Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: uolarethian on May 23, 2014, 06:30:34 pm

Title: screen jumping
Post by: uolarethian on May 23, 2014, 06:30:34 pm

I am using a wg k7000 monitor and I have a slight jump. I have tried to adjust the pots with no positive results. Any one have any suggestions?

Title: Re: screen jumping
Post by: adder on May 23, 2014, 06:41:27 pm

more information would be helpful. eg. what are you using the monitor for/what are you inputting into it. is there a way you can test to see if the jumping occurs regardless of what is being input? (this helps determine whether the problem relates to the monitor itself, or if the signal being input is your problem).

Title: Re: screen jumping
Post by: uolarethian on May 23, 2014, 09:35:57 pm

I am using it with a JAMMA harness for arcade games. I have tried two different pcb's I get the same slight jumping with both

Title: Re: screen jumping
Post by: uolarethian on June 03, 2014, 04:09:29 pm

So i have made a video of the problem. I have tested it with 2 jamma boards but now I have a vga to cga converter hooked up and it still does the same thing.  I did a cap kit on the board with no change.  Here is the link for the video.

https://www.youtube.com/watch?v=YRdl-HFpicA&list=UUtAR3_1K_8CCyxbaBft5mTw (https://www.youtube.com/watch?v=YRdl-HFpicA&list=UUtAR3_1K_8CCyxbaBft5mTw)

Title: Re: screen jumping
Post by: spoot on June 03, 2014, 04:51:59 pm

At the times it looks fine.....give it a whack......does it shake right away?

Possibly cold solder joint?

Title: Re: screen jumping
Post by: uolarethian on June 04, 2014, 12:32:09 pm

I give the frame a good rap with my knuckles and it does not jump.