New Life Games Tech Forums

I have a ballys pro series 5500 (black and white double jackpot) The bill validator makes sound when the machine comes on but no green light. the bulbs look burned out. there is a red glowing light that is on all the time. it will pull the bills in but push them right back out. with the green light not working will that stop  the bill validator from working? do i need to upgrade it to except new bills? how do i upgrade it? any help would be great.