New Life Games LLC
**Video Poker, Keno, Slots, 21** Gaming machines => CEI and Cal Omega Video Poker Games => Topic started by: Motivasian on April 06, 2016, 05:06:49 AM
-
I have the male/female poker game "pixel' it will not keep the settings and points when the power is removed. I tried changing the battery but still nothing. Am I missing a wiring
-
Can you post a photo of your machine circuit board where the battery is? Did you position the new battery correctly, positive end to the positive connection?
-
Yes I'm sure I put the battery in correctly because I have other boards.
-
Ok
-
just some ideas,,,
Was this board working ok at one time and all you did was change the battery because it died? Or is the board new to you and it was like this when you got it? If it was this way when you got it then I'd say the next thing to try might be changing the memory chip (or the memory board if it is the piggy-back board in the photo). You can try a known working memory chip (or memory board) from one of your other boards.
Also, are there any jumpers or dipswitches that have something to do with sending the battery voltage to the memory chip? Maybe someone changed a jumper or dipswitch? Lastly, is there a diode connected in line with the battery voltage, if so it may be bad. If you have a meter, with the board out of the machine you can measure the battery voltage on the memory chip battery power pin to see if it is getting there.
-
Wow yes great idea!!! You didn't I think of that....thanks immature try it now.
-
OK wait...which one is the memory ....not sure
-
Since I'm at it....do u have any idea y my other board button not working
-
Ok
-
Wow yes great idea!!! You didn't I think of that....thanks immature try it now.
I'm unable to understand what you are saying here.
OK wait...which one is the memory ....not sure
I can't tell from your photos, they are taken from an angle and kinda dark and fuzzy, I can't see the chips very well. You need to post photos with the camera directly facing the board and have more light so we can see it best.
I think the memory chip is on the piggy-back board, or it may be a socketed chip located near the battery, look for one that says "5101" or "611X" or similar.
What is the Cal Omega/CEI part number for the board? Should be written on the board somewhere.
-
Since I'm at it....do u have any idea y my other board button not working
What "button" do you mean?
-
Sorry and thanks for the help. I swappreciate the RAM chip but still no memory. The buttons I am referring to is the bounce, double, play, take, etc.
-
Ok
-
Those photos are better but I still can't read the markings on the chips. I think that is due to the camera shaking when you take the photo, that can cause fuzziness in the photo, details won't be as sharp. I have circled what I think could be the ram memory chips in your photos below, if you can read the numbers on the top of the chips, see if they say "6116". If not tell me what they do say. Once you know where the memory chip is you can measure the battery voltage to see if it is getting there.
Your 2 mpu boards are a little different from each other as far as the piggy-back boards. You said you swapped the ram, did you mean you swapped the piggy-back boards around?
On the button problem, do you mean they are not lighting up, or that they don't work when you press them?
-
Yeah the chip has the 6116 on it and I did swap it with another 1 but still no memory. I believe that it has sone thing to do with the piggyback
-
You can use a meter to see if the battery voltage is getting to the 6116 cmos ram chip. The chip has 24 pins/legs, they are numbered 1-12 down one side and 13-24 on the other side, see example photo below. With the board out of the machine measure the voltage on pin 24 to see if the battery voltage is getting to it. You should check the battery first, with the battery installed in the board, to make sure it is good. Place the meter leads on the two board pads where the battery leads are attached to make sure the battery voltage is there. Look for a broken circuit trace/path that connects to these pads, the traces may be on either side of the circuit board. They can get broken when an old battery is removed.
Then leave the meter's black lead connected to the negative end of the battery and check pin 24 on the 6116 cmos ram chip for voltage.
If the voltage isn't there then you can start looking for where the battery voltage path is broken. Possible places would be the connector on the piggy-back board, a bad diode inline with the battery voltage, etc. Look for broken solder joints on the piggy-back connectors and pins. If you see something you are not sure about just post a photo and we'll take a look.
I don't have a schematic drawing of your piggy-back boards, can you post a photo of each piggy-back board, showing top of board and backside? That will help, thanks!
-
Sorry and thanks for the help. I swappreciate the RAM chip but still no memory. The buttons I am referring to is the bounce, double, play, take, etc.
On the mpu board with the button problem, does the machine play at all, or are all of the buttons dead? Need a photo of the entire machine, from the front, with power on, with this board installed, and a good explanation of what isn't working and what is working.
What is the history on your machine, is it new to you and broken when you got it, or was it working at one time then this failure happened? The more relevant info you can provide the easier it is to come up with repair suggestions.
-
All the info that u gave me has been a lot of help THANKS ALOT...I got one of my boards to work perfectly. But the other one still has the memory problem. It's not getting power to the memory and I don't think there is a path that will give it power.
-
Ok
-
All these boards are new to me. They were giving to me in a non working condition and I slowly got them to work thanks to all your help
-
All the info that u gave me has been a lot of help THANKS ALOT...I got one of my boards to work perfectly. But the other one still has the memory problem. It's not getting power to the memory and I don't think there is a path that will give it power.
That is good to hear that you got one of them fixed, which piggy-back board did you get to working and what did you find was the problem? This way others that may have a similar problem will be helped.
On the memory that isn't working, are you saying it does not look like there is a path for the battery voltage to get to the memory chip? How would it have ever worked? Is there a way to mount a connection from the battery (or another battery) to the memory board so the 6116 gets battery voltage?
Some questions to help:
Do you have 1 machine and 2 mpu boards, or 2 machines? Are the 2 mpu boards the same except for the piggy-back boards? Tell me about the problems you had to fix up to this point. Thanks!
-
In your photo of the smaller memory board it looks like there are 2 jumpers on the board just above the 6116 memory chip. One of them appears to be connected to pin 24, the power pin. Is this jumper labeled, does it allow for a selection to battery voltage? The board has some extra solder pads for a larger socket where the 6116 socket is now, probably a provision for a different memory chip that has more legs/pins. That may be what these 2 jumpers are for. Does the writing on the board near the jumpers indicate what their purpose is?
-
I was looking back at your earlier photos and got an idea, see if this makes any sense.
In the photo of the mpu board with the smaller piggy-back board, the eprom on that piggy-back board is labelled "PIXEL" and the other game software sockets on the board are empty. And U83 is missing. Or what I think is U83, I can't see the chip designator on the board in your photo so I don't know if it is called U83 (see photo below). What is your mpu board part number? I may be using the wrong schematic for a different mpu than what you have, if so, the following may not apply:
On some CalOmega mpu boards U83 is the cmos memory control logic chip. I think someone converted this mpu board to run the Pixel game on the smaller piggy-back board and they didn't want to save anything in cmos memory, so they removed U83 (or whatever that chip is called that is missing). They installed a socket in place of the missing chip, in case they ever wanted to go back to a different game that needed the cmos memory to work. But it looks like, for the Pixel game, the cmos memory feature is not implemented. The 6116 does get normal 5v power on the piggy-back board when the machine is turned on, so it can work as scratchpad ram for the 6502 processor. But it doesn't save any data when power is switched off.
I don't know what the Pixel game is, when you play the game is it important to be able to save high scores? Maybe it doesn't do that, starts fresh each time machine is powered up. The CalOmega machines were made for casino use, they required cmos memory to save certain financial data required by casinos. But if the Pixel game was for non-casino use maybe they didn't want the cmos memory to keep any info when the machine was switched off. That could be why you aren't finding battery power getting to the 6116 memory on the smaller piggy-back board, they decided it isn't needed for the Pixel game.
The other piggy-back board you have is larger, does it save the Pixel game scores when power is turned off? If so it is made differently and does bring the battery voltage to the 6116 cmos ram chip.
This is just an idea, let me know your thinking about this. And could you post a photo of the Pixel machine, I've not seen one before? Thanks!
-
I found the problem. It was? The memory after all. It was the wrong type of memory.
-
It was a different part number ic, someone had installed the wrong one?