Question about LG 47LH90 47 in. HDTV LCD

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LG 47LH90-UB HDMI cable inputs do not have sound

No sound comes from HDMI inputs, other inputs have sound

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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lightnbaby
  • 36 Answers

SOURCE: i have a 2 to

Unplug power cord- safety first!
open backcover
check powersupply- top center right is p.s.
top left side of powersupply you'll see 5 capacitor 3300uF 10V.
see any pop up on top? replace it All with same rate or 16v is O.K.
do not use temperature rate 75c. Use 105C.
if you know how to solder. you save $300 least!

Posted on Mar 15, 2009

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  • 458 Answers

SOURCE: LG 37LG30 HDMI no sound problem

This is more probably a software fault within the TV. They need instructions for HDMI inputs & a no sound is a related fault. I would get in touch with your dealer to arrange the TV to be updated to cure this problem. Hope this helps.

Posted on Apr 18, 2009

joeymille916
  • 143 Answers

SOURCE: I'm staying at a Hotel in Atlanta that has 42 inch

I would call the front desk. They usually have a maintenance person who can help you with the connection. If the TV HDMI port is not functioning, they may be able to swap tv's or move you to another room! Good luck!

Posted on Oct 09, 2010

  • 3 Answers

SOURCE: only av input is working LG 42LC7D TV

I may put money that some one did stole your internal cable from the power supply to the main board !

Don't be surprised they did it to me at LG company .

Posted on Nov 15, 2010

  • 1 Answer

SOURCE: LG 37LC2D HDMI no signal (picture or sound) + crackling on audio

i have the same problem. i think they just get old, i solved the audio problem by taking the cove off the back and disconnecting the speakers, i now just use PC speakers, works grand. i haven't solved the HDMI problem yet..

Posted on Jan 17, 2011

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No video or audio from HDMI inputs, (DirecTV and Xbox), rca aux input or Component input. Over-the-air HDTV from the Antenna is perfect audio & video


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Feb 03, 2016 | RCA Televison & Video

1 Answer

I have a LG LHB335 Blu-Ray home theater system, & a LG TV I can get Full surround sound when the blu-ray is play a DVD but not when just watching Reg TV. I use a HDMI, should I hook up sonething else ?...


LG documentation states:

When you use SIMPLINK function, you have to

connect to the OPTICAL IN 1 jack to enjoy TV
sound to your speaker system.

Basically you need to have the Audio go from TV to receiver and setup receiver to that Input to output surround sound to all speakers.

If you have a cable box or satellite receiver, hook that output into the receivers input and that should work.

My setup is DirectTv HDMI output goes into the LG Home Theater HDMI Input 1, and LG goes HDMI output into the TV HDMI input 1.
so to watch DirectTV, I switch LG Home theater to HDMI Input 1. and TV is on HDMI input 1 (to view LG HDMI output from DriectTV, Blu-Ray, Vudu, etc.)

Jan 11, 2011 | LG LHB335 Theater System

1 Answer

Only av input is working LG 42LC7D TV


I may put money that some one did stole your internal cable from the power supply to the main board !

Don't be surprised they did it to me at LG company .

Jul 26, 2010 | LG 42LC7D-UB Television

1 Answer

How do i use it so my tv programming is in surround sound?


if the Comcast cable box has an HDMI output, it should connect directly to one of the TV HDMI inputs. Then connect the LG DVD unit HDMI output to the second HDMI input of the TV. Use two HDMI cables. Do not buy the expensive Monster HDMI cables. If you have already done so, I recommend you take it back for a refund, then buy the low cost HDMI cables which will work just as good and then you can bank the savings toward a new Porsche Boxter!! Now we have the video connected from both the cable box and the LG system.

Now--what do you do if the cable box does not have an HDMI output--just use its component output and your component cable (red, blue and green) to connect to the TV component input. This will still get the video to the TV and good HD pictures. Hum--do you have an HD cable box? You did not say and I just assumed that you did since you got the HDTV. If not, let me know with a follow up question and I will assist in that area further.

Now for the audio connections--The DVD player will not need any connections since it in the LG unit. The sound will come out the speakers when you start playing the DVD. The cable box is where we get the TV audio to feed the LG unit. If the cable box has an optical output, use an optical cable (again the low cost one)and connect to the optical input on the LG.
This will get the TV audio to the surround system. If no optical output, use the red and white (left/right) audio connections and connect to one of the two the LG audio inputs. To hear TV audio on the LG speakers, just switch to that input or the input associated with the optical input.

To watch DVDs, switch the TV to the HDMI input to which you connected the LG unit. For TV, go to the other HDMI input (or component input).
Switch the LG to the audio input to which you connected the cable box to get TV sound.

Hope this gives you food for thought. If so, and you have more questions, just come back in with a follow up.

Sep 11, 2009 | Audio Players & Recorders

1 Answer

I have a 2 to 3 year old lg 50px5d-ub and all of sudden the hdmi inputs will not work - shows no signal. component works great still but neither hdmi 1 or hdmi 2 works. tried two different cables and...


Unplug power cord- safety first!
open backcover
check powersupply- top center right is p.s.
top left side of powersupply you'll see 5 capacitor 3300uF 10V.
see any pop up on top? replace it All with same rate or 16v is O.K.
do not use temperature rate 75c. Use 105C.
if you know how to solder. you save $300 least!

Mar 11, 2009 | LG 50PX5D 50 in. Plasma HDTV

1 Answer

Can't play PS3 on LG 42LC7D tv


use hdmi cable from ps3 to rear of tv (you should have hdmi 1 & hdmi 2)then ppress input on remote until you get hdmi 1 or 2 on screen walaa

Dec 20, 2008 | LG 42LC7D-UB Television

1 Answer

HDTV says "No Signal"


for which input? TV? HDMI? Composit 1/2 ? 

Sep 20, 2008 | LG 42LC7D-UB Television

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