You are buying the essential components needed to repair one backlight inverter HIU-813-M or HIU-813-S.
You rarely need to repair both of those, so one set should be sufficient.
The components are the inverter driver IC BD9897FS and the 4 FET transistors FDD8447L.
We strongly recommend that you replace all four transistors, even if some of the original ones test OK.
Applying this kit requires medium to advanced soldering level skills!
We also want to point out that sometimes there are other components on the board that need to be replaced.
All parts are brand new and we use it in our own TV repair center.
We - Coppell TV Repair - specialize in LCD and plasma TV repairs and we have fixed hundreds if not thousands of such boards - locally and through Internet.
Please note we can and will try to support your efforts within some reasonable margins, but we can not troubleshoot your board remotely nor can we spend the time to teach customers on individual basis.
If that does not sound right to you or if you doubt the quality of our product, services and advices please do not purchase from us!