DeWalt Flourescent light trouble shooting.

[Joe Bob]

Is anyone familiar with the type work light in the picture? It has low use and has taken to turning itself off after about 40 seconds. Recycling the switch turns it back on again but will soon go out again.

Bulb or the unit? DeWalt customer service and the service center are of no use. Out of warranty and the bulbs are non returnable....$20 for the bulb, $45 for the unit.....