100% working condition.We test the led strip before shipment ,so you can buy with confidence. 
Many TV models use various different sets of LED strips. 
Please check your original led strip model in your TV before ordering.
New LED backlight bar
Material: Aluminum
Size (Length): 499mm
Number of LED beads: 7 per strip
Every LED Lamp Voltage: 3V
Package include: 1set=12pcs LED Strip

LED Light stirp model:
K490WDR A1 
4708-K49WDR-A1212K11
4708-K49WDR-A1213K11

Compatible  TV Models For
Toshiba 49l621U