Quoted from jkashani:
Do the original light boards inevitably fail? Is there any date build that afterward has the more reliable light boards? If you have to replace the light boards how much work is it?
Inevitably no, but they do fail, at random intervals on random games. It can be a cheap, 30$ painless fix if a small board dies, or a quick expensive, 250$ one if a big board dies. Replacing them is a 5mn job litterally.
You can score a complete set of boards for around 250$ from someone who switched to a 2.0 light kit (I sold mine 3 days ago).
Games built after December 2016 come standard with the 2.0 board.
As to replacing the complete light kit, it's around 15 hours of real work, it's easier than it looks and very satisfying once done, I would go for that option, and the added peace of mind of not worrying about your game everytime you turn it on, is probably priceless.