Question about LG 42PG20 42 in. Plasma HDTV

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Audio Problems I've bought 10 LG 42PG20 for the hotel I manage. I've been having problems with the sound of 3 of these plasmas. There's a strange vibration, mainly with bass sounds. It seems to be something wrong, but it is possible that 3 out of 10 came with the same failure?

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  • Anonymous Apr 15, 2009

    the sounds seem to come from 2 place.
    the circuit board and the speaker below...yes, bass caused the ratling/buzzing sound.. very annoying...
    LG please improve.


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Did you try to lower the Bass level from the Sound menu?

Posted on Apr 12, 2009

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I have a LG 42 inch plasma that turned off and doesnt want to turn back on. im thinking is the sensor is there anyone that can help out with this problem?


If you can turn it on with the button on the unit itself then it may be the IR sensor, but if you can't turn it on then it is very unlikely the sensor.

The power supply board of the 42PG20-UA is a known source of exactly this problem, although definitely not the only one that could possibly cause it.

Below is a link for a repair of the board, but the listing also contains a link to an article on how to test the power supply board alone, which is pretty useful before spending time and money sending it for repair. If anything you can rule one board out:
http://www.coppelltvrepair.com/p/716/lg-42pg20-ua-power-supply-board-repair-service

Nov 17, 2012 | LG 42PG20 42 in. Plasma HDTV

1 Answer

Does my tv have audio outputs?


42PG20 Connections
  • Connector Type
  • 1 x Composite video/audio input ( RCA phono x 3 ) - Rear ,
  • 1 x S-Video input ( 4 pin mini-DIN ) -
  • Rear , 1 x Digital audio output (optical) ( TOSLINK ) - Rear ,
  • 1 x Remote control ( Mini-phone 3.5 mm ) - Rear ,
  • 1 x Serial ( 9 pin D-Sub ) - Rear ,
  • 2 x Component video input ( RCA phono x 3 ) - Rear ,
  • 2 x Audio line-in ( RCA phono x 2 ) - Rear ,
  • 2 x HDMI input ( 19 pin HDMI Type A ) - Rear ,
  • 1 x VGA input ( 15 pin HD D-Sub (HD-15) ) - Rear ,
  • 1 x Audio line-in ( Mini-phone stereo 3.5 mm ) - Rear ,
  • 1 x Composite video/audio input ( RCA phono x 3 ) - Side ,
  • 1 x HDMI input ( 19 pin HDMI Type A ) - Side
42PG20 Audio System
  • Sound Output Mode Stereo
  • Surround Mode Yes
  • Sound Effects SRS TruSurround XT
  • Audio Controls Bass , Treble , Balance , Sound mode
  • Speakers Included 2 speakers
  • Output Power / Total 20 Watt
  • Additional Features Auto volume adjustment
  • Speaker(s) 2 x Right/left channel speaker - Built-in - 10 Watt

Feb 04, 2011 | LG 42PG20 42 in. Plasma HDTV

1 Answer

LG 42PG20 42" Plasma.


i have seen on some of those models bad power supplies. if you take the back off the tv you wil see a board in the top center that is the power supply board. you may have about 8-9 vented capacitors towards the left hand side of the board. they will look like they are exploding on the top some may even have black residue on the top that is the leaking electrolytic fluid. they will proabaly be 3300micro farad at 16volt high temp 105degree capacitors.

Jan 18, 2011 | LG 42PG20 42 in. Plasma HDTV

1 Answer

How do i switch my lg 42pg20-ua to digital audio outpu


you shouldn't need to switch anything, you do however need an audio reciever with a digital audio in jack, that's all connect the d.a.o. to the stereo in the right jack, and you should be good to go.

Dec 18, 2010 | LG 42PG20 42 in. Plasma HDTV

1 Answer

I have a 42 in. plasma LG flat screen the sound works but no picture.


y sustain boad and may be buffer boards as well common problem.

Jun 10, 2010 | LG 42PG20 42 in. Plasma HDTV

1 Answer

42PG20 42 in. HDTV Plasma TV: i have an lg plasma tv - 42pg20 when i turn o...


There are several known issues that can cause that.

The top candidate is the main board, the next is the Y-Main board.

Here's a link for repairing the power supply board of LG 42PG20, which also contains a link to how to test your own board to see if it is good or not:

http://www.coppelltvrepair.com/p/716/lg-42pg20-ua-power-supply-board-repair-service

Hope this helps!

May 17, 2010 | LG 42PG20 42 in. Plasma HDTV

1 Answer

Audio


Many times in the setup menu there is a audio configuration or a internal speaker configuration. This allows you to turn the internal speakers off. I would check that first.
Have a great day

Mar 31, 2010 | LG 42PG20 42 in. Plasma HDTV

2 Answers

Lg 42pg20 Plasma Will not turn on


If there is no LED burning to indicate there is power than the power supply is faulty.Repair is not verry easy to do with these complicated power supply's.

Nov 02, 2009 | LG 42PG20 42 in. Plasma HDTV

1 Answer

The TV made a pop sound, then the video went blank. Audio works


i think the power supply went bad. this needs a lg repairman i would notr try to repair your self,lots of hi-voltage going on there

Jul 09, 2009 | LG 42PG20 42 in. Plasma HDTV

1 Answer

Audio sync issues between my stereo and my new LG 42PG20.


i have samsung home cinema and a lg 42lc2d.
the samsung has 6 speakers but all i can get to work 1 front speaker.
when i trythe speakers on test mode they all work with the test sound
could you please help me
best regards ron mcneill

Dec 25, 2008 | LG 42PG20 42 in. Plasma HDTV

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