Many arcade games have non-standard synchronization signals. Have you tried SNK-MVS and encountered the same issue? I've found it to be very stable on most PVM CRTs, so BVM might be more sensitive to synchronization signals.
Jamma Switcher Kit
Jamma Switcher (JAS-6F):
This is a control motherboard and a necessary component.
It can connect to the arcade standard jamma to control the power supply, audio and video signals and control signal switching of 6-channel jamma pcb games.
It has -5V mode selection...
JAMMA CONTROL-BOX PRO /JCBOX PRO Function Introduction:
—— Front ——
— Standard adjustment card function
1. Mono/stereo switch: Choose according to the actual situation of the arcade board. Most arcade game boards are mono, and the large base of snk mvs can support stereo (switch). Default...
Product options:
— JJCBOX PRO (DB15/SNK Control) + power cord
SUPERGUN master control box, equipped with adjustment card, DB15/SNK control card and multi-video output card, and also includes an AC power cord.
— JAMMA extension cable
The JAMMA extension cable allows more free...