Author Topic: Gameking LCD lines on screen (Read 2842 times)

Podfun · « **on:** April 08, 2019, 05:04:04 PM »

Hi I was wondering if anybody could give me some insight I took out the monitor which is an LCD for my game king when I took it out it was working no problems put it back in the Machine that it came from and now when I power up I see little white lines going across the screen they were never there before it's been 3 days it doesn't affect you playing it I don't understand of white lines are so hypnotizing that I turn it off because I don't want it to blow up I put a different harness 19 pen still the same issue I've gone ahead and unplug the chords from the touch screen plug them back then banck in still the same

Podfun · « **Reply #1 on:** April 08, 2019, 05:08:38 PM »

Forgot to mention I even went ahead and I'm pulled the cord from the power source inside the machine replugged it and tried different outlets I even went ahead did a screen calibration with the door close same issue I pushed the button on the monitor to auto focus still not fixing it it was working just fine before I unplugged everything and I don't understand what's going on

rickhunter · « **Reply #2 on:** April 09, 2019, 10:46:19 AM »

I don't see the white lines you are referring. What do you mean you took it out of a machine and put back in the machine it came from. Was it on another machine before? Was one machine 044 and the current one 3902?

Amechanic · « **Reply #3 on:** April 09, 2019, 11:57:08 AM »

I had something similar a while back. I think it had to do with the setting between thinking it was a 044 board or a 3902 board.

Podfun · « **Reply #4 on:** April 09, 2019, 02:24:42 PM »

I'm not sure what type of board I have I had everything from this machine working without An issue I think the 1st time I installed this screen on this machine i hand the same issue but I did auto adjust and it fixed it works great for months then I bought a brand new CRT off eBay took the old monitor out unbox the CRT found out it is too big never try to put it in the machine put back the old LCD monitor that was working turn it on I'm got this I've switched out the harnesses for a different one thinking it might be a wire in the harness I've gone ahead and unplug different chords from the touchscreen and re plug them back in My mother board and other boards are mounted to the side of the machine standing up And it was working great without me having to key 22 it If I do auto I just a brings the picture to the middle of the screen but same issue no matter how many times I plug it into a different Power cord or a different wall

rickhunter · « **Reply #5 on:** April 09, 2019, 05:11:04 PM »

Post a picture of your mpu board so we may identify the board type you have.

Podfun · « **Reply #6 on:** April 09, 2019, 08:48:47 PM »

You guys are the best thanks for helping me

Podfun · « **Reply #7 on:** April 09, 2019, 08:50:46 PM »

Here's more if that helps

rickhunter · « **Reply #8 on:** April 09, 2019, 10:15:59 PM »

You have a 3802 GK. What about the monitor, need to know the manufacturer and the model number. Sometimes, there are settings that you need to switch depending on the type of cabinet you have.

Podfun · « **Reply #9 on:** April 09, 2019, 10:43:34 PM »

I'll take a picture of the monitor I'm not sure what just happened but I was taking a look at the machine and I'm gave it $5 as a test and when the reels were spinning and like glitch and showed like the rails but a new bigger size Image and didn't stay on the screen just Flash

Podfun · « **Reply #10 on:** April 09, 2019, 11:08:56 PM »

OK I change the battery about a month ago I got the battery at Walgreens I didn't have to key the machine after just switch up the battery now when I go into settings I see a bunch of numbers flashing about light pen in different messages I don't believe they were doing that before could I have token the processor bored out wrong and put it in wrong or they or do you think this is a different issue And I'm not sure how to find out which monitor I have

rickhunter · « **Reply #11 on:** April 10, 2019, 04:33:25 AM »

You have a wells gardner monitor. I think on that monitor if it is configured wrong, you don't get an image at all, it is a jumper on the AD board, so moving the monitor out and in wouldn't affect that. I'm thinking now that your issue might be power related or some sort of interference or loose connection, where does the round power plug on your monitor trace back to?

Also you cannot insert the mpu board incorrectly, it is keyed and only goes in one way. If it was not inserted all the way, the machine wouldn't work at all. As far as the number flashing, I don't have your software version to use on my machine to see if it does the same thing, but if your game plays correctly, I wouldn't worry about it.

Podfun · « **Reply #12 on:** April 10, 2019, 09:18:13 PM »

OK so I took the flat screen out today put it in my other machine to see if the problem would follow over I got a better picture but I still saw the lines now I also removed the back touch screen board and replaced it With a known working one I also put a different game board and got the same problem exception for it would require me to push the button on them motherboard after putting money and it would say Processor failure repeat the process open the doors turn the key pushed the button then it would work again this was before I changed the touch screen board that's on the back of the motherboard Checked all the wiring can't figure it out I remove the power unit on the side of the machine re slid it back into place make sure the prongs were plug then tried a known working harness still the same issue I don't think it's because I have brightness up to much I've changed all different settings don't know what it could be tried a different power plug cord for the current unit still the same issue

Podfun · « **Reply #13 on:** April 10, 2019, 09:22:05 PM »

If you look at the Gray bar where you would be betting you'll see what looks like black lines are greyer than Gray lines in person they keep going down some go sideways if you zoom in on that picture I had to resize it in order to upload it should be about the see a better version of it

Podfun · « **Reply #14 on:** April 10, 2019, 09:47:38 PM »

<a href="http://youtu.be/B4QiXo4wjL0" target="_blank" class="aeva_link bbc_link new_win">http://youtu.be/B4QiXo4wjL0</a>

Video of the screen doing the issue to see if this helps. You guys recognize what the cause could be. I already went ahead and changed out with a touch screen motherboard for a known working one. I can't find a loose wired - made sure everything was plugged, then tried different power cords, different outlets. I never had this issue until taking out the screen once and putting it back into place. I've tried new harnesses.

rickhunter · « **Reply #15 on:** April 11, 2019, 08:48:59 AM »

I am at a loss, looks like some sort of interference from something. I don't know what to try at this point beyond trying the monitor on another cabinet to see if it does the same thing.

Amechanic · « **Reply #16 on:** April 11, 2019, 09:35:11 AM »

Could it have something to do with the cabinets power supply??

wizeone · « **Reply #17 on:** April 11, 2019, 01:46:03 PM »

since the lines followed the monitor to another machine, i am thinking either the monitor power supply or maybe florescent lights?

Podfun · « **Reply #18 on:** April 11, 2019, 02:33:43 PM »

Oh my gosh the fluorescent lights - I forgot all about on the side of the top of the machine. It keeps flashing on and off, or it stays off.
It has like a spark plug or something, or an fuse. Sometimes it will stay on for less than a minute, but most the time its off or flashing.
I'm having that issue with the monitor in the machine. If you remove the fuse and turn on the machine the light doesn't work But I did see some of the lines. I try to on a different machine and the power source feels a little bit loose, but I snapped it into place one power source is H and in the other one is a B on it.
Should I try the power source from the good machine? It's like a big silver box with the plug. If I try the one from the other machine it won't slide into place, but I could set it up words and run the cable to it. When the machine was working just fine, the light on the side would turn on and off sometimes. If I had an old power source that went to that connection, (that was for an old laptop) could I try it, or would that blow up the monitor?

Podfun · « **Reply #19 on:** April 12, 2019, 07:10:04 PM »

So today I think I may have found my answer. After switching all these parts trying everything, and it following over to the next machine.
I had the door open, machine on. I moved that little plug that connects to the actual monitor - that would be like if you're plugged it in your laptop that circle the little plug that gets the power to the monitor.
The monitor went off - I moved the wire and the monitor came back on. I'm don't know if the wire is pinched, and I don't know if I can cut the power cord to the monitor, and repair it or if the actual plug inside of the monitor is pushed back. Maybe it's touching something else or the casing? It fits as if it's snug but if you go to bump the wire the monitor goes off. I've lower the brightness, turned off the sharpness, turned off the like colors, and set the colors to very low, but you can still see it.
I'm thinking it might be the connector on the actual board inside the monitor. Do you know if you can take those to a computer repair shop or computer shop and have them replaced? I cannot solder.

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Author Topic: Gameking LCD lines on screen (Read 2842 times)