perrson
New member
19" Samsung LCD + GBS-8200 cga to vga converter Problems
Hi everyone,
I'm currently testing a red alert (1981) arcade pcb. It mostly seems to be working except for a sync issue I'm having.
The pcb has both a vertical and horizontal sync and for testing purposes I am using a gbs-8200 cga to vga converter, I do not have anything else to use at the moment.
Currently I have the the vertical and horizontal syncs wired together on the gbs-8200 since the cga input on the gbs-8200 only has composite sync. I posted a video
on youtube showing what I get, link below:
https://www.youtube.com/watch?v=R-8LRz_r27c
As you can see there is a good amount of horizontal scrolling and jitter with static between the images, occasionally there is no signal to the gbs-8200 as well as seen in the video. At first I tried the RGBHV harness and it showed the result from the youtube video occasionally but also had a lot of moments where there was no signal. The youtube video is when I combined both the H and V sync wires together and used the 5 pin connector on the gbs unit which seems better for some reason but not playable.
Right now I am trying to find out if this is the gbs-8200 fault or if its something to do with this pcb. Has anyone had this type of scrolling/jitter from a gbs before?
Any help or ideas would be great. Thanks!
Hi everyone,
I'm currently testing a red alert (1981) arcade pcb. It mostly seems to be working except for a sync issue I'm having.
The pcb has both a vertical and horizontal sync and for testing purposes I am using a gbs-8200 cga to vga converter, I do not have anything else to use at the moment.
Currently I have the the vertical and horizontal syncs wired together on the gbs-8200 since the cga input on the gbs-8200 only has composite sync. I posted a video
on youtube showing what I get, link below:
https://www.youtube.com/watch?v=R-8LRz_r27c
As you can see there is a good amount of horizontal scrolling and jitter with static between the images, occasionally there is no signal to the gbs-8200 as well as seen in the video. At first I tried the RGBHV harness and it showed the result from the youtube video occasionally but also had a lot of moments where there was no signal. The youtube video is when I combined both the H and V sync wires together and used the 5 pin connector on the gbs unit which seems better for some reason but not playable.
Right now I am trying to find out if this is the gbs-8200 fault or if its something to do with this pcb. Has anyone had this type of scrolling/jitter from a gbs before?
Any help or ideas would be great. Thanks!
