NES Toploader AV Mod (PAL Console) - Video??

Fellas,

Hope someone here has the knowledge, I've searched all over the Googles and can't figure out the video side of the AV mod. The wiki images for one guide are incredibly difficult to figure out and the wiring diagram doesn't work for me, maybe because it was for an NTSC console?

This is a PAL board. I've previously used Helder's mod kit from these forums for my personal one but this second console I've gone with standard yellow/white/red so can't figure it out.

Audio works, video does not. One I followed is: https://console5.com/wiki/Nintendo_NES-101





The pin looks correct to me (same one I've used before). So I think there is something wrong in the other bits and pieces and their order? Maybe one that's not needed because it's PAL not NTSC?

Any guidance would be greatly appreciated.


Kind regards,
Paul

 

The pal toploaders really don't need a amp,just take composite from the rf video pin on the bottom of the motherboard and if you did lift pin 21 solder it back.

 

Will give that a shot, thanks! Wasn't sure as on the kit initially provided by helder it had additional elements so thought the guide replicated it somewhat similar.

Hopefully straight to it will work.

Didn't lift pin 21 either.

 

Ran the wire straight like you said and it worked! Was surprised, why does the NTSC one need an amp?

I have capacitors on the audio lines, don't need one on the video line? No risk of jail bars etc?

Cheers!

 

Seems to be quite washed out and jumpy this morning, must need an amp in the line?

 

The pal toploaders use the redesigned motherboards unlike most of the ntsc ones.

How bad is the picture?

 

its not great. on CRT it's barely visible, on LCD its visible but it's almost like its missing a colour, defintely seems duller. Saying that, I went direct from pin 21 so I'm going to try direct from the RF module thing now in case that fixes it.

 

alright, went from the RF video instead (underside of board near the rf module, audio on right, video on left?)

this is the result:

 

Picture looks good to me and here is a video from GameTechUS explaining the difference from a pal and ntsc.

 

Yeah picture shows up but is washed out/discoloured. I'll watch the video, but I think it needs something

 

That's composite for you. It's probably as good as it gets without RGB-modding it

 

Well... with Helder's kit on my other one it looks perfect, though that seems to build a bit of an amp into it.

Full disclosure, I have zero electrical idea so following guides is the only way I'll figure this stuff out haha

Well, I know positive and negative, what a resistor and capacitor is (thanks JayCar!) but figuring out which component should go there without a guide is me basically shrugging my shoulders and saying "she'll be right, mate" haha

 

Does it look the same using RF?

 

RF was definitely cleaner and more full of colour. I'll get a photo this weekend of it to show the difference.

 

AV


RF

Note: I have run the wire now from the RF video straight to the output, not sure if I should have done something else as it looks to have dropped the video quality on the RF, and the quality on the AV is pretty low.

Running it on another console that hasn't been touched, looks like below:

 

Any thoughts? If I add a 5v line and a capacitor/resistor line it may fix the issue?

 

If I may chime in, I just had my PAL top loader modified to output composite. When I sent the device in for modification, I requested he keep the RF box working because - well, for RF it looks beautiful. The modder tried soldering to the RF pins, as suggested by GameTech, however he also got the extremely washed out video. We found that by adding a composite video amp yielded better results. Of course, because of the revised board, we didn't need to lift pin 21 or anything like that. Here's the guy who modified my console.
https://www.youtube.com/user/vougbour1

I'm not an electrician, but I think the issue might be because we were keeping the RF box working. GameTech uploaded a video in which he performed such a mod on a PAL top loader. However, he also replaced the RF out with the multi out from a dead AV Famicom.

 

That's what I was thinking, that the video out needs an amplifier. Are you able to open yours and take a photo of the board/wiring by any chance please?

 

I don't have a Gamebit, sorry. But I'll ask my modder what he did if you like.

 

Hello i modded Jarrah pal (aus) top loader for composite. components used
1 x 120ohm resistor
1 x 330ohm resistor
1 x 220uf 10v cap
1 x 560 pf cap
1 x 3906 NPN transistor.

dont have the diagram right at this moment, just do it by memory. but similar to

here is a video of connecting composite via RF


here is the end results and agreed by jarrah, believe he is happy with how it turned out.