Famicom AV port seems to be failing....

[unoclay]

Hey!  I went to use my Famicom last night and the socket seems to be failing on the AV out.

 

I think this is a modded Famicom--forgive my shitty memory--it does have longer controller chords installed, and I think the AV wire socket was modded.  It uses a "headphone jack" port (1/8th?) to send sound and video out via RCA cables---i use one cable that goes from headphone jack >> yellow/red/white RCA composite.  

 

If i push the headphone connector all the way in, the video scrambles and disappears, but i can hear the audio.  Sometimes, if i pull the chord "partway" out, i can get a full video/audio signal, but its not stable--if you move it the tiniest bit, it scrambles again.  

 

I tried out different cables and it seems to have the same problem regardless.

 

Anyone do repairs for something (hopefully simple) like this, or have a recommendation?

 

Thanks in advance!

[unoclay]

Bueller?   ....  Bueller?

[Memblers]

Sounds like you have it narrowed down the connector port.  It may have dust inside, or oxidation on the contacts.  If you're lucky you can clean it out, I've seen some recommendations for interdental brush and rubbing alcohol.  Or maybe another small nylon brush.  There are other tips about cleaning headphone jacks online.  Otherwise, the port might need to be replaced.

[unoclay]

@Memblers thanks for the idea!  I may as well try cleaning it as you recommend, given that it isnt working correctly.  I wonder who might repair a port like this?