I've had my Grado SR-80s for a number of years now and recently they stopped working. I suspected one of the wires had come disconnected from the plug.
I replaced the original with a Neutrik NTP3RC plug. The left channel was still dead and the right channel worked a bit but when I moved the headphone cord around it cut in and out. I believe that something in the headphone cord itself is busted.
I took everything apart including removing all existing wire from within the headphone cups themselves.
With that said I have two questions.
1. Is there any testing I can do on each headphone to validate that it functions properly before ordering new wire?
2. Does any one recommend a specific website and have a bill of materials I could use as the basis for an order? It would be extremely helpful if one supplier had all the parts.