crwdns2934241:0crwdne2934241:0 markus weiher
crwdns2934249:0crwdne2934249:0:
there are normally only 2 possible faults. one would be the cable that connects the top with the bottom part and the other one would be a faulty earpiece. search ebay for the parts - but it's not an easy job!
crwdns2915684:0crwdne2915684:0:
open