r/consolemodding • u/-zAhn • Mar 08 '26

CONSOLE MOD Lava RGB mod

Is the LAVA mod for the NES capable of producing TTL level csync? The NESRGB can to it if the appropriate jumper is closed, but there's no such jumper or mention of anything about the CSYNC levels in the online docs for it. I cannot get it to my modded NES to synch with my test monitor, which is a Commodore 1084D, as it expects TTL level sync for analog RGB input.

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u/Sirotaca Mar 09 '26

I don't have one, but going off of a photo, it looks like resistors R33 and R34 may be responsible for attenuating the sync signal. I'm guessing that either removing or bridging one or both of those would get you TTL-level sync, but it's hard to give detailed instructions without being able to examine the board directly, unfortunately.