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LG TV 42LF20 when starting time left side dark,after 10 minits it coming ok way

We check the power board no problem found

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 157 Answers

SOURCE: Philips LCD TV 37PF5520D/10. TV will not switch on.

philips has a problem with bad caps(swollen)in power supply-try shopjimmys.com enter model number-scroll down til you find power supply-order it simple to put in.if they do not have it write down part number then google it to find one--you also can change the bad caps yuorself if you are handy with a soldering iron

Posted on Sep 11, 2009

  • 157 Answers

SOURCE: TV green lite comes on for 2 seconds--goes back to

you posted the model number in reverse-----32pf double check-only thing i found so far -------replace c601 470/25v
someone else found a bad FET did u check them
do u have a pdf of this one

Posted on Sep 16, 2009

  • 1 Answer

SOURCE: LG 42PX4MVH PLASMA TV - Sound but no picture.

I have the same issue with my LG 42PC3DVA and I narrowed it down to the Y SUS board. After a little research there are a few items that are prone to go. The ceramic fuses (as you found), sometimes the capacitors on the Y SUS, Z SUS, and power supply go along with them You can tell because thy will be bulged at the top instead of flat. I replaced a few of my capacitors - they are only $0.89 each so it was MUCH cheaper than a board.

The other thing that is common on the Y SUS in particular are the FETs (also called MOSFET). They can be replaced if you are good with a soldering gun but they are static sensitive so be grounded. They are also a bit tricky to test so you may want to do some research on how to determine if this is the issue... or you can just replace the whole board.

Posted on Oct 28, 2009

  • 8457 Answers

SOURCE: My Sony Bravia 40 inch

The T-con board,the board that sit right at the bottom right in the middle of the center LCD panel.That board is dying.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish T-con board for the replacement.

Posted on May 27, 2010

Testimonial: "Thank you for identifying the problem but I would like to think that Sony will bend the rules a little on the one year guarantee as it is just the one year and I imagine the repair required might be expensive as the TV was to start with. I will ring Sony and test their public relations and discretion. Have a good day."

  • 63 Answers

SOURCE: I have 50" lg Plasma tv. When I start it first

The UF capacitors on your PSB-power supply board are blown. Your tv is putting itself in fault protection mode to keep it from damaging more components internally. Soon enough the TV won't come on at and you'll be left with a blinking fault LED.

Posted on Jun 30, 2010

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3 Answers

Picture is very dark on 1 side and taking longer to come on fully


SOUNDS TO ME LIKE THE SCREEN IS ON ITS WAY OUT SORRY!

Mar 06, 2014 | LG 42LC2D 42 in. LCD HDTV

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2008 Toshiba 46XF550u flat screen TV.


tried to check first loose connection connector or cold soldered component parts like ic in the X board, which send signal at the screen panel display.if ok, look for the t-con board re seat the lvds cable connector.then if can not get with re seating the t-con board must have bad component parts.

Sep 07, 2012 | Toshiba 46XF550U 46 LCD 1080P Refurbished...

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I have no power to my LG 26LC55 tv


Ok had the same issue with mine, opened the unit up and found the Dark Blue capacitor had blown, the top of the capacitor had bulged out, A friend ordered some 3300 uF 10V capacitors from RS components [you have to buy them in packs of 5]

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Lay the unit on a soft surface,

Undo the 4 large screws that hold the base on

Then undo the screws around the side, there is on the back as well

You will find 2 screws in the connections area


Lift the over off


The power board is located on the left hand side


Remove the power lead on the bottom of the board

Then the other cables.


Undo the 4 screws that hold the board on place


Locate the capacitor it's a blue one, run your fingers across the tops of the capacitors, if you find one that is leaking or raised that's failed


Turn the power board upside down

With a soldering iron and desolder tool, desolder the capacitor

Make note of the position of the + / - locations

Insert the new capacitor and resolder


Also check the power fuse located on the lower left of the power board

Good luck it worked just great with mine



Dec 14, 2010 | Televison & Video

4 Answers

I have a 21inch TV (LG golden eye) which is 10 years old from and now i am facing a problem that when i switched on the tv the standby LED of the tv blinks for a few seconds and then automatically off....


This is line output transformer problems. Before changing LOT,watch any dry soldering is there and also check vertical output ic is good or bad ?by replacement methode.
NOTE- if you know the protection pin, isolate the pin and switch on tv through 200watts bulb seriesly.then watch the symptomes.
Thanking you

Aug 04, 2010 | LG Televison & Video

1 Answer

I have 50" lg Plasma tv. When I start it first thing during the day the power comes on then shuts off. I have to repeat three or four times befor it comes on. I have checked the power source and the cord...


The UF capacitors on your PSB-power supply board are blown. Your tv is putting itself in fault protection mode to keep it from damaging more components internally. Soon enough the TV won't come on at and you'll be left with a blinking fault LED.

Jun 30, 2010 | LG 50PX4DR 50 in. Plasma TV

3 Answers

No picture, sound ok


I have a similar issue. Sometimes the entire screen goes black and sometimes only one-half - either the top or bottom half goes black. The only solution we have found is to gently tap the TV (usually the front side) and the picture will come back for awhile. It almost seems heat related as it only goes out after the first 10 minutes of use. There must be a fix to this.

Aug 25, 2008 | Philips 42PF7320A 42 in. Plasma HDTV

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