Question about Emerson LC320EM9 32 in. LCD HDTV

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TV HAS BKACK AT BOTTOM AND TOP AND PICTURE WAVES

TV HAS BLACK AT BOTTOM AND TOP AND PICTURE WAVES

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  • 42 Answers

You have a fault in the power pack, ths can only be repaired by a tv engineer..

Posted on Sep 27, 2009

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My LCD Samsung tv screen I red instead of black and the picture has waves of red


Sound like a LCD panel problem, but get it diagnosed to be sure.

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Unplug the power cord for about an hour or more and provide supply to the tv .

At times the power supply can cause this problem .

If you have any substances generating EM waves in and around tv remove it .

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When first turned my tv has waves and a black border top and bm ottom


A model number is key here and if you can post a photo here or somewhere of what it looks like that would really help.

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My screen is black at da top and bottom but its a pic in the middle.its just not showing the whole picture


it sounds like you have a widescreen video on your 4:3 tv. the black bars on top and bottom widen the screen picture.

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The picture all of a sudden became blurred , color convergence is not aligned and there is a pink wave at the top left of the screen and a green wave at the bottom of the screen. When the color is adjusted...


Tv have convergence problems,it dead.Colors lines R,G,B don't aligned.The tv convergence board is dead.The 2 STK convergence ICS and some or all it resistors are dead,these parts must be replaced to solved the tv pictures covergence problems.The shop,will cost u $300-350 for parts and labors.

Sep 18, 2010 | Sony KP-43HT20 43" Rear Projection...

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Jun 19, 2010 | Samsung - Projection TV replacement lamp...

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There are green and red waves on the top and bottom of my screen and the shapes in the picture are distorted. This is on a Hitachi 43FDX01B


Ur convergence it dead.U know how to solders?Buy a convergence kit at Tv repair World.com,Tvrepairkits.com.Replaced 2 convergence ICS,and all it resistors.Shop will cost u $300 for parts and labors.

Jan 27, 2010 | Hitachi 43FDX01B TV

1 Answer

Mitsubishi WX-65907 picture with sin waves


In the past I have replaced the filter caps in the power supply and it has solved this issue in other similar models in the Australian consumer market. If your keen to open the unit up and examine the electrolytic capacitors they ones that bulge on the top and somtimes leak are faulty. The picture below is a classic example of this:
http://www.mactec.com.au/wp-content/uploads/2009/03/g5_psu.jpg

May 07, 2009 | Mitsubishi WS-65907 65" Rear Projection...

1 Answer

Double Vision ...w/waves on top/bottom too much green.


1024x768 Normal 0 Convergence


When A REAR PROJECTION TV has coloured outlines or a 3D image the Convergence Circuits most likely need attention.

Replacing the output amplifiers (located within the Convergence IC's) allows the pictures to line up correctly, and no more color outlines.

This is the most common fault in all makes of rear projection TVs.

Some models of TV require major disassembly and considerable shop/manufacturer's support to repair because of their design that causes other power supply or vertical deflection problems. The poorly designed products require a "bench" repair that can typically cost from $350 t0 $700.

Some TVs are designed for on-site repair and have more reliable circuit design that does not usually cause damage to other parts of the TV when convergence chips fail. The ones that usually allow reliable on-site repair are JVC, Samsung and Hitachi.

It is normal to have some resistors in the circuit burn up or increase in value from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced with the right value or the chip may fail again.

This is not a simple repair like changing batteries or a fuse. Reading through the other posts shows many that try and end up with bigger problems.

Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with other "new and improved" IC's, like STK 392-150. These are devices with different characteristics and require different value resistors in the circuit. Replacing with the STK 392-150 will cause overheating of the resistors and a damaged IC.

If you are in Calgary, I can help. If not, get someone that has experience working on your JVC. My website is below with some costs and explanation.

calgaryconvergencerepair.weebly.com/convergence-explanation.html

Good Luck,

Easyab

Jun 05, 2008 | JVC AV-56WP74 56" Rear Projection...

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