Question about Emerson EWF2704 TV

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Sound but no picture.

I have an Emerson EWF2704 flat screen TV and the picture won't come on. The sound works fine but there is no picture.

Posted by Arnold Huy on

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1 Answer

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The problem with your television appears to be in the high voltage power supply .  This power supply supports the high voltage on the anode of the picture tube, and the voltages for the picture tube, and other parts of the TV. If you do not have a background in electronics, might I suggest that you have a TV technician to come to your location and work on the TV.

 

I hope this provides some help

Thank you

Shuttle83

Posted on Oct 17, 2007

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Emerson -modle ewf2704 . tv went out no picture no sound wont turn on but when pluged in you hear a buzzing sound

My 55" LG did the same thing. Had to have tech come to my house and replace board. It is a factory defect in alot of LG TV not sure about Emerson
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The picture is to bright

problem in high voltage area, consult an expert
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Tv picture

The adjustment is done by opening the TV back cover, the part that looks like a cone(YOKE) that is mounted at the back of the picture tube needs to be slightly rotate it. To do this you will need to loose the screw that is holding that part and rotate it left or right.
Before doing this, unplug the TV from the main AC power.
Hope this helps.
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TV Powered Off, won't come back on

mine did the same thing, I took it to a TV repair store and they said it was a power surge which damaged the power source board. (possibly caused by lightening)
total cost to repair was $70.00 well worth since was only couple years old.
TV is working well.------we'll see for how long????
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Input select function... without a remote?

Whew! Found the NE116UD replacement for the EWF2704 Emerson TV (there are other models on the list as well), it can be ordered here for 24.95:

http://www.emerson.newremotecontrol.com/catalog_item.php?catnum=NE116UD

Hope that helps. This problem is certainly very irritating. I have never heard of a remote for 24.95, nice job Emerson -- never again!

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Emerson EWF2705, when pressing power it sounds like it is coming on but nothing happens

Hello DEBM,

 

The problem with your television appears to be in the high voltage power supply or the low voltage power supply. The set tries to come on but the shutdown circuitry turns the TV off. The shutdown circuit is a protective measure put into place to prevent overcurrent and overvoltage conditions by shutting down the TV when these conditions exist. If you do not have a background in electronics, might I suggest that you have a TV technician to come to your location and work on the TV.

 

I hope this helps

Thabk you,

Shuttle83

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Sound

  • check the following
  • check speaker &its wire & connector for loose.
  • check supply to sound output stage.
  • check components related to sound output stage.like low value resistor & coupling capacitor.
  • check for loose print in sound output stage.
  • hope this will help.
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Emerson tv model no. ewf2704

Hi: When you say small horizontal screen, ¿Do you mean picture does not fill the screen completely from top to button? ¿Do images display normally though they are smaller in size? ¿Is color and definition of signal OK? Please answer so I can have a better picture of the problem.
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Emerson EWF2704 problem

Look for vertical output LA7804 7-PIN IC near right rear of set on heatsink. Look for bad solder joints in that area also.
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