I just got my Sennheiser HD205 II yesterday and when i opened the box and tried the headphones, their was no sound from the left ear cup, I thought it was my phones fault (might not be getting enough power) then i tried it on my laptop, same result, then i tried it with my other laptop, same result. Don't know what to do.

SOURCE: My Sennheiser HD 205 suddenly

The two copper wires on your headphones are independent grounds for each channel. Twist them together and attach them to the ground cable ( black) of the new plug. The colored wires of the headphone correspond to the live wires of each channel, and the plug should have the same colors. Wiring together the grounds will not affect in any way the stereo separation, it is just that each ear needs its own ground. Cheaper headsets just transfer the ground from one ear to the other one through the metal headband.

SOURCE: Bad battery for my Sennheiser HDR 45 headphone

A replacement battery can be purchased from Sennheiser for $20.00.

Battery is: BA 151

Sennheiser Link:
http://www.sennheiserusa.com/newsite/productdetail.asp?transid=004146

SOURCE: Sennheiser TR136 Wireless Headphones Nothing Happens

I had a similar problem - after owning them for 4+ years, no sound we coming out, and no beeps -- nothing. The lights on the charger stand were on though.

I tried buying new rechargable AAA batteries and they were NIMH (nickel metalhydride?) and still didnt work. I borrowed a friend's pair of NICM (nickel cadmium?) AAA rechargables though and the problem was solved!

So, it would seem the some of the new chargable battery types might not work in older models of this unit (which is also called the RS 130 now in the US and Cdn web sites).

Hope this helps!

Grubhead

• 5755 Answers
• Posted on Feb 19, 2011

SOURCE: I need replacement ear cushions

Check out My tip on headphones, at the bottom of it you will find a link to a place that should have them. Just click my user name to find the tip.