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Has anybody made a filter to protect monitor chassis from bad sync?

ninjaz0mbie

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I've been researching candy cabs and tri-sync monitors in particular as I plan on acquiring one myself. I've noticed several anecdotes about chassis blowing up because they are fed a bad signal, or the wrong impedance level for JAMMA vs JVS/VGA, etc. This thread, for instance.

In general arcade chassis seem to be fragile when used in ways they were not intended, and with so many people using MAME setups or sketchy JAMMA all-in-ones with their arcade monitors, there's a risk of many people destroying their increasingly expensive and difficult to replace chassis (this seems especially true for tri-sync monitors with less plentiful replacement parts).

I'm wondering, since these chassis seem to be picky and lack many of the fail-safes and tolerances that consumer CRTs have, if it would be possible to create some sort of "filter" module to add this to one's monitor, as a means of protecting it. Perhaps it could blow a fuse or switch off when attempting to pass through a 720p signal to the monitor, or when the wrong type of RGB is sent, or when the sync looks wrong... something to dummy-proof and accident-proof these monitors for future preservation.

Does anything like this exist? I know the @invzim "Tri-Sync Helper" paired with the JAMMAfier appears to do something like this with video impedance.
 
I'm planning to set up something similar to what @TerakRall describes here (link); some sort of multi-input/multi-output SCART/BNC switcher like an Extron going into my cabinet. I'd largely be playing Naomi games on my cabinet, but it would be nice to also quickly switch over to my Sega Saturn and pop in Virtua Cop or something since the 29" monitor is far more ideal for light-gun games compared to my tiny PVM.

However with a variety of signals that could come from any of my old consoles, I don't want to have to worry about accidentally killing the monitor by sending it something with a sketchy composite sync that wasn't giving me trouble elsewhere, but which the monitor's chassis couldn't handle.
 
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