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I have just aquired a IGT S-plus 5x machine from a friend which appears to have come from a casino.  It does not show any error codes and seems to function when you play credits.  However, it will not pay out on winnings. Neither the Win meter or the credits are being modified, and no money is being despensed.  I've removed the CMOS Chip and re-installed it but when I turn it on it begins counting up the credits. Been runing now for about 30 minutes.  Why is it doing this and what should I do to stop it, if necessary.  Is it just going through a cycle that will eventually stop?  Help.
It has now stopped counting up the win meter and instead is displaying an 07 there.  However, the internal win counter is still to count up.  Strange.  

Tournament chip?  :103-

I had the same thought CVSlots regarding it having a tournament chip, anyone know how I can ascertain that?

Turn off your machine and pull out the MPU board (silver tray with black handle, pull up, then out). Look for the chips in the Game Prom and Reel Prom sockets and tell us what the labels of each read. We are looking for numbers that start with SS (or ST) and SP. From there, we can tell you what chips your machine has and either eliminate (or confirm) the possibility of them being tournament chips.

There are two ways to determine what your game and reel chip are. The first way is to remove your MPU board (that's the silver tray that you see in the game change) and just look for the chips and their labels. The second one does not involve any removal of parts. Just press the white test button (next to the power switch) enough times so that a 4 is displayed in your coins played window.




On the Winner paid window, you will see two numbers cycle. When the number is flushed to the left of the display, this is the game type. When the number is flushed to the right, it's the first 2 digits of the Reel Prom (most of the time this number is 00, as most reel prom numbers are under 9999). On the credits window, two numbers will alternate. The first number is the game prom number (this is displayed at the same time the game type is shown on the winner paid window). The second number is the last 4 digits of your Reel chip number. In the example below, you can see [00 ] [1271] and [ 00][4784]. This means that the current game is a type 0 game using an SP1271 game chip and running a SS4784 Reel prom

Thanks Buzz and CVSlots, I'll give it a try today and let you know.  Much appreciated. 

Ok I attempted to follow your advice BUZZ but when I hit the reset button nothing happened.  I could however press the Bet button and change the Coins accepted to 4.  Once I did this I did get a  40 in the Win window and a 1000 in the Win credits display.   So I looked at the Motherboard as CVSlots suggested.  Here's a link to the photos I took of the Motherboard:

http://www.beckyshair.com/SlotMachine/5xPaySlot.aspx (http://www.beckyshair.com/SlotMachine/5xPaySlot.aspx)

It doesn't appear to have either a Game chip or a Reel Prom.  Are these Necessary? If So can I get hold of them easily? If they are not, could it be wise for me to get a Clear Chip set to clear the CMOS? Sorry for the inconvenience folks, any further advise you can give me is really appreciated..

And the machine PLAYS? With no chips?  :103- :103- :103-

Reading your first post you said the machine plays, so why would you want to waste money and put chips on the board now ????

it plays , but when a win appears, it will not show the win in the win meter or add the win to the win credits.  Also , the coin comparer is not active nor the bill changes.  So it is doing some strange stuff. 

That must be because you have a rare machine, it came from a casino.!!  Me I'm stuck with buying all my machines from a Day Care Center right down the road from me. ( those 3 year olds are tough on machines ) I'd sure like to get hold of a machine like yours, plays with no coins, no Bills and no eproms !!

You have a non-standard chip in your machine, based on your pictures.  We won't be able to diagnose why your machine is doing what it's doing until you get some standard chips in there.  There's no telling what's programmed onto that other chip.

(http://i41.tinypic.com/2rxtjkh.jpg)

(http://i43.tinypic.com/2uq0wau.jpg)

(http://i39.tinypic.com/ixrqlt.jpg)

Thanks Knagl,  any Ideas where I can get some standard chips?  More importantly, do you think if I do they will work with this motherboard?

You should be able to obtain the chips you need by creating a post in the Classifieds section (http://newlifegames.net/nlg/index.php?board=137.0).

I don't have a board handy and I don't know what chip you need in place of the homebrew chip that's in there now.  Carefully remove it and perhaps state in your post that you're looking for the chip that goes in the socket labeled "x" (whatever that socket is labeled as on your board).  Also, you'll need a "SS" or "Reel PROM" that corresponds to your 3-coin 5 Times Pay game.  You can see a list of available SS chips by clicking here (http://newlifegames.net/igtbible/IGT%203CM/Game%20Library%20-%20S-Plus%20-%20Five%20Times%20Pay%20(3%20Coin%20Multiplier).htm).  You'll also need a SP (or "Game PROM") chip that supports a Type 0 game (most do -- I'd suggest SP1271, but any SP chip that supports Type 0 games will work).

Also, if you want to enable the bill validator, you'll need a SET chip that's compatible with the SP chip you're buying.  I'd also recommend getting a CLEAR chip at the same time just to have.  You don't often need one, but it's nice to have on hand on the rare occasion you need it.

A terminology note, the board pictured above is the MPU board for your machine.  The "motherboard" is the backplane board that is fixed in the bottom of your machine.  The MPU board plugs in to the motherboard.

Thanks so much Knaql, I have found a motherboard that matches mine, and will attempte to get the chips you suggested.  Hopefully that will bring it up to par.  Still cheaper than buying a new machine.

Again, that's the MPU board, not the motherboard. The motherboard is a different board in your machine.

Also, you likely don't need a new board, just the missing chips and a factory replacement for the chip that will be missing when you remove the pictured non-standard chip on that small lime green board that's mounted in your MPU board.

My two cents it looks like one of MITCHELLE ENTERPRISES ..AKA ----- www.slotsdirect.com chips made for there slots they sell to make legal in all 50 states to not dispense any money etc --same as a demo mode on many boards or mains available today ---free play etc .. I have seen a similar set up  before on BALLY 5000 series & demo mode available on many games out there today .

I would keep that set up ....

 try again to see what it says in the set up menu as Buzz mentioned to see if there is a actual number or numbers that come up ??
being nosy i would ask where you purchased the machine from this would clear up alot of confusion ?? of course you dont have to answer that  :103- :103- :103- . but I dont think it went from casino floor to homeowner . it made a stop first -for some modifications .
unless it was on casino floor as a demo model for a raffle -slot tourn .-etc but still would think the dealer who aquired it would of installed regular SP & SS CHIPS before sale .

Rocket

just curious who told you to pull the CMOS chip out & for how long to remove it etc ????
and what would it do if you did that concerning your original problem you thought you had .