|One of the lights stays on all the time||Shorted triac.
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:
Input resistor or main capacitor failed due to modified voltage intput (i.e. Dimmer or Modified Sine-Wave inverter, etc...)