Video not displaying correctly

[freakboy89]

Hi guys!
I'm new to the Famicom world as I just recently purchased a Famicom. I have AV modded it and when I hooked it up to my TV the video just wasn't showing correctly. I have no idea what could be wrong. I have tried cleaning both the cartridges and the connector itself but nothing seems to help. The only idea I can think of really is a bad connection somewhere, because sometimes I only get a blue/green/gray somthing color screen.
Please help!
(The picture is from Jajamaru.)

[P]

I also suspect bad connections. Cleaning properly can be harder then you think. There's a lot of threads about connector cleaning.

Do you have any other games to test?

[freakboy89]

I actually found the problem. I had manage to solder a cap wrong. Now it works perfectly! Thanks anyways!