Hello guys.
Earlier tonight I picked up a Super Mario machine, this is my very first Gottlieb machine in my collection so I'm not so familiar with it's system yet...however, the game worked when I tested it at the sellers house, but in order to get it up from the basement I had to disconnect the backbox - when I came home I sat up the machine in my workshop and reconnected all the cables...but it would not start up...?!?! I noticed that P6 was still free....and I cant remember if it was anything in it either...nor can I find any lose cable...
Does it suppose to be free???

Sorry for long story and short quiz gents, but I hope someone can look at their machine and let me know what I'm missing here...

Thanks
Paul

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Thanks a lot, yes that helped me a lot actually...looks like I've done it correctly
but it still wont start up...the machine had been sitting unused for 10 years before I came along....
battery??? hmmmmm....

Ok, guys...thanks a lot for your ideas
Machine was unplugged from the wall before I disconnected all the cables.
All fuses are fine...those I found, under playfield and next to the transformer at the bottom of the cab.
What happened when I turned on the machine was, backbox GI lid up, display showed just a tiny writing in the bottom left corner, saying "Ball 40" (blinking) nothing happened on the playfield...so I turned it off after a few seconds being afraid I'd fry something.
And yes, the machine made a "bzzzzz" ing sound when I turned it on...
I also had both blinking and steady LED's on the boards...i dont remember which one had what but I can figure it out soon.

When I turned the machine on yesterday at the sellers house, it took 15-20 sec before the display lit up...???!!! is that normal for Gottlieb machines?? like I said guys, i have a bunch of other pinball machines but this is my first Gottlieb...but i guess the setup is pretty much the same...

Right now the machine is totally stripped down for cleaning, you cant imagine how dirty it is...
But after that I'll tell you guys about what is blinking where, and I hope someone could be so kind to guide me like "step-by-step" of how I can work my way around with my multimeter....as I'm not so good with that stuff

Thanks again guys for your input, I'll keep you posted.

Paul

Ok gents.
Machine has now been properly cleaned, and I started it up again, and this is what happens:
All GI lid up, backbox and playfield + three boards in the backbox has a blinking LED (red squares)
the board with the black square has a solid LED

Still no inserts lights or dmd...

Any ideas???

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@ Chicoman (or others)
I've been looking at a few video clips and read some about my issue...so it sounds like you're onto something here..so it wont hurt to try
however, i did a search on Pinball Resource...but they seemed very complicated to deal with as they don't accept credit card or any on-line payments
Do you know if anybody else might have this chip in stock (AND are willing to accept paypal) ??
I live in Norway btw

Problem solved gents

It was soooo simple really, the machine had only 4.3 volts....and I turned the "wheel" up to 5.1 volts and now it plays perfectly...apart from the launch ball coil, which dosent work...and I knew that when I bought the machine...is it an easy fix too?? coil is not burned/melted...
I need a new A-19300 coil on the "back kick" as it has melted the plastic inside, so if I trigger it I might blow something on the board...so thats an easy fix.
Hope I can get some inputs about the launch ball coil.....as it's much more fun to play with the glass on

Thanks everyone for their opinions i really appreciate it.