I own wireless headphones model whp150 i cant find a powercord. base unit has plug but only says dc in. no info on volts or adapter info where do i find proper unit

Not a problem. Take the base unit with you to Radio Shack and they will get you a proper replacement. (The numbers on the plug in to the unit will say how many volts Direct Current are required to operate is properly and the tag underneath will also state how many milliWatts of power are required at that voltage.) The key is buying the proper plug in end that fits the socket. Radio Shack has units with several socket tips so you may select the proper one. Make sure the polarity of the socket plug you use matches the wire polarity... the stripe on one side of the power cord is the + side on the socket tip.

you will need a 6v or six volt power adapter to use a house hold electrical outlet. You can use it in your vehicle if your adapter can convert 12 volt dc to 6volt dc

From the manual:

1. Plug the stereo audio cable into the headphone jack of your audio
source (e.g., stereo, TV, CD player, DVD, etc.). If your audio source
has two RCA output jacks instead of a headphone jack, use the
supplied Y cable to connect your headphones to the two (red and
white) RCA jacks.
2. Connect the other end of the stereo audio cable to the AUDIO IN
socket at the back of the recharging cradle/transmitter.
3. Connect the AC/DC main power adapter to the DC IN power
supply socket at the back of the recharging cradle/transmitter. Then,
connect the adapter to an electrical outlet.
Important: This power unit is intended to be correctly oriented in a
vertical or floor mount position.


Manual:
http://audiovox2.info/docs/common/AW772/AW772_OM.pdf

The base station for these headphones will have to be plugged into your AV unit. This is done with either a 1/8" jack or a 1/4" jack. Once the base station is plugged in, you will be able to use your wireless headphones.

You should be able to plug the base for the headphones into the Red and White AUDIO OUT jacks in the back of your tv.

Then make sure the base unit's power adapter is plugged in and it's turned on.

Then lift the headphones out of the cradle on the base and make sure they are turned on and the volume is turned up.

Good luck and post back if this helps or if you're still having trouble.

It no doubt can be repaired, but chances are it's going to be pricey. The power input circuit will be blown for sure, and probably most everything ahead of it, since voltage came in on the ground side also (a 220V line is just 2 120 lines, and it's usually more like 228-240). You would be better off trying to get one off ebay, or on sale, than to repair this one. Sorry to relay the bad news. Of course, the headphones will still be good, that's the good news.

There are universal multi-voltage adapters available at electronic hobby shops, they are available with various adapter plugs. Make sure you connect the adapter plug that matches the power socket for the airport AND also make SURE you connect it with the right polarity and set it for 5 volt setting. If you reverse the polarity you could destroy the airport.

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.

The problem is probably the AC adapter. If you have a voltmeter you can see what voltage is on the adapter output plug going to the base unit. Unplug the small plug from the base unit and measure. Since the batteries are 3.6 v, the power adapter plug needs to be something greater. Maybe 4.5 v. It should say on the AC adapter what it puts out (volts and max current). Usually the center is negative and the outside barrel of the plug is positive. Put the volt meter to 5v DC and put the black lead in the plug center and the red lead to the outside barrel of the small plug. If you measure a negative voltage, switch the leads. Make sure the Volt meter is not in current mode or you will be shorting the adapter at its output plug. If you get a reading larger the 4 volts then the problem is probably inside the base. There should be some circuitry to minimize charging current to the battery,.

go here to buy one
http://azsurplus.com/index.php?main_page=product_info&cPath=1_14&products_id=998
THOMSON PC-1920-DUL AC DC ADAPTER 19V 200mA CLASS 2 TRANSFORMER POWER SUPPLY