20 Most Recent LG 19LH20 19 in. LCD HDTV Questions & Answers

Check and replace damaged component/s at it main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts.

LG 19LH20 19 in.... | Answered on Apr 03, 2014

Either set is on or not---question could use some more explanation if possible.

LG 19LH20 19 in.... | Answered on Jun 15, 2012

You may wish to try the unit in a different electrical outlet in another part of the house to ensure that the house's electrical breaker did not trip for that particular circuit. You can also test the wall socket with a voltmeter if you have one or you can just use a standard plug in reading lamp to confirm that you have power at the outlet.

If you do not have good power at the outlet, then you may just need to reset the breaker for that circuit at the house's main electrical panel.

If you do have good power at the plug, then it may just be a blown fuse in your TV. Many of these TV's have a small fuse holder built right into the rear plastic cover right where the power cable enters the enclosure which can be easily accessed without having to open up the whole TV enclosure. Just unplug the power to the set and gently pop open the little fuse holder cover to reveal the fuse inside. Here is a link to an image of a common type:


Just use your mouse to click on the link, which is the underlined and highlighted text just above. This will open a new web browser page automatically for you and allow you to view the information and items at the website indicated.

Then just check the fuse for continuity with a multimeter to see if it is bad. Replace it with a brand new one of equal value if necessary.

If your set does not have an external fuse, then you may have an internal power supply circuit board problem which will require some disassembly of the TV enclosure in order to access and troubleshoot.

Before you attempt any kind of disassembly or home repair, you should actually check with your retailer where you purchased the item about any possibility of a warranty return or exchange. If the warranty is already expired then you have nothing to lose by opening it up and having a look, assuming of course that you have at least some basic electrical safety knowledge and that you follow all the necessary precautions.

Good luck, I hope this was helpful.


LG 19LH20 19 in.... | Answered on Sep 20, 2011


Problem is in either power supply or the Y-Sustain board.

The Y-Sustain is a relatively large board out of which go connections to the side of the display; it's therefore closer to either the left or the right side of the display, has at least one rather large heat sink on it and fat power cables connecting it to the main power supply.

Often there are fuses on that board - one or more.

if they are blown you can try to replace them, but expect them to blow again - usually the whole board needs to be replaced.

Hope this will help in solving the problem.....

LG 19LH20 19 in.... | Answered on Aug 08, 2011

check the power supply board , you need to change or repair it

LG 19LH20 19 in.... | Answered on Dec 29, 2010

Freeview TV's just require an outside aerial. That's it.

LG 19LH20 19 in.... | Answered on Dec 29, 2010

tried to switch on with remote from standby the red light on the tv just flashes in a repeat pattern of five

LG 19LH20 19 in.... | Answered on Oct 06, 2010

you need to change its inverter. it is spoilt.

LG 19LH20 19 in.... | Answered on Mar 25, 2010

i have exactly the same problem and my tv is just 2 weeks old !!
any soloutions?

LG 19LH20 19 in.... | Answered on Jan 22, 2010

power supply str is burn plz so the str no.

LG Televison &... | Answered on Jul 31, 2020

And what is the problem I wonder ...............

LG Televison &... | Answered on Jul 25, 2020

check power at the socket, if there is take it to an engineer. Don't try and fix it yourself. This page if full of tales of people who change boards and never end up with a working set. The course is 2 years, the test equipment costs thousands.

LG Televison &... | Answered on Jul 24, 2020

The power supply will shut down if there is an over voltage/over current situation in a secondary supply.
Check the secondary side of the power supply.

LG Televison &... | Answered on Jul 20, 2020

your tv is getting hot,get a can of air and blow out the back of the tv,then make sure it is farther than 6 inches from a wall and air can get into all air holes

LG Televison &... | Answered on Jul 16, 2020

Probably faulty Y drive board. Take some measurements and see which board has the short circuit transistors.

LG Televison &... | Answered on Jul 15, 2020

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as above red led flashes 4 5 times stops

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