Having Problems with vision machine

[triplediamond]

Hi All,
My boss has a S2000 Vision Upright,I am familiar with my S+ and green when it comes to the Vision,so here it goes.....Power machine up Call Attendant on Screen, coin jam and door M open in display...It seems that the bottom half of the machine is dead ,as in no buttons no lights etc ,game spins when first turned on and BV cycles,i can get menu options on the screen but the  buttons are dead not letting me scroll through the options, any ideas on where to start looking to troubleshoot ?
Any help would be appreciated
Eric 

[stayouttadabunker]

Could be a number of things but I'd start with checking the fuses 1st.
Make sure the door and cabinet I/O card connectors is plugged in fully.
Is the coin comparitor chutes clear? No paper in the chutes?

[cowboygames]

sounds a lot like a door IO card problem or door harness. If your machine uses a 1270 enhanced mpu, you might look at the green 3 cell battery also.

[triplediamond]

I have checked fuses ,coin chute is clear,The IO card you are taking about ..would that just be the door optics seems like the door latch is a bit loose when you close it..what about the buttons why would they be totally dead?
Eric

[cowboygames]

There's 2 small boards socketed on the door. They're about 5" sq with a handle for pulling them out. What MPU does your machine use?

[triplediamond]

I don't know offhand what board is in it (I told you guys Im green when it comes to S2ooo's ,plus its not my machine) anyway i can check on that tomorrow,if it helps the battery is a flat one not green as spoke of before, also the 2 boards ..would these be to the right of the Coin Comp and they are mounted back to back
THANKS

[morning_glory21]

yes those are the I/O's.  make sure power is off when reseating them, if you have another machine handy you could swap them one at a time

[cowboygames]

there are 2 batteries on an S2000 MPU. One is the coin type battery and the other is a larger NMh battery. Depending on what MPU is in the machine, the green battery can cause these types of problems when it goes bad. Be careful when swapping IO boards from another machine. Single line button decks, like on a standard 3 reel machine use a 7801 IO board while 2 row button decks, like on a vision machine, use the 7802 IO boards. All these numbers can be found on the boards themselves and are found in the last 4 digits of the board model number. If you're not sure, post CLEAR pictures

[triplediamond]

I found out that he took out the small IO board that is mounted to the mother board tray ,and yes it was on when he did this (why i do not know) what would this do to the system ? or am I back to square one with the batteries maybe,I will go over there today and get numbers and pictures
Thanks for all your help
Eric

[stayouttadabunker]

I found out that he took out the small IO board that is mounted to the mother board tray ,
and yes it was on when he did this (why i do not know) what would this do to the system ?

Bad move...the I/O board is probably toast...
Swap it out with a known good I/O board with the power off...

[triplediamond]

Thats what i told him....did it just fry that board or the other 2 boards on the door as well ? and what about the mother board ?

[StatFreak]

Not necessarily, but it's possible. At this point he needs to replace the IO board and if the machine is still down, we'll go from there.

[triplediamond]

Thanks Stat,
Another question,he stated that the monitor started going on and off (that is what started this mess)what would origionally cause this,I also noticed that the credit window was blank,no display... would this be due to dead battery's in the MPU board ? if so i was going to get some with the IO board