No i mean the backlight strips that go in the TV. I wonder if i have to use the exact same strips for my particular tv
Different LED strips draw different voltages. Typically, each LED can draw either 3V or 6V, depending on what the TV is designed to use. So using a 3V LED strip when a 6V LED strip is supposed to be used will make the image alot darker than its supposed.
Another thing to consider is the way LED strips are connected and the types are usually two : edge LED strips and row led strips. Edge LED strips line one edge of the TV (either side or bottom) while row LED strips have 4 to 6 bars of LED strips arranged in rows. The connectors to each LED strip need to fit as well (unless you intend to microsolder wires to it)...