XRGB 2 plus and arcade jamma/pcb problem

has any one here found a fix to get the xrgb 2 plus to work with jamma/pcb boards correctly?

there is some problem with the sync signal.
the xrgb thinks the jamma/pcbs are running at 50hz so the screen keeps rolling.
this happens with every board i have tested. my tv will even sync in on most of them by its self. how can the xrgb have a problem?
is there any simple tricks to get the xrgb to think the sync is a diff hz?
most likely it is a full up scan down scan problem.....
like it is miss matching a few +-%

ok got most pcb/jamma boards working.
the over all rolling problem was caused by a cap i left in line on the sync to get the neobitz board to work. (Durrrr on my part) had to remove it now to get the xrgb to work.
plus it seems most jamma boad sync signals are too weak.
KI2 is real bad the mvs, and most others just off a little.
i used the tubo duo amp. but just the sync part.
the rgb values are to high for every game i tried. need 65-75 ohms on each value(same as problem as the genesis). you can control the setting in the xrgb but that is a pain. its better to mod each cable as needed for each system.

there are still problems with most midway boards, mk1,2,3 nba jam ect...
but that was the case with a handful of tvs
.
my samsung dlp has no problems with the out put of those midway boards.

too bad the xrgb does not... i guess i will have to play those
in svideo.


!!! I caused a melt down on my adapter cable i made for my massystems super nova. i never seen such smoke and carnage like that in a while(poor 32x pigtail never knew what hit it..). that PS in that thing has some BALLS 15A on the 5v. now i have a one amp fuse feeding that side.

Maybe it would sync better if you used a lm1881 to filter the sync on some games. Someone posted about using a switch on the lm1881 w/ the neobitz because some games need filtering other are worse when filtered.

-DT