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 jack and a 3.5 jack which goes in the earphone connection.The tv has an optical audio point.How if i can do i connect the speakers,i have an optical digital cable and a 3.5 female to female connector,but it doent work.how can i overcome this problem many thanks

If your Tv has audio out terminals, buy long enough RCA cables and connect the other ends to the lower GPX (main unit) terminals and the others to the TV. If it doesent,get a 3.5mm stereo plug (like you use with portable devices) WITH 2 RCA PLUGS at the other end. Connect the 3.5mm to yourTV's earphone connector and the other end like I previously described. The satellite speakers have their own leads which are connected just above the audio in terminals.

You can't use 2 different speaker systems connected to one device output.
You could connect the CA speakers connected to your Roku and improve your TV sound. You could also use your microlab speakers connected to your computer to augment your computer based audio.

if their is a sound from the internal speaker then the problem is with in only in the earphone jack or in the connection. to access the internal part of the tv you need to remove the rear cover. locate the earphone jack terminal re soldered and check the connection at the board ( PCB). you can check also the continuity, attached powered pc speaker then use an analog tester and check weather their is a connection coming from the stereo input jack going to the terminal of the earphone jack of the tv. if no connection replace with new earphone jack. good luck hope this can helped.

If you have meant that the TV sound must come through the home system then you can connect the audio output ( RCA sockets) if present to the input of the home system AUX.
If there is no RCA output then the earphone socket can be used. Use a headphone to RCA conversion cord which can be used to connect to the home system. Ideally if you are able to use a resistor network to produce a impedance correction it will be good.

Since they're all passive speakers requiring amplification, you don't connect them directly to that TV.

It only has digital audio out and earphone analog audio. No amps or direct speaker connnections.

You might want to look at the manual for things like diagrams.

Hello
If picture is OK and there is no sound output from your tv, means either its speaker or the Sound output Ic is not working. The case of speaker fault can be easly detected without opening the TV. You just place your ear very near to the speaker side and switch on the TV by AC mains [not with remote control]. You may hear a "thumb" SOUND OR A "HUM" sound from it. If any one is there the internal speaker is working fine. The fault lies in audio output Ic stage. If there is no sound said above, speaker can be suspected. Befor confirming that the speaker is faulty, if your TV has an earphone or headphone jack in front, insert the earphone or headphone socket into it, and check whether there is any sound heard from it. If there is sound from headphone, means that the headphone socket is faulty, it does not bypass the sound to the speaker. When head phone is connected, the connection to the speaker will automatically cut of. When it is pulled out from the socket, the speaker connection will resume. If the changeover switch inside the earphone socket also show this kind of trouble. If the speaker inside is found faulty, unscrew it out of place after opening the TV, go for a same type and number, impedence and shape.
If there comes the above said "HUM" sound from the speaker, surely the Sound Output Ic is faulty. Replacing it will solve the probelm. Before replacing it, check it soldering points for any loose contact. It is best to resolder all suspected point is sound section before replacing the ic.
Note: In modern TVs there will be any trace of sound, without a video signal. Without video, sound is muted. ok.

If you have two subs to connect, place the speakers next to each other face down, you will notice that the connection points run in sequence +- and +-. Now connect the - (negative) from the one speaker, to the + (positive) of the other speaker. Now connect the open + from the one speaker and the open - from the other speaker to your amp.
If you have only one speaker it should be bridgeson your amp.
Your amp should have a bridging indication. On the connection points of each channel on the the amp, you should see a mark pointing to the first - and the last +. That will be your bridge

External speakers can be connected to the earphone jack,BUT remember the computer output is only designed to power earphones not big speakers. The speakers have to have an amp built in, like some desktop speakers. Also if you use an adapter to connect the speakers, you MUST make sure the grounds and output wires are matched correctly or you will fry the computers audio board or worse.

i dont know how ur tv does not have a earphone jack i wonder now a days how they make such tv's , pls try to take sound from audio LR if it helps other wise no hope to get sound on speakers sorry pls try to find in manual if there is any hidden headphone jack some where see in manual

Its your wire connection problem. Plz check that all the wires are connected to specific location. If wiares are ok then it might be internal circuit error! that should be repaired at authorised service stations.