‘Arcade sync stabilizer’ by Martin Jones

Sync troubles, i.e. rolling/flickering picture,curved sides, etc.., on your beloved arcade PCBs?

Now the “sync stabilizer”, copyright by ‘MARTINJONESTECHNOLOGY’, beats ’em all !

Today I assembled on a stripboard this little circuit and installed it in my supergun.It really fixed all my sync issues with my troublesome boards (mostly bootlegs) which I never been able to solve in other way (trying, for example, the LM1881 sync stripper/cleaner)

Circuit is simple to do (but very effective),it requires only few common components.Technically speaking, it doesn’t modify the sync signal frequency but only the horizontal pulses lenght bringing them back in the broadcast standards.

For bill of materials and other technical explanations, I refer you to the official page of the creator:

https://martin-jones.com/2014/09/16/that-syncing-feeling-classic-arcade-games-that-wont-stay-still/

I highly recommend you to give it a try, you won’t be disappointed.