I can take it to get it repaired? Is it even worth repairing? Your views would be appreciated.