One of the two wires connected to one of the speakers on my MDR-V6 Sony headphones came loose so the sound in that speaker would intermittently shut off. When I would move the cable around the sound from that speaker would come back on then shut off later when the wire disconnected again.

I removed the speaker cover and attempted to solder the semi-disconnected wire back on, but now no matter which way I move the wire around no sound comes out of that speaker anymore.

In a video on Youtube the person doing the repair said to be careful to not melt the original solder that the wire is connected to because that might ruin the wire "trace". I did melt the original solder in addition to adding new solder.

So what do I do now? Thanks for any replies.