This is how I got mine working again; I stumbled upon this NSM Hot Fire Birds some 6 years ago.
Some lights worked but no sound no displays and no startup. It tried to fix it, checked the fuses, traced all the wires, tapped on the boards here and there but I had no clue whatsoever where to start.
I called around and send emails (to the NSM company also) and various local pinball repair shops and people in ‘the scene’ and they all started laughing without exception and told me NSM machines are pieces of crap.
One shop advised me to put it in the garden and plant flowers in it cause that’s all they were good for (I kid you not).
As it turned out later this machine had been travelling trough the pinball circuit for well over a decade, went from owner to owner and no one could or wanted to fix it. That’s why I got it for exactly $100,-
It sat in my room for a year like that until a colleague of mine visited me and suggested to bring over his oscilloscope to just check some components, he soon recognized a RAM as such, (I didn’t have a clue) and a few minutes later he thought he found the problem in the shape of the RAM being dead/empty/broken. We checked the ram’s no. and found one online for $1,79 and replaced it, a manual in pdf was also found online.
The manual stated the need of a ‘service-tastatur’ wich you connect to the machine to program it’s memory / settings, these ‘service-tastaturs’ are also used to program the companies vending machines so I found one on Ebay for $50,-, we hooked it up, followed the guidelines from the manual and after a few hiccups it started right up !
The battery had leaked but didn’t do any damage and I played it without any problems for the last 5 years, it still looks great with little to no wear on the playfield, some old school German reliability there.
Last pic is the service-box, there are 2 versions, this black one and a bigger blue one which is for vending machines of a later manufacturing date, as far as I know the black ones work for the ‘84-‘85 machines.
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