New Life Games LLC
**Video Poker, Keno, Slots, 21** Gaming machines => Bally Maverick => Topic started by: tommyboy1951 on June 15, 2016, 05:34:48 PM
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How do you replace the battery on the mother board in a Ballys Deuces Wild or I was told it is a Bally Montana made in 1992. The model number is : VPOKB3-LT . I was told that the battery is located in the stack up of chips on the left side of the board. How do you get inside the chip to get the battery out and replace with a new one. Is there any thing available on the market to replace it with. After the battery has been replaced, what else has to be done to get the machine running again. I actually have 2 of these the same. The games both power up and it shows 5 cards on the screen, but that is it. Each machine shows various errors. It won't accept coins. Maybe replacing the battery might take care of most of the problem. Any ideas?
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Post some photos of the board with where you think the battery is located. You said it was the motherboard, but what about the mpu (main logic) board, that is often where a battery is located. Anyway, photos are always helpful on a problem like this and will get your best chance at getting help.
I'm not familiar with this model of machine, don't know if a bad battery will cause the problems you are seeing. Did the machines you have ever work properly, then stopped at some point - or were they in this condition when you got them?
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Here is a pic of the board. I talked to Larry Webber in Las Vegas and he is familiar with this game. He said it is actually called a Bally Maverick. He said the battery is located in a stack up of chips. He has new ones and I ordered a couple of them along with a clear chip to install after the battery is replaced. I probably won't receive them until early next week. These 2 machines are the way I bought them. The guy I bought them from said they worked at one time when he had them, but they sat for quite some time not being used. So I would think that replacing the batteries might help them out and give us some new ways to repair them. I will post the new update after I get the batteries installed. Thanks, Tom
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Sounds like you have a repair plan with it and Larry will be able to help. I was trying to figure out what you meant when you said a "stack up of chips"?? By that do you mean one of the socketed chips? There are some chips that contain a battery, they are usually installed in sockets, often called a "Dallas" chip after the name of the company that makes one variety of them. The battery is fabricated inside the chip when it is made, you can't replace the battery itself, have to replace the entire chip. Anyway, I think you are right about the battery likely needing to be replaced and hopefully will take care of things.
Also, this board in your photo is generally called an mpu or the main logic board. A motherboard is a different sort of animal in slot machines, it is the less complex interconnect board that other circuit boards connect to. Not all slot machine have a motherboard. [on computers the term "motherboard" does mean the main logic board, this is where the confusion comes from]
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Yes , you are right. It is a Dallas chip and I assume that I will be receiving the entire chip that holds the battery. I took off the top chip and underneath was the chip marked Dallas. Larry will walk me through the installation and hopefullyI will get it right. I will keep you posted. Thanks, Tom
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Ya, they are Dallas NovRAM chips with the battery built inside. They can sit on the shelf for years with no battery degradation but the battery connects when power is first applied.
I know, I used to design with those and gave Larry my last 10 when we ran out. We have 4 left, you are getting two. That leaves two left in stock.
Some day I am hoping to get a Maverick into the shop so I can design a work around and eliminate the necessity for the obsolete NovRAM.
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I looked over his photo of the cpu/mpu board, where is the Dallas chip located on the board?
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Lower left of photo. Along the edge, counting from bottom left corner Count 7 blurred rectangles up to a black rectangle, that is the NovRAM.
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Lower left of photo. Along the edge, counting from bottom left corner Count 7 blurred rectangles up to a black rectangle, that is the NovRAM.
Would that be my index location #7 on the photo below?
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no 6
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Thanks, I haven't seen one in a while, wanted to take a look. Hopefully there is a static ram chip with similar pinout that can install in the socket, then run external battery power to the power pin. But sometimes it isn't that easy.
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Good evening, I had my battery chip replaced and now my screen is completely readable except I keep getting a "24 Volt" error message at the bottom of the screen and a "RAM Error" as well. Thoughts?
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You bought another NVRAM module?
Ebay? China? You know all of the batteries in those are depleted.
Did you try the following (see attached)?
My shop does the attached mod AND includes a CMOS clear chip and the game comes up.
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Alan, is this you? Badbaud?
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Alan, I sent you an email. I just got my board back the other day. See the email for the issues. Thanks Alan.
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Email replied to, suggested clear chip be ran.
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Badbaud, please check your email when you have a chance. Thank you.
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I haven't even turned on my Dakota Superstar video poker in about 7-8 years now....last time I used it, I replaced the Novram battery chip.
I'm going to guess it's dead by now.
I might need to utilize your battery mod.
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I posted the fix in the Maverick section or you can send me the box and I will do it for $$$.
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For those of you out there with a Bally Maverick, I have had mine for maybe ten years. The battery chip went dead and I was told by everyone I had an attractive boat anchor. I found Alan through this website and sent him the board from the game to rig with his battery solution he has posted on this thread. I got the board back, plugged it and it works perfect, like new. Alan took the time to walk me through the steps to utilize the CLEAR Chip and then to put the game chip back in. I am not a technician, far from it, but this was easy! Thanks Alan. I would highly recommend him for your Bally Maverick battery chip issues. He is the best.