WELLTECH 40699 FKH51A repair

Murdo's tip to trim off the cover of the AA battery base to expose a few mm of metal is spot on. Replacement rechargeable batteries for my Thomson wireless headphones did not charge, no green light, utterly frustrating, till I read Murdho's suggestion. Thanks for that

Only if they will fit and can be accessed without cutting wires.

Yes All batteries are subject to failure and eventually need to be replaced, some last longer than others it's a manufacturing consistency problem. ...

The battery in the headphones is most likely not taking a charge anymore and will need to be replaced with an equal value rechargeable battery

Not all rechargeable batteries will work instead of original batteries. The right battery should have metal body and not, as some batteries, isolated bottom part (-). Such batteries (which will not work) have a isolation ring around bottom connector. Philips has some kind of electronic check if bottom part is connected (integrated with) sides of the battery. So sides and the bottom of the right battery should be a sort of a can. Check the original battery to understand better what I am trying to explain.

Are you using the rechargeable battery that was supplied or have you ever replaced it?

If you're still using the same rechargeable battery then it's probably worth trying a decent set of AAA alkaline batteries or other rechargeable batteries.

If this doesn't solve your problem then you're probably right in the fact that there's a fault or loose connection in the automatic headband switch. The only real repair solution would be to have a look at them yourself as taking them anywhere for repair wouldn't be cost effective.

Try the SKull Candy website. They should tell where a repair center is that can do the job.

BATTERY INSTALLATION AND INFORMATION
Your wireless headphone unit requires two rechargeable AAA batteries.
Rechargeable batteries are uncharged when you purchase them. Before
you can use the wireless headphones, the batteries must be charged for
16 hours. Follow these steps to install and charge the batteries.
Installing the Rechargeable Batteries
Take care to follow these steps to correctly install the batteries.
1. On the right headphone, locate the battery compartment (1).
Use the finger depression on the compartment to turn the battery
compartment cover counterclockwise to remove the cover.
2. Insert two AAA rechargeable batteries, carefully following the
markings inside to ensure the batteries are inserted properly, with
the + and - ends in the correct positions.
3. Replace the battery compartment cover.
Charging the Rechargeable Batteries
To recharge the headset unit, follow the directions below. Note: The
cradle/transmitter on the WHP141 is not a recharging cradle, although
you may place the headset in the cradle during recharging.
Follow these steps to recharge the NiMH rechargeable batteries.
1. Make sure the ON/OFF switch (2), located on the right headphone,
is in the OFF position.
2. Connect the AC/DC main power adapter to the DC IN power
supply socket (11), located on the back of the cradle/transmitter.
3. Plug the adapter into an electrical outlet.
4. Connect the charging cable (10), located on the back of the
cradle/transmitter to the recharging input (3), located on the right
headphone. The headphones can either be placed in the
cradle/transmitter or placed next to the unit. If the headphones are
connected correctly, the charging LED indicator light on the
cradle/transmitter (8) illuminate.

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!

Replace the NiMh batteries. They might be bad. Could happen during power surges as you indicated you had. Let them charge up fully 14-18 hours as the book suggests.