Koss Pro-4AA There is a bad connection where the cord enters the headphone. How doI disassemble the Koss Pro 4AA

Which parts?

I suspect that you actually have the Koss multimedia headphone/microphone model SB/45 as shown on the right earcup, not SB145.

If this is the case, the 3.5mm connector with the black plastic (contains a headphone symbol molded into the plastic) and red insulation bands separating the conductors is for the stereo headphones. The other 3.5mm connector with the tan plastic (contains a microphone symbol molded into the plastic) and black insulation bands is for the microphone.

You need to plug these into the microphone input and headphone output connectors on your computer or whatever device you are recording with. Then adjust the microphone input audio level and headphone output audio level on your recording device. Consult your manual for your recording device to locate the correct connectors and for instructions to adjust the audio levels.

Also, be sure to check and adjust the volume level control on the headphone cord if you don't hear anything after correctly connecting them to your recording device and adjusting the levels.

If you click my user name you will find a tip on headphones. At the bottom of it is a link to a site that may well have them.

you can not hear the sound

Koss offers a limited lifetime warranty. They may replace them for you. See:
http://koss.com/koss/kossweb.nsf/warrrepair5?openform

I have the same problem with my UR30 which have not been used very much and this is the path I'm going to try. Good luck!

Have you tried asking here yet:http://www.koss.com/koss/kossweb.nsf/cs-contact

Koss Porta Pro headphones have a lifetime warranty. If the cable is damaged, contact Koss directly. Good luck.

Koss has a no questions asked guarantee on some of the Pro-4 series, all you pay is shipping. Call the repair department to check.

Per the KOSS website your KSC 75 stereophone is covered under the Lifetime Warranty Policy. To have your product serviced, please send the stereophone along with $6.00 each ($7.00 Canadian) shipping and handling to the appropriate address for your location. In the United States: Koss Corporation 4129 N. Port Washington Ave. Milwaukee, WI 53212 1-800-USA-KOSS email: [email protected] In Canada call: 1-800-USA-KOSS email: [email protected] Outside US and Canada: Contact Koss S.A. for the distributor/repair centre nearest you: ++41-91-641.61.20 email: [email protected]