im completely stumped by this ???

i have a set of sony MDR-V150 headphones. a while back my dog chewed the cable and only the left ear worked. but yesterday i found a position that both ears worked in. so today i decided i liked to have both sides working so i cut off the chewed part and tried re attatching the wires. i had no sound at all. i tested the resistence using some fancy thing my dad has it doesnt budge. the resistence just stays where it when not touching anything (therefore no connect/current?). i tried testing it in every way and got nothing. when i searched the headphones i found that the wiring is made of oxygen-free copper. not sure what that means but im sooo clueless right now. how can the wiring have not current? o and btw there are 4 wires.



left cable = red wire + copper wire



right cable = green wire + copper wire.



if anyone has any knowledge they can share on this please do. even my dad has no idea. in the mean time i will try to find some info on this wiring.



THANKS,



-Matt

0 ohms doesn't mean that there is no current, it means that there is no resistance. If you take a wire and measure it and get 0 ohms and then cut it in half and splice it and get, say, 6 ohms then there is a problem in the splice and it is adding resistance. if your getting zero ohms after splicing the wires back together than you did a good job and it sounds like there might be another problem somewhere..

He said it DIDNT change though, Im not sure about your multimeter, but mine starts at 100% resistance, meaning no connect-no current. There has to be something wrong with the wiring job. Did you solder them, or did you simply twist them together? Most headphone wires have a thin clear coating on them that needs to be melted (small flame, like a lighter) or scraped off (sharp knife, razor) before you can solder or twist them together.

Good luck.

there should be a 3 wire. so you have you ground. and 2 positives that go to eather headphone. look for a nesh on the inside of the wire.

Do yourself a favor and check the multimeter and make sure it's working correctly and that it doesn't have a blown fuse or that the leads aren't giving you an incorrect reading. Set it in ohms (the upside down horseshoe looking thing) and touch the two leads together. You should be getting a really low reading, preferably zero. If your getting 1 ohm or something to that effect get some different leads.





And I know he didn't get a change in readings I was just stating that so he would get the concept. I assume he didn't get a reading before fixing them since they were broke and that would have been pointless.



And if your gonna solder get yourself some heat shrink wrap and put the two ends of the wires together like you would your hands when praying and flatten it out before applying solder. Just as good as new and really hard to break the solder after that

OKOK thanks to everyone who responded! i found the problem. it turns out that each colored wire was made up of about 10-15 really small wires wrapped together and every one of those tiny wires had been sprayed with some sort of non conductive coating which is why i was getting to resistance (just like kobaj said). so i jsut scrapped it off with a blade and tested and it worked! =D lol i was thrilled that i finally had both sides working xD. after soldering wires, using a gluegun then finishing off with some electrical tape it worked GREAT! so thanks again everyone.



PS sorry i didnt respond eariler i have just been out of town for a few days.