My sennheiser headphones do not work even in bypass mode. Sometimes if I jiggle the tab that switches between bypass and normal I can get sound in the right ear but not left. It will correct itself sporadically but I just want to know how to fix it myself if possible. What is wrong? Help please!
SOURCE: replacing headphone connector
The impedance or resistance of the two different sets of wires might be different. The higher the impedance the less signal. If your cable is long enough you are better off spending the five or so dollars for a new plug. Red is right, green or blue is left and copper is ground.( Usually) Unfortunately not all manufacturers agree. Also what could have happened is a short between the wires that you soldered.Make sure they are physically separated from each other and insulated.
SOURCE: Replacement connector for Sennheiser PX 250 doesn't work...
The bare copper conductor wire is the screening/common earth to the two signal wires of green and red. The important connection is the copper wire which goes to the jack plug earth which is the section furthest from the tip. The other two are the left and right signal connections. If you get these the wrong way round you will just have to swap them over. Check if they are the right way round by using the balance control on your amplifier or whatever. Have you checked that the problem is not with the headphone amplifier within your equipment? Don't rely on OK sound from loudspeakers as the headphones may be fed from separate op-amp output chip. Try another pair of cheap and cheerful headphones to make sure.
SOURCE: how do u fix a disconnected wire in a left ear
Try this link:http://www.metacafe.com/watch/1045725/how_to_solder_how_to_repair_headphones/
SOURCE: my left channel in sennheiser
As long as it is NOT a wireless or noise cancel type, try looking at my tip on headphones dodgy cable/plug problems.
SOURCE: Sennheiser HD201 headphones. Left hand cable
there will be 2 wires in different colors inside the cable,
these wires are enamel coated and sennheiser has best quality coating over the wires, so soldering this could be a bit messy - this is the procedure to do so
first take out these wire leads out for about a centimeter from both the ends, try to loosen the leads and yo will find small clustered strands of fiber wound between the leads try to remove those fibers (only the visible ones) completely from both the ends of the exposed leads.
take a blade and try to wipe out the enamel coatings from the wires (make sure that the 2 leads does not touch each other after removing the enamel) now connect (solder) both the ends of the wire with their respective leads (eg. red with red or green with green as applicable) now you should be good to go
Please understand this is a delicate job and require atmost attention use cello tapes wherever applicable and tie knots at correct places to avoid further damages
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