Question about LG Televison & Video

1 Answer

When on turn on my LG 47" 3d tv sometimes I don't get any sound. Could you help me please.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • LG Master
  • 5,569 Answers

A few guesses: If you have any headphones plugged in to a connector, cycle it several times; push in and pull out. These connectors can lose contact inside over time.
2nd guess: Badly flowed solder in the area of the audio circuitry. Although most boards are now soldered by robots and some 'flow-soldering,' out of thousands of such solder points intermittent joints can still happen.
Unless you have some knowledge of what to look for to locate the audio circuitry and some insulated tools to probe with, it may come down to a board replacement and that will be expensive if the audio section is part of the main board what is quite likely.
Another possibility is a connector problem between the power supply board and the main board. You should pull the AC plug and allow the set to rest overnight to ensure that any hazardous voltages have a chance to discharge.
Remove the back panel of the set and locate a smaller board with larger parts visible on it; this should be the power supply. Look for plugs on the main (larger board, smaller parts) board and the power supply (this latter may be also visibly related to the incoming AC line). Carefully pull any plugs you see related to these two boards and re-plug them several times; this will 'wipe' any oxidation from the surfaces.
Reassemble and try it.

Posted on Aug 21, 2011


1 Suggested Answer



Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Lg model 47ln5750 screen went black

That model is an LED Backlit unit. The LED driver could be bad or there could be a power supply problem. Sometimes the problem is a cable connection. Is there an picture that you can see in a dark room? If you can see a faint picture, the problem is probably the LED back light.

May 18, 2015 | LG 47LN5700 47" LED TV 1920x1080, 120 Hz,...

1 Answer

Remote doesn't work


Feb 17, 2013 | LG Electronics 47LM7600 47" Class FuHD...

1 Answer

Why do bright colors bounce on my lg tv?

I had this issue on a 40" Seiki TV. I turned off the 120hz setting and also the Noise Reduction settings in the Menu and it stopped.

Jan 12, 2013 | LG 47lw5300 47-inch 1080p 120hz Cinema 3d...

1 Answer

My brand new lg tv went out and has a burnt smell and one of the usb ports does not work. the tv will turn on, but there is no picture or sound

sounds like the main board need to be replaced. call lg for repair, if no warranty you are looking at $300 for the part plus repairman's fee

Jan 16, 2011 | LG 47LX6500BNDL Complete 3D Bundle 47 in...

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

37 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Televison & Video Experts


Level 3 Expert

13434 Answers

The Knight
The Knight

Level 3 Expert

76237 Answers


Level 3 Expert

438 Answers

Are you a LG Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides