Alright.
Maybe it was asked before but I didn't find anything about it.
The question is simple:
When buying used NJB3, what should I check about the player to make sure it's working properly.
I'm kinda afraid to buy used equipment but since it's now the only way to get NJB3 and I'm intending to buy one,
then I'd like to know how to make sure the player doesn't have any hidden deffects, and that the seller is not tricking me.