20 Most Recent LG RU-42PX11 42 in. EDTV-Ready Plasma Television Questions & Answers

it may be the display panel that's going bad on it or it could be a loose ribbon cable going to the screen

LG RU-42PX11 42... | Answered on Nov 14, 2017

You need to pull the power supply out and replace the damaged caps on the board. Look for swollen, pushed up tops and leakage around the base of the caps.

You need soldering and basic electronics skills. You also need to pull apart that big tv and pull the power supply board!

You can look on Ebay for pullout boards from people who have broken their screens. It can get you a working board for cheap sometimes!

Good luck and be careful!

LG RU-42PX11 42... | Answered on May 17, 2017

i got 1 i can email it 2u

LG RU-42PX11 42... | Answered on May 17, 2017

The only simple thing you can do is to check the manual buttons on the set for any sticking. When pressing a button down you can feel the detent.(click) When releasing the button it should raise up freely. Sometimes while cleaning the cabinet moisture gets on the switch assembly under the buttons causing random activity. I have experienced three common causes for your problem. 1 sticking buttons 2 defective switch assembly. The assembly can be unplugged from the circuit to see if the problem goes away. 3 a problem with the microprocessor that controls the functions.( requires a qualified tech to repair
) hope this helps

LG RU-42PX11 42... | Answered on Jan 08, 2014

Common problem. See this site -


LG RU-42PX11 42... | Answered on Nov 29, 2012

Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" or "Flipcard" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. You can also click the [Home] tab to the latest updates. It will make search easy. There are more than 1350 posts to different brand TVs now. Pull up older posts there.

LG RU-42PX11 42... | Answered on Nov 28, 2012

To get into the service menu you need a service remote. Digital board is the problem.

LG RU-42PX11 42... | Answered on Nov 03, 2012

Unless it has it built into the set you cannot--need a box for say PAL to NTSC or whatever format the set uses that is being sent to the set.

They make set top boxes for this.

LG RU-42PX11 42... | Answered on Jun 15, 2012

That problem is usually have 2 causes..Its either power supply board or main board..

Please take this steps on how to determine the problem:
1. Open the back cover.
2. Check the power supply output...It should have 5vdc for the main board..12vdc or 16vdc for the audio and 24vdc for the back-light inverter..
3. If those 3 voltage supplies have encountered voltage drop...The problem could be on power supply board..
4. If the power supply output is normal..The problem could be on the main board...
5. If the problem is power supply you should check if the capacitors are bulged on the top and try to replaced it..If you can't do that you can purchased new power supply board..
6. If the problem is on main board there is no D.I.Y repair on that so you need to buy a new main board that fits to your TV..
Hope this solution will be helpful..

Thanks for using fixya...

LG RU-42PX11 42... | Answered on Jun 07, 2012

bad plasma screen , no economical to repair

LG RU-42PX11 42... | Answered on Feb 20, 2012

You should connect your TV to an Active DtH Connection or a Live TV Cable or even to a working DVD/VCD Player etc. and tune it to the frequency of the same and it should start working. If it doesn't, please contact Service Center.

LG RU-42PX11 42... | Answered on Jan 02, 2012

the ysus board is the problem .this is the board on the left .check the conecting ribons first.normaly its the one that conected to digital board .

LG RU-42PX11 42... | Answered on Nov 14, 2011

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