Question about LG 42LG30 42 in. LCD HDTV

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Lg tv turns on, but no pic/no sound? - LG 42LG30 42 in. LCD HDTV

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It can be the power supply due to lacking the 12 (16) vdc for the sound and the 24vdc for the backlight inverter board. You need to check the output voltages on the power supply first, it can be from bad DC filter caps (leaking/bulging top, high ESR), main board, etc. Right now the standby 5vdc is working at least.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

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Parts: www.shopjimmy.com

Posted on Jul 17, 2010

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Posted on Jan 02, 2017

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Connected to cable box sound no picture reboot left tv on 3 hrs. fine. turned off. 2 hours later turned on now no pic just sound. When the tv is cold no pic. when warm pic. ???


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May 13, 2017 | Sony Televison & Video

1 Answer

What caused it to shut down?


Probably abrupt power supply failure

Feb 22, 2016 | LG Televison & Video

1 Answer

I have a 47 lg lcd tv bought in 09. When i use hdmi for xbox 360 i get picture and sound but with ps3 no pic no sound. I just bought a sony bluray and get pic but no sound. I bought a lg bluray and get no...


To clarify, your TV is working correctly, since you get sound and video from all devices - Only your PS3 has no sound or video?

If your PS3 was previously used with regular AV cables (Red/White/Yellow) then you most likely need to do a PS3 video reset t output video over HDMI.

With the PS3 OFF, press and continue holding the power button until it turns on, beeps twice, and then turns back off. Do not release the power button during this process.

You may have to try the video reset a few times if it doesn't work right away.

After video reset, you should get sound and video over HDMI.

Nov 08, 2017 | LG 47LF11 LCD TV

1 Answer

Hi my lg lcd model no 42LB9DE works fine apart from 1 tv channel has perfect pic but no sounds have re-tuned tv many times to no avail... any ideas ? Tv antenna is is proper working order only 1 channel i...


by reading your problem the main thing is that your tuner of the tv is faulty or it can not tune the specific frequancy of the channel and its audio frequency just replace your tuner card

Feb 16, 2011 | LG Televison & Video

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

No pic or sound


Hi,
If you have confirmed that your power cable is connected properly from your TV to the wall outlet (bypass surge protector strip if you are using one), then no picture and no sound is typical of SMPS (Power Supply) board gone bad. It can cost upwards of $200 plus labor. The good thing is, LG generally offers two (2) years parts and labor warranty for their big screen TVs. LG Repair turn around time is usually fast. Goodluck!

FixYa!

Jun 30, 2008 | LG 42PX5D 42 in. Plasma HDTV

3 Answers

No picture


Hav 50 inch lg no pic but got sound wtf how do i fix it an there r 5 flashes b4 green light stayes on at the start

Apr 10, 2008 | LG 42LC2D 42 in. LCD HDTV

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