20 Most Recent RCA WHP150C Consumer Headphones Questions & Answers

Hello Arthur. If the pot has an engraved / embossed / screen printed value on it you may also be able to buy an exact replacement from your local electronics component stockist. Otherwise take it with you as a sample. Pots are standard values, so most component stores will stock your one. This will be cheaper and speedier than ordering one. Regards, Clive.

for Q1 try this one
http://ec1.images-amazon.com/media/i3d/01/A/man-migrate/MANUAL000066699.pdf

for Q2 this one should do the trick
Mini StereoJack to Left and Right RCA Plugs

hope that helps...

Probably too late to help you, but the next person can benefit from this.

I soldered a jumper wire from the collector to emitter (outer two legs) on transistor Q1 on the back edge of the board near the top.

That keeps the voltage regulator on and the unit will transmit all the time instead of being shut off and on by the input sound level.

By the way, earlier my regulator went out so I used a beefy LM7812 to replace it.

My AC adapter also went bad, and it's a 24VDC type, so I used a larger supply form an old PC and put a toggle power switch on it.

You'll need to unplug the AC adapter form the wall or from the back of the unit to turn it off or install a switch somewhere.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Hi,

First, make sure the sound source is indeed outputting sound. The green light will only light up if there is a proper source. Then, find a good combination of volume level and tunning. Note that that the volume will affect tunning. Play around with both. Leave them both in the middle. Then move the dials until you find a good combination.

See my tip on replacing dodgy cables plugs on headphones. Just click my name. You will find the answer at the bottom of the page.

Just plug the RCA Headphones Base Station into the headphone or speaker jack on the back of your computer (the headphone or speaker jack usually being green in color), and turn the volume up in Microsoft Windows to about 75%, then adjust the volume control on your headphones to a comfortable level. (p.s. even if you don't use Microsoft Windows, turn the volume up to about 75%, as most computer sound chips are very similar in their output level.)

Input power is 12 volts, 150 milliamps

Power output is 12 volts, 150 Milliamps

the adapter is a thomson output is 19v-200ma--neg polarity