New Life Games LLC
**Reel Slots** Gaming Machines => Other Reel Games => Topic started by: nowl on November 22, 2017, 08:55:31 PM
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my 1st machine so i might be a little green, please bare with me. i would like to change pay-out percentage on Sigma SG-50B. Motherboard has no dip-switches. i know that other machines can be flashed with a chip. can anyone help me with this. any information will be greatly appreciated. i have added a few pics..thanks
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Can you post a photo of your main circuit board (called the "mpu" board in the slot machine world).
Look closely at the mpu board to see if it has a place for some jumpers, if so the info below might apply. This would be a place on the board for 3 soldered-in jumper wires. According to the chart below the 2 highest payback percentage settings are with no jumpers installed (97%) and with all 3 jumpers installed (98%). But I'm not sure what models of Sigma SG-50() this applies to, could be different from your machine. As far as I know, the "B" in "SG-50B" means the machine came with a bill acceptor when it was made at the factory.
(click image to enlarge)
(https://s33.postimg.org/xk7eyrpdr/Sigma_payout_percentage.jpg)
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at the location where the DIP switches should be is where the jumpers are located. however, to deter techs from changing the % they installed the jumpers on the opposite side of the board. follow the chart and make the necessary changes, you might notice a change, but it will take some time, its not an instant change. you have to remove the board from the macine and then remove the board from the metal tray to expose the jumpers.
hope this helps
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Hi, sorry to add to an old post. i have the exact same question and model SG-50. I would like to maximize the payout percentage. I have had the board out of the machine, but for the life of me have no idea which jumpers to adjust. I do see a bank of soldered connections which I assume are the jumpers. I was hoping the photo that was on this thread at one time had that answer? It does not seem to be available any more.
any help very much appreciated.
thanks.. Ron.