Question about Emerson EWL20S5 20 in. EDTV-Ready LCD Television

1 Answer

Tv automatically shuts off after being on for a few seconds EWL20S5

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Vice President:

    An expert whose answer gotĀ voted for 100 times.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

  • Expert
  • 132 Answers

The most common problem for this set that will cause shutdown after a few seconds is the inverter board. Looking at the set from the back, it is the long slim board that is normally located on the far left side of most lcd tv's. There are 3 electrolytic capacitors located on this board, and changing them will fix a lot of these sets for this problem. The location numbers of the caps are c330, c350, and c370. If you have any experience working on electronics, I would start by changing these caps. They are very inexpensive. If you would rather just change the inverter board, try shopjimmy.com. That is a good place to buy boards for flat screen tvs.

Posted on Jul 29, 2010

Ad

2 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,
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

SOURCE: Emerson EWL20S5 20 in.

This TV has a network of diodes connected to a PROTECT-1 line monitored by the control IC. If any circuit pulls this line low, the control IC turns the system OFF. The diodes act to isolate all the circuits from each other, its called a diode-OR circuit.
You can troubleshoot by opening a diode which disconnects a circuit from pulling the line low. I had a hunch the EL backlight board was bad, so after opening that protect line the power stayed ON.

I found a bad .068uF 250V cap on the transformer primary, it measured .002uF. I've replaced the cap and the other two on the other transformers just for good measure.

It probably took more time than the TV is worth, but my friend's Mom will be happy, and thats worth it.
I hope this helps, look around for the service manual, it can be found online.

Posted on Jan 15, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Pairig tv EWL20S5 C


If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/

Dec 01, 2016 | Emerson EWL20S5 20 in. EDTV-Ready LCD...

1 Answer

Is emerson ewl20s5 tv digital or do I need a converter box?


The set can recieve analogue transmissions or cable signal only, for digital transmission a converter box would be needed

Mar 05, 2011 | Emerson EWL20S5 20 in. EDTV-Ready LCD...

1 Answer

TV will not stay powered up. The light comes on for a second, then powers off again.


you have a bad transfomer on your inverter board you need a tech to find which one or just replace the board

Sep 24, 2009 | Emerson EWL20S5 20 in. EDTV-Ready LCD...

1 Answer

Emerson tv goes off after a few seconds


The shutdown is probably caused by the power supply, although it may not be at fault, just trying to prevent a fire.

There may be other circuitry that is failing and drawing excessive current and most supplies are designed to turn off if the current drawn exceeds a certain maximum.

This is not a problem you can solve without technical skills.

Jul 06, 2008 | Emerson EWL20S5 20 in. EDTV-Ready LCD...

1 Answer

Emerson 20" lcd


bad power board or bad capacitors on the power board service required

May 27, 2008 | Emerson EWL20S5 20 in. EDTV-Ready LCD...

1 Answer

Parts for EWL20S5


By chance does it use the same type of cord as a computer or monitor? These cords can be found at local Radio Shacks, or if you live near a business which has a number of computers, and upgrades machines regularly, they might have extra cords lying around in their closet.

Otherwise, take a pic of the connection on the TV, take it to Radio Shack, and make a match there.

You could look in the TV's documentation- maybe get help there too.

Apr 14, 2008 | Emerson EWL20S5 20 in. EDTV-Ready LCD...

1 Answer

Prolbem


how old is tv?? and the best way to see if its the power botton is to try and hold for a few seconds and if it don't stay powered on then unplug and replug .....other then that sounds like power supply

Apr 01, 2008 | Emerson EWL20S5 20 in. EDTV-Ready LCD...

5 Answers

Emerson EWL20S5 20 in.


Ok, my tv was doing the exact same thing. What turned out to be wrong was one of the florescent backlight bulbs was broken. The tv was given to me, so I'm not sure how it got broken, but replacing the bulb repaired the tv.
This is not an extremely hard repair, but you have to be careful.Doing this repair entails disassembling the entire screen assembly. If you have any doubt at all about doing it, get a pro (like me). Getting a new bulb was not hard for me because I have several of these units in my shop with bad LCD screens; it may be a little harder for the general public.
I hope this helps.

Steve Wright.

Oct 24, 2007 | Emerson EWL20S5 20 in. EDTV-Ready LCD...

1 Answer

TV shuts off automatically


I Can Assure You That This Problem Is Associated With 2 Capicators On The Power Supply Board.
 

Aug 24, 2007 | Mitsubishi WD-52725 52". Rear Projection...

Not finding what you are looking for?
Emerson EWL20S5 20 in. EDTV-Ready LCD Television Logo

1,030 people viewed this question

Ask a Question

Usually answered in minutes!

Top Emerson Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74243 Answers

matt martin
matt martin

Level 3 Expert

1210 Answers

 Grubhead
Grubhead

Level 3 Expert

5126 Answers

Are you an Emerson Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...