GUIDE: AV mod your Famicom

Hi guys, my first post here.
I'm trying to mode an HVC-CPU-GPM-02 Famicom using the following tutorial:

http://jpx72.detailne.sk/modd_files/fc/avmod.htm

But I get no video output.
Here are some pictures of my mod. DO you guys see anything weird?






BTW I'm using a 9v 1200A negative centre Power Supply with an Everdrive cartridge.
The everdrive cartridge seems to work as it has a led that turns on which tells me that the console is also on.
Tried it on my projector as well and nothing. I have Famicom 3 boards, tried doing this mod in all 3 of them and nothing.
I'm thinking and thinking but can't find my error...

 

I wonder if attaching the 150ohm resistor to the 5V line is riskier than attaching the 300ohm resistor according to console5's design. On one of my Famicom, running on a original Genesis AC adapter, I noticed that after a prolonged period of time, I would get some graphical corruption. Or is that related to a well known glitch related to pre-198x Famicoms?

 

I'm not expert but that capacitor on the bottom of second picture looks like it is touching that plane via the solder point on the right? I'd throw some electrical tape or something under it just to make sure it isn't.. additionally the wire looks close in same picture angle doesn't do it justice so it might be fine but I'd insulate it as well. I am not familiar with the mod personally but it says to cut the trace from line 21.. I see one cut at bottom of image 2 don't see the other just making sure you did it. Also on closer look on image 1 the transistor is it resting on the chip or the resistor under it? those could be causing shorts. I'd check those things first

 

No, you'r not missing anything. I have just filled the empty holes because I think it looks better, nothing else.

 

It "gets better" with copper foil. Make sure to solder for example a cut off component leg (or a wire) between the copper foil and ground.

Copper foil does not remove all jailbars but it helps to reduce them. No need to remove the PPU if you'r careful when sliding the foil under the PPU.

 

Sorry for not following up on this thread but IRL gets in the way unfortunately.
I still want to make a tutorial for the newer Famicom motherboard but I have not had time.

Edit:
Regarding Jail Bars, it's a construction flaw in the hardware. Even the NES have them but less noticeably for the eye - but with an oscilloscope you can see them.
The only way for a perfect image is the NesRGB kit.

 

Hey guys, just wanted to ask some questions since the 2 famicoms I AV modded seem to have problems.

The first one I did resulted in a perpetual pink screen, along with the rare occasional cyan and purple.
http://m.imgur.com/a/AL458

The second one was more consistent though. A beige screen when nothing is plugged in, and a white screen when a game is plugged in.
http://m.imgur.com/a/mvikT

The game tested was 8BIT MUSIC POWER.

Any ideas how I can fix these? Or what the problem is?

 

Got a different game to try with or tried your game in a different working Famicom? A dirty or bad cart could cause blank screen.

 

Will try.... Problem is I don't really know what to expect when looking for a blank screen. Everyone just shows videos of them in action but nothing about it when they're not switched on....

 

Alright! Got another cartridge and tested it out, perfectly working!