1.6 audio only working after I reinsert the AV cable

[KitMikro]

So I thought I was done with the 1.6 I recently fixed but it seems like there is only working audio after I reconnect the AV cable. I have tried component, composite and HDMI converter cable. All cables work with other consoles. So after a cold boot it has no audio, I reconnected the AV cable and the audio is working again... What could be causing this?

[KaosEngineer]

Not sure!  Dirty contacts. When you reseat the cable, it makes a good connection.

Try cleaning the AVIP connector's pins on the back of the console.  They may be covered with dust/gunk or corroded. 

I suggest obtaining a can of electronic contact cleaner or using 90%+ IPA and cotton swaps.