hantarex mtc-9000 28"

[erm67]

I am not a video-games profi but I have since 2002 an arcade cabinet at home with mame and arcadeVGA. It always worked fine even if I had to tune the vertical frequence pot for each game.
A few month ago I used the mainboard from my cabinet to assemble a desktop computer, and the cabinet remained unused for some 4 months. Now I fitted a new motherboard in the cabinet, without any other change, to find that the monitor does have probably a problem. The mtc-9000 has 6 controls on a small pcb inside the cabinet, 4 of them are working, I mean the picture changes when I move them, but 2 has absolutely no effect, they are labeled on the pcb as  H. Phase and and V. shift.
I remember that previously I obtained a good picture using those controls.
The best adjustement I could obtain looks like in the pic attached.
I found a manual, a schematic and I probably can change some caps, would a cap kit solve the problem?

[dabone]

Do you have the older version of the avga? with 2 vga connectors?


IF so make sure your monitor is plugged into the lower connector.


Later,
dabone

[erm67]

Yes it is the old one and the cable is plugged  is in the lower connector, it is connected to a j-pac as you can see in the pics. By the way shouldn't the two leds on the j-pac (sync ok, sync in) lit if the frequence is correct? They doesn't, maybe is not the monitor but either the j-pac or the vga arcade are broken ...
In the next days I will try with a real jamma pcb...
There is a difference from ordering a cap kit or buying the same caps in the electronic shop around the corner?