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I have a project to make a jack pack board for tv. there is 2 usb female plug on jack pack connected to TV. When tv turned on, the usb connectors are charging a phone or a iphone. how to make it works ( charging when the tv is off?)

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  • smartbuild16 Nov 14, 2010

    Thank you, so hel

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Ok, well the reason that when turned off there is no power at the USB ports, is because well.. it's turned off...when off, there is NO power supplied to anything, hence the term OFF.
The ONLY way one could do this would be to pick up a 5 V DC Voltage, from the "Standby" section of the set, which is always powered as long as it is connected to the mains. and route it via a pair of Diodes, onto the relevant connections + & - on the USB port. (Really you only have to take ONE wire the Positive wire to the USB, as the - is simply the ground connection). You need the diodes to stop any connection between the sections and the diodes will isolate it. This then would have the power ON at that USB port as long as the TV was ON. If you wished to Power two USB ports BOTH MUST be isolated with Diodes, I suggest some 1N4001 or the like.
i have a project to - silverdragon.gif

Posted on Nov 13, 2010

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Posted on Jan 02, 2017

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4 Answers

Sylvania wireless headphones



Instructions
1
Set up the transmitter. Wireless headphones rely on a transmitter that sends audio via infrared or radio waves to your headset. Use the digital audio output (coaxial or optical), RCA outputs (red and white) or headphone jack on your TV to connect the transmitter. The connection will depend upon which outputs are available on your TV and/or the transmitter.
2
Use an RCA-to-headphone adapter. If you don't have a headphone jack on your TV and the transmitter includes only a headphone connection, connect an RCA-to-female headphone connector. This will allow you to plug the wireless transmitter into the female headphone end and then hook the RCA ends into your television's audio outputs. You may also need a 3.5 mm (mini jack)-to-1/4-inch adapter if the headphone plug on the transmitter doesn't match the television jack.
Read more : http://www.ehow.com/how_4883556_use-wireless-headphones-tv.html
3
Set the transmitter on top of, or next to, the television. For infrared transmitters, you'll need a direct path between the headphones and the transmitter. Placing the transmitter on or near the TV will allow you to take advantage of the clear path you already have.
4
Plug in the transmitter and turn it on. Charge the headphones if necessary.
5
Turn on the headphones. Adjust the volume and settings and you're ready to watch TV.
Read more : http://www.ehow.com/how_4883556_use-wireless-headphones-tv.html

good luck

Nov 14, 2013 | Sylvania SYL-WH930GB Wireless Headphones

1 Answer

HOW I CAN HAVE OUTPUT FRO AUDIO LINE ROM LG 55LH5000???


Hi, sorry but Most LG's no longer have audio outputs. The easiest way to get it ,You need to take the audio output from the source i.e. "cable box output"..if you have of course...
However whether your TV has this output or not we need to make some tests..5 different connections possibilities provided below.
(not by priority..you can start with any of it ).Below ,there is a sample TV back panel picture as well
Possible CONNECTIONS:
1) 2x RCA ports red / white is audio out ( L + R ) of TV to Stereo..
2) You can get also the audio digital output from the TV to a A/V receiver. the tv's optical audio out is stereo only mainly designed for freeview or tv audio to be output,
set the audio ouput on the TV menu to Dolby Digital, connect a digital optical out directly to the A/V receiver to receive audio signals.
3) since your TV has :2 x HDMI, SCART, AV, Component Video, VGA-sub, USB 2.0, connections,you may use the SCART plug to get Audio output for your TV .
TV's SCART connector which has 21 pins and "2x Audio Output " pins should be in it.
you need to buy an adapter called " RGB Scart Male to 3 RCA AV Female Adapter Converter" that can easily be found any electronic Market..one example as found eBay URL is below..
http://cgi.ebay.com/RGB-Scart-Male-3-RCA-AV-Female-Adapter-Converter-/130389078197
After you get this adapter,you need to carry the audio signal from SCART's RCA plugs to your Receiver with a 2x RCA (white/red ) cable.(if this does not work ,mfg should state somewhere in the manual..as your TV's "SCART socket IN only" ) if you properly connect IN/OUT plugs you will able to get the audio signal of the TV thru stereo..I recommend 2 $ value "RGB-Scart-Male-3-RCA-AV-Female-Adapter-Converter" with IN/OUT switch on it.
4) use HDMI connection of TV if you have HDMI input on your stereo of course...
5) if these are not an audio-out on one of these connectors , so you'll need to use the headphone socket if you want to plug it into a stereo. you need a cable 2x RCA to 3.5mm Headphone jack.
( This is the last ditch solution , since it mutes the whole sound.) ..
NOTE: if you connect this, pls be careful,your TV voice level will drive the stereo volume....

Hope this helps!..if more help requires Would you please let me know the result ?
Take care and please
Remember to rate/vote and give me 4 Thumbs Up for us
to continue f
or Helping out the Community :)


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Jul 09, 2011 | Televison & Video

1 Answer

Want to connect pc speakers and subwoofer to lg37lc55 tv unfortunaly it doesnt have an earphone 3.5 connection point. My other smaller tv does, the speakers and subwoofer consist of a white and red audio...


Hello,
Your TV should have an AUDIO OUTPUT other than optic..at least " Headphones" output..
You can connect TV audio output with a RCA cable.
white and red audio jack....
since SUB has both RCA and "3,5mm Headphone female Jack"..here are the options;
** you need to buy a cable one end 3,5mm MALE headphone jack and the other end 2xRCA stereo (or 1x RCA for mono or you may need "Y cable " ) to be connected to your TV...
** or 2x RCA
white and red audio jack and connect from your TV..
**" "Headphones" output to SUB with 3,5 male-to-male cable ( the least recommended)
And you need to connect front,centre and rear speakers to your SUB as well...
Take care and if it succeeds please Remember to rate/vote and give me 4 Thumbs Up
for Helping out the Community :)

Hope this helps!

May 19, 2011 | LG 42LH40 LCD TV

1 Answer

I am attempting to use my sennheiser rs 110 headphones with my lcd-led tv. the componet jacks coming out of the transmitter are red and black. All my componets on the tv are red and white. so when i plug...


What are you plugging your 2 RCA connectors (from the headphones) into on the television?
You are correct, usually:
White = Left Red = Right

In this case
Black = Left Red = Right
Not sure....guess some manufacturers need to be different...
Back to the issue,
You to need to connect the Black to White and Red to Red to the TV BUT you need to make sure you are connecting to an OUTPUT and not to an INPUT on the TV. Most newer TV's do have an "audio out RCA jacks" on the TV but not all. It should be labeled at the connector if it is an output, or just another input. You can always consult the TV manual to be sure.

Few things you can do to test
  • Does your TV have a "headphone jack", use the adapter (2 RCA female - 3.5mm connector) to plug into the headphone jack and see if there is sound
  • Connect the Black and Red RCAs from the headphones directly to the another output, like a DVD player, CD Player etc....

I hope this helps,
Magoo

Mar 10, 2011 | Sennheiser RS 110 Consumer Headphones

1 Answer

Setting up my wii with my trutech tv


The Wii comes with standard AV jacks. Look for the female plug ends on your television that match the colors of the Wii's AV jacks, red, yellow, and white. Plug them in. Turn on TV and Wii. Use the input function of the TV to select the AV input (usually says "game", "video", or "input"). Play Wii.

Dec 16, 2009 | Televison & Video

1 Answer

I have a samsung NC10. I have connected to my TV via the PC cable. I can see the screen but here no sounds. I have connected the red/yellow/white audio cable to the tv. It has a jack plug on the other end....


The cable you are using is a rca audio/video cable. The colors translate to:
  • red=audio,right
  • white=audio,left
  • yellow=composite video
Your laptop headphone input uses a ⅛′ (3.5 mm) mono and stereo (TRS).

You need a Stereo 3.5mm mini phone plug male to 2 RCA female connectors.

Nov 07, 2009 | Samsung NC10-11PBK Netbook

1 Answer

I want to connect the z2300 speakers to an LCD tv. Do I need a special cable?


try to check your speaker if what type of cable your speaker have...your LCD tv i think its a RCA connector, so you have to insert the RCA connector to the output audio label,,,then the cable which is also an RCA output must be connected to a RCA female connector ....again the output the your female connector will depend to what your speaker output have....it its minijack or RCA then the output must be female RCA of mini jack also.

Oct 19, 2009 | Logitech Z-2300 Computer Speakers

1 Answer

GE Tv, replaced flyback... still nothing.


Have you ck 3 capacitors on deflection board cp150 2200uf 16v, if it is bad other 2 caps are 220uf 35v cp114 cp120 Your TV is really a RCA

Sep 16, 2009 | GE D52GW12 52" Rear Projection HDTV-Ready...

1 Answer

RCA 52 inch TV (turn on problems and channels rolling) HELP!


Your set uses the 195 series chasis. The only thing I can think of which would make the channels scroll by themselves is a contaminated PC board and pushbuttons behind the buttons on the front of the set. This is usually the case when spray cleaner or some other fluid is sprayed or spilled on the screen, and it drips down onto that board. To prove this, remove the back cover and on the top of the main chassis, where the top of the picture tubes are, is a small PC board with the remote reciever and a couple of jacks. The smaller jack is for the speakers and the larger jack is for the front panel PC board. Unplug the larger connector which goes up to the front PC board and then turn the set on with the remote. If the set works normally, the front PC board will have to be removed and cleaned or repaired (or just leave the jack unplugged and work the TV from the remote only). If you do not have any experience working inside projection sets then allow a qualified tech to handle it for you.

Aug 30, 2007 | RCA P52926 52" Rear Projection Television

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