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My LG plasma 42 inch TV suffered a surge during a power outage. I've narrowed it down to the boxes in the picture alI I get is a simple click click.

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  • LG Master
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Fault in the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Apr 09, 2015

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Call a tv repair shop

Posted on Apr 09, 2015

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Posted on Jan 02, 2017

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SOURCE: 42 inch LG Plasma TV - Lost picture

Our LG 50" plasma tv screen went black after a popping noise but still had sound, after great diliberations decided to take the back off and have a peek!
We unplugged the tv and tested the fuses (there were three we could see) one had blown, the one on the left as you look at the back of the tv it also has one above it. We wrote the code/seriel number down and took the fuse to the electrical wholesalers Maplin and bought a pack of 10 fuses for £1.29 replaced the fuse in the tv and everything now fine!!!!!!
Hope this might be of use to anyone whose lost the picture after a loud popping/snacking noise but still has sound.

Posted on Jan 17, 2008

  • 92 Answers

SOURCE: 42 inch LG Plasma TV - Lost picture

sounds like it may be a software upgrade

Posted on Oct 31, 2007

  • 15 Answers

SOURCE: 42 inch LG Plasma TV - Lost picture

ysus pcb that supplies voltage to the panel is faulty

Posted on Dec 15, 2007

  • 12 Answers

SOURCE: 42 inch LG Plasma TV - Lost picture

Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.

Posted on Jul 07, 2009

  • 1779 Answers

SOURCE: samsung plasma 42 inchs with sound no picture

Most likely your Y Sustain panel has gone bad. I would have a qualified service center evaluate it to be sure.

Posted on Nov 07, 2009

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1 Answer

I have a 42 inch Hitachi plasma tv that is making a very loud static noice coming from the internal speakers. It stays at a contstant very loud volume unless I completly mute the tv or turn the volum


Based on what you have tried if a buzz or loud static via the speakers you have something wrong in the audio output circuit of the set--problem here is that circuit may be part of the Main board that processes all signal---a look inside---following the speaker leads back would lead you to that board.

A simple thing to do to narrow it a little (you may have done this) is with sound all the way off put your ear to the internal speaker--hear anything at all like a deep hum?

Depending on age of set and cost of the board likely bad it may or may not be a do it yourself repair.

SD TECH

Apr 26, 2012 | Hitachi P42H401 42 in. Plasma HDTV

1 Answer

Green light is on ...white noise sound but no picture


This TV finds the connected input sources
automatically for AV1, AV2 and Component 1-
2. It is presumed that RGB and HDMI/DVI
sources are connected.

Check your setup to see if the audio is turn off but if you have a clear picture you should have sound.

Time to call a TV Tech if you are not going to repair the unit.

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My 42 inch is powering on but is blank on the screen ..

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2 Answers

42 inch LG Plasma TV - Lost picture


This is almost certainly the device that sends electricity to the the plasma in the panel after failing. Bring to your local repair shop and expect to pay 300-400 parts and 100-200 labour.

Cheers,
Stephen

Apr 28, 2009 | LG 50PC1DRA 50 in. Plasma Television

1 Answer

42 inch LG Plasma TV - Lost picture


If you paid by cheque or credit card, that is your proof of purchase.

Mar 09, 2017 | LG 50PG6000 50 in. HD-Ready Plasma TV

2 Answers

42 inch LG Plasma TV - Lost picture


Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.

Feb 24, 2009 | LG 42LC3R 42 in. LCD TV

1 Answer

42 inch LG Plasma TV - Lost picture


ysus pcb that supplies voltage to the panel is faulty

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1 Answer

LG 42 PLASMA


check all inputs on tv ,also check if menu on tv is working ,make sure lines arent being produce by another source, cable box etcc..If menu and or OSD are affected .Then there is a good chance you have lightning damaged some where in signal section on tv .

Dec 03, 2007 | LG 42PX5D 42 in. Plasma HDTV

1 Answer

42 inch LG Plasma TV - Lost picture


sounds like it may be a software upgrade

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