20 Most Recent Sennheiser CX 500 Consumer Headphones - Page 9 Questions & Answers

I think this is common problem for headphones. To fix it you will have to solder cord's wires back to plug. If you have tools and some experience you'll be fine

Hello
Provide the model number of your Sennheiser Headphone please. Without it, it is not possible to place a solution to this problem. Provide the details to me by Fixya. OK.

Hi,

Often the rubber button is pushed into the microphone.
You can easily disasemble the unit.
Just open the batterycase, you will find some small torx screws.

Regards,
Gerard

probably ..they discharged to the max..and this way the connection was reset...If they are still functional ..you have to pair them again with the transmitter... and will work again ...If they work ..avoid in the future to discharge them totally ...
To pair they usually have a button that have to be pressed and will blink until picks up the signal ..or take a look in the manual to see the exact procedure for this model ..

If you fancy DIY have a look at my tip on headphones, just click my user name to find it.

Sennheiser normally have a 2 year warranty on their products.
You can check your specific model at their website - navigate to the model number and click on download user instructions pdf (top right of page)
http://www.sennheiser.co.uk/uk/home_en.nsf/root/private_microphones

It appears that the 238 has a cable connected to one headphone only.
If this is the case, try your existing cable.
If both ends look identical and plug into your music player easily, you could try any audio cable with
3.5mm mini plugs on each end.

I have used such to drive low powered speakers, and discount the hype about audio cables.

If you look on eBay, entering "sennheiser hd cable", a number of sellers have cables, none specifically claimed to fit.
The cheapest among the first few entries advising the cable has a 3.5mm plug at one end and a 2.5 mm plug at the other. If my first suggestion is unworkable, this will probably work.

Alternatively you could try to find one locally, to test for fit before purchase.

Check the other sellers for a look at pictures and possibly details if I got it wrong at the start and your cable has 2 connectors at one end.

If all else fails, take your headphones to you local electronics supplier, get plugs that fit and get a good friend with a soldering iron to make you up a cable.

One is for left, one for right, and one for ground...the usual color code is right=red, left=white, and ground = bare wire(or some other color)

My Sennheiser HDR 140 headphones charge whenever you hang them on the charger. The charger will "trickle" charge them to keep the batteries fully charged. If you find when you use it the batteries discharge quickly it's time to replace them.
My batteries are about 2 years old and I still get about 8-10 hrs of use before needing to recharge

it is not as long as the headphones are supported properly.

When a manufacturing defect is present the unit always fails in the first weeks of use. This is your case, and because it's still in the warranty you should return it and have it replaced.

First of all if the right side is working the wireless is working alright and the fault is in the processing section, the left audio preamplifier , the left side power amplifier and the left side earpiece.

So you might have to test with a audio signal to confirm from the preamplifier, the low-power amplifier driver for the earpiece and the earpiece.
Once this is confirmed the focus can be the wireless section, possible fault in the receiving section.
The use a a multimeter to check and knowledge of electronic circuits is necessary to check around this section. Please check and respond.

The advice/tip given is with the belief that you are competent. You must attempt to do it yourself only if you are technically/logically able, especially when dealing with delicate devices, damaging while trying to open, Probing electrical/electronic circuits with high voltage or delicate components. Since the advice given by me is with the inputs provided and not based on a visual inspection, there can be further reviews required in some cases.

It's been a while since you posted this, Were you able to get the problem solved? If you are in the NY metro area, I have an extra T6-9 and I could test to verify if the proble is with the headset or the Freesound unit.

You can get the manual below. The tr110 and the rs110 are the same unit.

http://ec1.images-amazon.com/media/i3d/01/A/man-migrate/MANUAL000072257.pdf

There is a small arrow on the plastic. Rotate the ear pad counter clockwise.