critique my AV mod

Started by wwp8, June 14, 2017, 08:54:16 am

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wwp8

Hey guys, I would appreciate any help with this.

Firstly, it is the first time ever I have picked up a soldering iron, so its very messy. I tried to follow the steps from http://jpx72web.blogspot.co.uk/2016/11/famicom-av-mod-new.html

When I switch it on, I get nothing more than a buzzing noise.

From looking at google, I think the only thing I haven't done is earth the RCA sockets (I am hoping noone mentions these sockets are for audio only, cos I thought they will still work)
the original transistor 2SA937 snapped, so I ordered an identical transistor, I am not sure have I burnt anything or done anything, pics attached thanks in advance

https://drive.google.com/open?id=0B63c18tv7CQcYTFwaENJNUpRQnM

https://drive.google.com/open?id=0B63c18tv7CQcVVpjeXAwcVdJMTQ

https://drive.google.com/open?id=0B63c18tv7CQcV2w3blZLVS1nNzA

https://drive.google.com/open?id=0B63c18tv7CQcVFBvTzFReTFUb3c

wwp8

Just a quick update, so I have decided to ground the RCA plugs, connected back to the TV and nothing, I then decided to have it connected to the VCR method, strangely enough I have audio and no picture. the really odd thing is when I disconnected the RCA plugs the audio is still playing.
That's right, when I have NOTHING connected, just the power and switched on, the music is playing, not sure if its due to some interference,

how can this happen? I checked again and all the joints are going the correct way, does this mean I have a faulty PPU? before all this, I used to get an extremely fuzzy picture.

NintendoKing

My AV modified console works perfectly, and while I have no clue how it was performed, I could take pictures of the points and such.

wwp8

yes please, anything appreciated

NintendoKing


NintendoKing


toadhall

Might want to check the transistor. The pinouts might be different than the original one. That was one (of the many) problem I had when I was performing my own AV mod.
I had a copy of Gimmick when I was a kid but my mother threw it out while I was in college. :(