Quoted from LTG:
The JJP warranty is parts not labor. ( as is other pinball manufacturers )
As the guy in the video stated...this was a brand new pin, straight out of the box. If something isn't working as it should, and it needs to be repaired in order to work, you are going to pay for the labor to fix it, unless you are going to refund the purchase price of the pin. I don't care what the warranty says.
There is a thing called Implied Warranty of Merchantability that would apply here.
That isn't to say that there can't be an attempt to have the customer do the repairs themself, but if they can't, it will need to be fixed. Including labor.
I know that Stern will cover labor under these types of circumstances. A friend who had issues with a Tron LE and the LED boards going out on day 1 had Stern send a tech over to his house to do the repair at no charge.