Hi everyone.
I finally got round to starting an RGB mod on my PC Engine DUO, well actually I did a 5 Pin DIN to 8 Pin DIN swap a year or 2 ago - may be more (this mod has been in the works for 10 years I'm sure :oops:)
I made the RGB 8 Pin to Euro SCART yesterday,
And today wired the HU6260 to 3 RGB wires, and then wired the backside of the 8 Pin DIN Socket to 3 more RGB wires, the idea being the RGB amp goes in the middle of the 2 lots of wires.
Shielded cables used all the way - I only want to do this once, and do it right!
As soldering onto the HU chip took a while (i.e. bl***y difficult) - I left things at that.
Except I couldn't resist joining up the 2 internal sets of RGB wires that were meant to be the in / out from the yet to be made RGB amp (which will be NJM2267 based)
The picture was actually pretty good, not dark in any way, but I did notice jailbars on large areas of solid colour. I need to put a switch in my SCART so I can flip quickly from C-VIDEO and RGB to do a really good back to back comparison of colours, so I'll pass on that for now.
Now the NJM2267 RGB amp may well reduce the jailbar effect, but if there is anything else worth doing now, I'll give it a go. Like I said, I want to do this to the absolute best quality I can, even if the improvements are minimal.
From what I understand, its possible to stick a Capacitor across the power input of the HU chip, to smooth out its power feed?
I think this is what is being suggested here
http://baku.homeunix.net/RGB/PCE_DuoRX/PCE_DuoRX.html#add-passcon - any Japanese speakers please translate!
Also - someone suggested a CAP mod in this thread too.
Could anyone (preferably someone who has actually done it) let me know what CAPs I need, and between where?
Any other worthwhile tweeks, please let me know.
thanks!
