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 bars
Material: Aluminum
the price for Kit/4pcs
LED Qty: 54 LEDs per strip
Size (Length): 337 mm
Below models all compatible:
RSAG7.820.5328
RSAG7.820.5329
HE550HFD-B31
SSY-1125186-A
For LED55K600X3D LED55XT780G3D  LED55K610X3D  LED55K360X3D  LED55EC630JD