AV Famicom - wierd ghosting and vertical lines

[Hamtastic]

Hi All, new here hoping someone can give me some advice.
I recently bought a AV Famicom in Japan, and on getting it home i've got some video artifacting, i've tried switching powersupply, and both a generic set to 9v and my MK1 Megadrive PSU give the same results.
TV is clean on other video input, so I think its related to the Famicom somehow!

I'm used to soldering, so looking to repair it myself, so need some idea of where to start.

Thanks all.

[Pikkon]

Never seen this fault before.

I would change out the filter cap,should be a 1000uF at 25v.

[fredJ]

Nope, I have not seen that.
Broken trace somewhere? Faulty RAM?

[Hamtastic]

Thanks for at least taking a look.
I've picked up the caps for a recap and a spare PPU, I guess i'll see what works!
I'll post what I find out.

[Pikkon]

Awesome,hopefully you get it working.

[Hamtastic]

Finally had time to take a propper look and....
It was the TV /facepalm

I had completely forgotten the rest of my retro hardware uses RGB, so this was actually the first time i had used the composite input. Plugged it into my cheapo composite to HDMI adapter and bingo clean as it gets video.

I guess the moral of this story is, trust nothing especially things that work