The first issue will be a dead battery as they need to run off battery. Second (as I have 3, 1 backlit 2 non backlit) is the motherboard will need recapping. I know some people who will do it, but it still costs to do that. So expect at least one hundred more if you can't do the work yourself as the battery cell is around 23 dollars and the capacitors are around 20 plus shipping and labor.