Question about LG 42PC3DV 42 in. Plasma EDTV

2 Answers

TV shut off and won't turn back on??

My plasma is about 2 years old and it shut itself off. When I try to turn it back on you can hear the switch or "click" trying to come back on. The light on the front turns green and then it turns itself back off. So the light turns red again. Could it be something in the switch and how can this be fixed???

-Thanks

Posted by on

  • dturman Jan 30, 2009

    i have the same problem walked out the room and when i return the tv was off what could have caused this

×

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • LG Master
  • 2,778 Answers

The voltage rating of a condenser is not the voltage you can expect to find if you take a measurement across it, its the maximum voltage that can be safely applied, generally capacitors are rated at about 85% by engineers, although this isn't always true but a typical capacitor rated at 400VDC would have 340 to 360 volts across it.

Posted on Nov 10, 2017

  • Larry Nov 10, 2017

    Now to get to your problem, unfortunately a plasma TV is more complicated to service, they have about double the amount of boards and almost every board has a separate power regulator on the board. If your comfortable doing it pull the back off and get the voltages coming out of the PSON, it should be either a volt or 2 and go to around 5 when the power button is pushed or it will be at 5 and drop to a volt or 2, if that voltage is correct then we can go into some other tests, if its not right then it sounds like you have a main power supply issue. Here is the service manual for this set and it does have flow charts in it for troubleshooting but they can be kind of complex sometimes.https://www.manualslib.com/manual/818452...

×

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Habit-Forming:

    Visited the website for 3 consecutive days.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 122 Answers

Sounds like my Samsung. Searched web and said to check the capacitor (good thing there was only one capacitor) rated at 100 uf at 450 volts. Measured at the capacitor - has only 380 volts. Have a 150 uf and 220 uf at 400 volts. (Samsung's capacitor was 450 v.) Worrisome, yes. Tried all combination, but only 150 uf plus the 220 uf would work. Measured 390 volts.

Posted on Nov 07, 2017

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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

  • 45 Answers

SOURCE: plasma won't stay on red light flashes and shuts unit off

I had similar problem with 42fd9932, run for a few secs or minutes, shutdown and flash red led for ever. Fans in this unit were not causing shutdown although I could stop one and get the red led flashing thing.
Replace c2212 100uf, c2508 4.7uf changed to 10uf, c2664 100uf. I also added clip on heatsink to U7203 8.5v TO-220 case regulator( next to c2212) and a drop of oil to each fan(poked a hole through label center). Something else I did was add a 47 ohm 5w in parallel with fan ps 100 ohm 5 w resistor.
These parts are all located on the two power supply boards. Use Caution 380V is present on these boards. Allow a few min for caps to discharge.

Posted on Nov 04, 2007

pizzaguy3274
  • 4 Answers

SOURCE: 42pf9956/37 philps plasma

I don't know why but this got my TV on.
I took off the back cover and found the source of the clicking.
Two blue plastic rectangular relays in the exact middle.
When I pushed the power button, I felt the top relay click, and I saw a flash from the bottom one. (they are right next to each other)
I took a hair dryer and placed it over the two relays for about 1 minute and tried the power.
It clicked only 4 times and then came on!!!!!!!!!
For some reason heat helps the relay.
If anyone is a tech and can explain this, please do.
Good luck!!!!
My tv is on and it didn't cost me anything.
I just can't turn it off now!!!

Posted on Apr 11, 2008

SOURCE: Lg tv will not turn on, red light

i think your bulb is shot must be replaced

Posted on Apr 29, 2008

  • 1 Answer

SOURCE: 52" plasma tv - turns on - and I hear something reset inside

i hear a clicking noise- the clicking noise is most likely you ballast trying to power the lamp, but failing. this may indicate a defective ballast if you have recenty purchased a new lamp.I recomend you have your lamp tested to help narrow down the cause of the defect. It's highly unlikely for a new lamp to be dead on arrival

Posted on Dec 21, 2008

  • 135 Answers

SOURCE: Lg 42pc1da plasma tv wont turn on

will be a fault with either power or y-sus x-sus board is the tv still under warrenty if so request repair

Posted on Jan 18, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Hitachi 55" plasma TV. 5 years plus old, used a


Please let me know whats the model number of the tv so that I can tell you what the PCB LED diagnostics are pointing to. It sounds like a power supply or Main board issue so I would like to confirm which one of them it is.

Dec 22, 2011 | Hitachi 55HDS69 55 in. Plasma Television

2 Answers

Samsung 4254 Plasma keeps shutting itself off and then clicks like it is trying to turn itself back on. Sometimes it does turn back on and then shuts off again and keeps doing this over and over. The TV is...


take the back off the tv follow the power cord it will connect to an electrical board. Look at the board carefully you will find a few capacitors look at the top of the caps they should all appear flat if you see any that are bulged or expanded then more then likely that is your problem. I just had the exact same problem with my 50 inch plasma and I fixed it. I removed the back of the tv located two swollen caps unsolder them from the board tested them with a meter and confirmed that the larger 50volt 1500 uf 105deg was indeed burnt and the smaller swollen one 35v 1500uf was still good but changed it anyhow just because it looked like it didnt have much life left.

Apr 06, 2011 | Samsung HP-R4262 42 in. Plasma Television

1 Answer

My plasma turns itself off for about 10 20 mins


It seems that your unit has some sort of Thermal PSU fault, or a problem that is shutting down the Power Supply Unit, PSU. This happens so that no further damage, and possible fire will occur. After it shuts down and the faulty component(s) cool down, it restarts again until it once again goes critical and shuts down again only to repeat the cyle.
You need to take the unit to a reputable service centre/man and ask for a firm "Quote" for the work to be done.

Jan 21, 2010 | Samsung HP-R5072 50 in. Plasma HDTV

1 Answer

I have a Fujitsu 42'' PDS4221 - 10 years old - shuts itself off


See Fixya tips and tricks:-
'Fujitsu Plasma 42" random shutdown - continuous flashing red'

While the model of your set is slightly different, the checks described generally still apply, as it is very similar.

Nov 18, 2009 | Cars & Trucks

1 Answer

TV suddenly shut off, blinking red light in power button


The TV's power supply capacitors probably went bad.

Check with a mobile tv repair co. to see if it is worth fixing.

Dec 20, 2017 | JVC GD-V502U 50 in. Plasma Television

3 Answers

Panasonic 50 inch Plasma


it could have over heated you can try to reset it first unplug it for about five minutes and try to turn it on if that dont work the remote might have a set button try holding that down until the red light flashes twice, then turn it on if not then hold the power button down on the set for a good five seconds to see if that resets it. if none of that works you will have to go to panasonic .com for the reset instructions.with the red light blinking the power supply is most likely good you just need to reset i.

Dec 24, 2007 | Panasonic TH-42PD50U 42 in. Plasma EDTV

2 Answers

Heater won't shut off.


you say you hear a click. this indicates the relay is opening and closing, BUT the contacts may have welded itself shut. try replacing the relay - contactor.

Nov 09, 2007 | Heating & Cooling

Not finding what you are looking for?
LG 42PC3DV 42 in. Plasma EDTV Logo

Related Topics:

208 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Televison & Video Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

The Knight
The Knight

Level 3 Expert

75871 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18426 Answers

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

Answer questions

Manuals & User Guides

Loading...