Because not all of the boards fail in the same way, we do not guarantee that the components in this kit is all you need to fix your board but it can take care 90% off all cases. It's your responsibility to troubleshoot and properly diagnose your board in order to complete the repair. We recommend all kits fitted by a qualified personnel. A successful repair depends on the engineers own skill and fault finding ability. DOING YOUR OWN REPAIR WORK: The removal and replacement/installation of electronic components at the circuit board level is NOT recommended if you are not experienced with electronic component and circuit board repair. If you are new to this stuff, please take our advice and leave the work to a qualified expert- you will most likely thank yourself later. It is VERY easy to cause damage to electrical parts and circuit boards if repairs are not done with precision, neatness, and accuracy. It is very easy for one to make problems WORSE than they were before, if one does not know what one is doing, or does not have adequate experience with these kinds of parts and this kind of work in general.