I have an original front loading NES with a problem I have been unable to solve. The composite audio output buzzes unless I wiggle with the cables. If it helps at all, the MODEL NO is NES-001 and the copyright is 1985, though that doesn't seem to be relevant to when and where this unit was manufactured.
I can get the audio to stop buzzing by readjusting the composite cables every time I start a game. It doesn't seem to matter where I leave them, the next game will buzz anyway, especially on title screens with bright backgrounds.
It all seems like it should be easy to fix, but I haven't found anything obvious on the board, or with the capacitors, outside of the shielded composite out box.
Any help would be appreciated.
Scott
The solder connection or the connector itself has been broken so the grounding side of the audio plug is getting disconnected.
Have you tested different cables ?
Can you disassemble the system and take a picture of the circuit board inside the metal box? The bottom lid is easy to remove.
I will try to get to this in the next week or so. I was hoping to not have to take apart the the shielding box, but I will do so if we are sure it can be repaired. Otherwise this NES is in good condition cosmetically.
Since I'm going to have the whole thing apart, is there a way to get carts to play more reliably aside from replacing the cartridge port?
Scott
Actually, I have already tried soldering the joints on the bottom of the board below the AV out unit to no effect. Is there something specific I should look for within the shielding box? If there is not, I will probably just trade this unit in with an RF cable and snag another one.
Thanks,
Scott
You think you can record the audio and post here ?
I can, but it's nothing remarkable. Try to record audio from a Genesis with a 32X hooked up and you will hear the same buzzing sound in the recording (even though the actual output doesn't seem to have it on the 32X's case. I'll post a video tomorrow showing the offending buzz of my NES console if I can.
Scott
this may work
http://www.famicomworld.com/forum/index.php?topic=3057.msg42243#msg42243 (http://www.famicomworld.com/forum/index.php?topic=3057.msg42243#msg42243)