| One of the lights stays on all the time | Shorted triac. Typical causes: An output shorted to the common terminal Attempt to drive too many bulbs exceeding the output capacity. Surge caused by failing bulb causing over current condition. |
| Board is dead. | Possible causes: Blown fuse. Input resistor failed due to modified voltage intput (i.e. Dimmer or Modified Sine-Wave inverter, etc...) |