Dendy (NOAC) with Jailbar

[AN7805]

Hi,

How to remove this Jailbars from my compatible Famicom? Is possible?
Any suggestion, to remove this noisy RF Bars from the Video composite?
I have try to shield, the NOAC but with any good result.



Thanks at all.

7805

[FARID]

That floating capacitor seems a little troublesome, doesn't it make a shortcircuit?

[Memblers]

Possibly, but maybe tricky. Looking at video fixes for the Famicom (when I added the A/V out to mine), seems like it was mostly caused by the video out trace from the PPU being too close to other traces and picking up noise. You could try cutting the video trace in 2 places, then bypass it with a wire. If there's some kind of amplifier, you could remake it yourself and go all the way with it wired directly to the video out connector. I can't guarantee that would improve it, but that's the idea that comes to mind.

A simpler thing to try might be just adding something like a 1uF ~ 10uF capacitor connected as close as possible to the power and ground pins of the NOAC. I guess that would only help if had some crappy, failed, or no capacitor on there.

[AN7805]

Thanks,

the strange thing, when try to move the cartridge,
the jailbars, go to attenuated and appear it.

It's really strange.

How to start cut the video trace?
to the NOAC?

Thanks,

7805

[AN7805]

That floating capacitor seems a little troublesome, doesn't it make a shortcircuit?

Surely, but i have moved, when i have disassembled.

7805