Repair Tool CCFL Lamp Tester LCD TV Monitor Laptop Screen Repair Backlight Lamp Test Support 3''-55'' With fast off key.Easy to test ccfl lamps Support to 3''-55'' inch CCFL lamps Convenient to carry, compact and precise. Wonderful design for testing all types ccfl lamps in monitor ,TV ,Laptop Ideal for checking circuits, fuses, switches and wiring on automobiles, trailers, boats, motorcycles and other low voltage systems.