The "Have a Coke" light is controlled by the carrier switch, which is normally OFF when the vending solenoid is idle ( it hasn't been set/latched yet by the coinmech ) so either the carrier switch isn't working right, or there is a problem the linkage that toggles the carrier switch. all of which are at the bottom of the stack..
John,
Thanks for your info. However, (if you will please excuse me here), I am a complete novice at this sort of thing. I can do most of the cosmetic stuff but am pretty dense when it comes to electrical things. Is there an actual "switch" that has to be activated? When you speak of the " bottom of the stack", what specifically are you talking about? I can get the light to go off by pulling a bottle out of the machine without putting any change in it. However, it seems that if I bump the machine, the light comes back on. It does not do this all the time. I suspect a connection problem someplace. Any more information will be appreciated. If you will pm me you phone number, I will give you a call at your convenience. Once again, thanks for your help.