Famicom (AV modded) vertical line problem

Anyone able to help me out with some advice on this?
I bought an AV-modded Famicom for £30 from someone on a different forum and it's got vertical lines through the image.
I hear that this is really common for AV modded Famicoms to have this problem.

Anyone know of any solutions or know anyone who could fix it for me?

http://flic.kr/p/dQFRD9

 

Not see that on any ive done.

Any chance you fancy taking pics of the internals?

 

http://flic.kr/p/dQWA6f

Here's a photo of the inside. Seems a bit basic looking to me..
Thoughts? (Thanks for replying btw)

 

It doesn't seem to me that this mod was done correctly... duct tape? who was the seller?

btw, here are the instructions of a correct and jailbar-free tested mod: http://jpx72.detailne.sk/modd_files/fc/avmod.htm

 

Looks like its probably right, but the wires are all over the bottom of the board - probably picking up interference.

You will likely need to redo the mod to get a picture improvement

 

Thanks for the replies guys.
I bought it on a private gaming (but not modding) forum for £30 delivered.

I have *zero* experience with modding consoles (developer not modder!) - is this going to be difficult for me to do? Difficult to achieve a good clean image?

 

Well you pretty much have to follow the instructions I posted in order to have a good jailbar-free mod... if you don't have any soldering experience then it's not that easy...

 

jpx72/80sFREAK's circuit doesn't look right. I'm not sure where the R & C values come from but at the very least the capacitor should be 220 uF. 33 uF will attenuate/filter out low frequency components such as the jailbars, but it also attenuates sync which won't be acceptable on some (most?) TVs.

I would use Nintendo's composite out circuit...



You can exchange the 300 R for 330 and 110 R for 100.

Edit: also for sound there's *no way* you need a 220 uF C. 33 uF would have been appropriate here so maybe he has the audio and video caps exchanged.

 

I tried 80sFREAK's circuit once and it had major sync issues on every TV I tried it on. Every time there was a white flash on the screen it would roll until the flash stopped. Needless to say I went straight back to using the tried-and-true AV Fami circuit.

 

I have a famicom modded by 80sFreak himself, don't have any problems with it... tried it on several crt (1xPhilips, 2xSony and 1xnoname hotel set) and lcd models (2xLG , 1xSamsung and 1xUnited) and only my LG37" has some weird bug with the megaman4 intro in the beginning of it - no flashes occur , here is the video (the game runs perfect after that and it doesn't do that again even on the stage selection screen with the lsd fx) :




I have concluded that there is some bug on the tv's composite input since it does the same thing in other devices that are composite... I have never actually used it before so I did not knew about that.

I also don't have any jailbars with it, even on solid blue backgrounds... and there is no audio cap on the famicom that I have. In fact I was so impressed that I recommended him to a friend, he also got a famicom and never had any issues (just checked with him) ... for us it works fine it seems.