Question about Coby Electronics Corporation Coby TFTV4025 40"" 1080p LCD TV - 16:9 - HDTV 1080p"

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Coby TFTV4025 in the middle have a yellow line and you can see the image but down the line the screen have light blue and red colors

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Check the back-light CCFL lamps, especitally at its cetner part.

Posted on Jul 29, 2013

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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My coby flatscreen comes on and works but strobes flashing light but works good just with strobing light ! whats going on?


If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.

Feb 22, 2015 | Coby TFTV4025 40" LCD TV 1920x1080, 60 Hz,...

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Is there a code number that needs to be entered to bring the convergence pattern or menu on screen.


From a user standpoint you would follow these steps to bring up your Convergence menu:

1) Press your MENU button.

2) Press the Right Cursor Button to enter the Picture menu.

3) Press the Down Cursor Button until you highlight the MANUAL CONVERGENCE choice on the menu.

4) You will then see the following choices on the right hand side of the menu: Convergence Red, Convergence Blue, Multipoint Red, Multi Blue, Save Multipoint.

5) Once you choose either the Red or Blue choices you will get a crosshair in the middle of your screen. You will then use either your Up, Down, Left, or Right Cursor buttons to get the two images to line up correctly. If you still have multi images on your screen in either Red or Blue you would then have to adjust the Multipoint choice for that color.

May 14, 2011 | Philips 51PP9100D 51 in. Television

1 Answer

Having a big yellow spot background in the middle of the picture.


Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!

Apr 09, 2010 | Hitachi 50VS69 50" Projection HDTV

1 Answer

I replaced the main lamp 6 months ago. Now I have blue on the right, yellow in the middle and normal color on the left. I also have a ghost image of tree branches on the whole screen.


Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Found it here:http://www.discount-merchant.com/SONY-1-758-484-22-p/1180916.htm Have a blessed one!

Mar 31, 2010 | Sony Grand WEGA KF60XBR800 60" Rear...

1 Answer

My Sony Projection TV middle of the screen curves down on top and curves up on bottom. Picture looks dubble like 3D, screen looks like concaved. Left side of the screen color is light green and blue, right...


This is a very common failure on Projection sets. Its called a convergence problem.
You may have one or more of the following symptoms.
Screen looks 3D
Colors don't line up
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed or warped.
No Audio / No Video - Makes Chirping Sounds
You can see some examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Sep 26, 2009 | Sony KP-51WS510 51" Rear Projection...

1 Answer

Red/Orange horizontal lines


it could be that the tv convergence circuit is going bad. One shure way of finding out is to go to the tv feature menu(picture,audio etc.) and select the customer convergence setting, you should get a cross hair pattern(cross in middle of screen). that cross should be white and by aligning the red or blue colors they should move left, right, up or down

Jul 27, 2009 | Akai PT5492S 54" Rear Projection...

1 Answer

Yellow stripe across middle of the picture


yes rteh color of the wires(ends)red,blue,green,sounds like they may ahve gone bad or are interchanged, what does it do with a dvd picture

May 23, 2009 | Hitachi 42V710 42" Rear Projection HDTV

1 Answer

Color is mostly yellow and blue with double images


you have lost the convergence IC`s in your set, this really isn`t a diy repair unless you are very proficient in un-soldering and re-soldering components, once replaced there will be an alignment procedure as well that will require the service manual also, if you have more questions feel free to ask away, video-tek

Feb 04, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Black Screen with vertical lines down the side?


· http://esupport.sony.com/perl/news-item.pl?news_id=24
· Which models are affected with the "flicker" problem?
A1: There are 12 models in total: KDP57XBR2, KDP65XBR2, KP46WT500, KP51HW40, KP51WS500, KP57HW40, KP57WS500, KP57WV600, KP57WV700, KP65WS500, KP65WV600 and KP65WV700.

Jan 03, 2008 | Sony KP-57HW40 57" Rear Projection...

3 Answers

How to adjust picture on projection tv


i have a 52" rca projection , and the screen looks like this ") (" on the sides can i do something to straiten it back out?

Aug 28, 2007 | Panasonic PT-53TW53 53" Rear Projection...

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