I own a Sennheizer HDR45 headphone set and its not working. I took it to Best Buy and they looked at the battery has very low voltage

The strobe effect is an indication of insufficient contact at either the positive terminal or negative terminal. Check terminals for a tension (pressure) against the batteries.

I the red led only comes on dimly, the new batteries are suspect, or they are not charged. You need to establish if its the headphones or the batteries at fault. To check the headphones remove the batteries and connect up some none rechargeable battery of the same voltage to the headphone battery connections. To check the batteries use a multimeter to measure the voltage at their terminals while they are out of the headphones. If its low compared to the value printed on them, you can either try more new batteries again, or replace the headphones completely.

Well if you really dont want to buy new head phones , go to best buy. Or look up on google who fixes earphones and where they fix them at. But i highly suggest you to get a new pair of ear phones.

Buy a cable direct from Sennheiser, almost $10 less than eBay sellers! Link: http://shop.sennheiserusa.com/retail2002/ProductDetails.aspx?direct_cat=Parts&direct_prod=091581

Any trickle charger will do as long it is designed for 12 vlot batteries. Cheers

its just a matter of batteries...some are not powerful enough to operate the camera ....Try to change them and buy some real good ones..like Duracell or Tatra...do not make any compromises when buy the batteries...get the best cause these kinda cameras really require powerful ones...or ...try to get a set of rechargeable ...

You can get a replacement plug at any good electronics parts supplier. Check this site out for help on how to do the replacement:http://www.metacafe.com/watch/1045725/how_to_solder_how_to_repair_headphones/

Likely, what you are experiencing is the fact that the batteries in your speaker are running low. The sound of this speaker – as with any battery operated device – is reliant on fully-charged batteries. When the charge gets too low, you will experience sound distortion or abnormalities. Just put in fresh batteries, and you should be all set.

I had similar problem with my Minolta camera. There is no way to fight with them. DO NOT DEAL WITH SONY ANYMORE, my best answer. It looks like Sony has special position on support own products. We have to start consumer's protection company against of SONY. Personally, I used to sped more then $10,000 to by Sony's staff, if it works - it works, otherwise you are in trouble if you do not have extended warranty. NEVER BUY SONY!