Can anyone improve the rgb output on my duo?

[incrediblehark]

I'm wondering if the difference is that in the Duo the rgb is tapped directly from the HuC6260 as opposed to from the expansion port on the PC Engine.

[thesteve]

that could make a huge difference

[ogre]

Do both systems have the 75 ohm resistor on output? Some modders may leave this out assuming you will put this in the scart/output cable.

[incrediblehark]

So I'm willing to accept that its the cause of tapping the HuC6260. I don't think there are any other points to get rgb from on the duo systems so I'm going to call it good. It still is a fantastic picture and hardly noticeable, I'm just very nit-picky I guess. Unless I try a sync separator as grahf mentioned (not sure how to build one) I'll stick with the PC Engine.

[thesteve]

without the resistor the pic will be too bright (if the chip needed one) but should not cause jailbars.

[thesteve]

solved


to solve jail-bar issue on rgb modded system replace capacitor C961 10uf with 100uf tant or 220uf aluminum.
the cap is from hu6260 pin43 to ground.
C142 on the TG16

[incrediblehark]

Wow! Thanks thesteve! I'll give it a shot later today, I didn't think this would ever really get resolved. I'll swap out that cap and post the results (hopefully) later.

[Shrapnoid]

I have a question that's sort of similar to this and what I'm about to suggest may sound extraordinarily dumb but, I don't have enough experience with electronics to calculate the outcome so, I usually just experiment with stuff and see wait to see what happens which I know is also dumb and unsafe but, I sometimes lack the patience to buckle down and study so, I'd like to know from someone who has an intimate knowledge of video connections/mods to tell me if they think that this idea might work. I'll just post a pic so, you can see what I'm getting at.

[thesteve]

simple answer........no (what was the point?)

[Shrapnoid]

simple answer........no (what was the point?)

Shoot! I sort of expected that. So, it wouldn't split the composite video into the three types of video needed to produce component video?

[thesteve]

nope

[BlueBMW]

If only it were that simple....   would save a lot of trouble

[Shrapnoid]

So, mmm... What *would* happen? Would it wreck something if I tried it anyway?

[thesteve]

wouldnt hurt a thing

[Shrapnoid]

wouldnt hurt a thing

Yeah? Well, that's great because I just loooooove to experiment!