Definitive PCE/Turbo RGB solutions (with csync)? -2016-

[cr4zymanz0r]

People all across the internet have been discussing PCE/Turbo RGB for years, which has led to all kinds of variations where one mod seems to work fine for one person's equipment, but not for everyone, etc.. This makes it hard to sift through all the information now and know which methods are correct all around, and which ones aren't

Currently my only RGB modded PCE system is a PC-Engine Duo-R. It was originally a doujindance special from probably 5 years ago where one of the colors started to fail, then failed completely. As it was still years ago, I just slapped together a simple transistor amp mod similar to the one at the bottom of this link (http://www.mmmonkey.co.uk/pc-engine-rgb-mod/). I plugged it back in and it worked, so my ignorant self considered it fine. From what I've read this method has the video signals at improperly high voltages and probably other things wrong as well. I'm by no means an expert on proper analog video circuits, but I'm much better soldering and can understand the stuff in general now rather than it just seeming like the right magical mix of components gives you working RGB.

1.) So what are some proper methods for getting correctly spec'd RGB? I fully understand where to tap RGB from the system and ways to get it out of the system. What I need to know is what is in between to get the signals correctly amped/boosted/terminated/whatever. If all I need are a small number of cheap components per a signal, then I would maybe prefer that over a more expensive pre-made solution (though I am open to a good price-to-convenience ratio solution).
a.) One solution I've seen posted is this http://www.gamesx.com/grafx/pce_rgb.jpg . Looks like just a more complex version of the mmmonkey transistor amp, but I'm hoping the additional components in this one bring it to correct voltages and such. Is there anything wrong with this solution?
b.) There's this premade solution http://www.tg16pcemods.com/rgb-amp.html . It doesn't account for csync, but otherwise is everything fine about it?
c.) Any other 'proper' RGB mods?

2.) Most people seem unconcerned about tapping csync from PCE hardware since composite video based sync (CVBS) seems to work fine in most applications. Well, I recently got a professional AV switch that only works with csync and/or horizontal + vertical sync, so CVBS is out of the question for me now. I know where to tap the signal, but I don't know what needs to be done to properly amp it to the correct levels. Will the transistor method from the gamesx link above work fine? Are their reasonably priced pre-made PCE RGB solutions that account for csync as well? I'm aware I could probably use a LM1881 sync stripping solution on CVBS to get csync, but I prefer to use csync from the console if it's actually outputting it (though I would be interested in technical reasons for if a LM1881 solution is 100% as good as console native csync, if it isn't, or other caveats).

Also, whatever methods turn out to be 'correct' I'd be interested to know the technical reasons why they are correct so I can learn as well. "Well, the X resistors connected to Y bring the voltage level down to the proper Z spec" or whatever the explanation might be.

[nierro]

I came here to ask this question pretty much, but I can't seem to find an answer for it... Any luck?

Trying to do an RGB mod for TG-16. I'm using Console5's THS7374 RGB booster (only because Voultar's is sold out), Mini 9din genesis model 2 plug, a RGB SCART cable with Csync (from eBay's retro_console_accessories). 
Here are my questions,
-if I want to use Csync, should I boost the sync signal from the TG-16? If so, how should I go about doing that? will it work with the THS7374 RGB amp?
-If I want to use Csync, should I even connect the comp video output?

[Keith Courage]

Big tutorial found here. https://web.archive.org/web/20160308114731/http://www.otakus-store.net:80/fr/content/6-guide-nec-

If using the pure c-sync signal from the hu6260 chip you must add a 220uf cap or larger to the signal either from inside the system or in the scart cable itself.

Also, the jail bar fix in that tutorial is out of date and everyone uses this one now. http://etim.net.au/av-driver/pcebars/

[MobiusStripTech]

If you are using the genesis pinout, which is the whole point of a 9pin mini DIN, then you should hookup every signal just like the genesis would have. Thus both composite video and csync. The simplest way to handle the csync boost is inside the console, then you know it's there.

I personally use the genesis 2 mini din for RGB installs on non Duo's and unless someone wants the full size din. Then just source a genesis2 cable and remove any unneeded components.