Question about Televison & Video

2 Answers

Thin horizontal green lines on the 35" Zenith TV model SM3547RK8. How can I fix this myself?

Posted by on

  • bustedlift07 Nov 09, 2010

    The answer you sent me is totally off base because my TV is 15 plus years old No LCD,No LED and no Plasma. it is a 35" Model SM3547RK8 console TV. I have intermittent horizontal thin lines on screen. Some are green tint,some white.Sometimes though-out whole screen. Sometimes partial top and partial bottom of screen. It is on all channels and I have cable TV. Some days it is so bad it is hard to watch some days it is partial and minor. It seems to be getting worse. Been going on for months now. I want to know how to fix and what parts do I need to fix it. thanks Bill

×

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 11,800 Answers

This is an old CRT tv. When the tube ages it's cutoff point (the value of the voltage on one of its cathodes at which the current that generates the image is completely cut off) gets lower so the return beam becomes visible. The image controller has some means to dynamically adjust that, but even this has its limits.
There is nothing left to fix in your tv - the tube has aged so much that the automatic adjustments can no longer compensate. The only way to fix that is to replace the tube but they are no longer produced for at least 10 years now.
This tv is dying of old age, time for a new one.

Posted on Nov 09, 2010

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,622 Answers

Hello,

All plasma an Lcd ts have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times resetting the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They an sometimes be fixed, but it is a pain. An yes I have done it, but the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken if you decide to tinker with em, the usually have lift locks that release them, but it is very easy to wreck em. Good luck.


I hope this will help in solving the problem.......

Posted on Nov 08, 2010

Ad

1 Suggested Answer

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a Bravia KDL 40BX421 that suddenly has green vertical lines on the bottom 1/4 of the screen. These lines are in a background bar that is mostly a reddish shade.


Thin vertical lines cover screen on Samsung LCD - AVS Forum ' Home ...

www.avsforum.com/.../1127410-thin-vertical-lines-cover-screen-samsun...

Mar 7, 2009 - 30 posts - ‎25 authors
Hi guys, Ive had this TV for about a year now - all of a sudden thin vertical lines havecovered my screen (show in link below) No matter what ...Missing: 40bx421

TV Repair Help for Vertical & Horizontal Lines on Your TV ...

? 2:47
https://www.youtube.com/watch?v=b0sI7LB4cZE
Apr 25, 2014 - Uploaded by ShopJimmy.com
TV Repair help with troubleshooting lines on your TV Screen. ... hi i have a sony bravia mdel # KDL46EX523. i have horizontal multi colored lines ... My TV has the following symptoms: - Horizontal lines from top to bottom of .... thick(like 1-1/12 inch) and a couple of green vertical lines next to the black one.Missing: kdl ‎40bx421

Flat Screen TV Has Lines Going Through Screen - Possible ...



Dec 16, 2015 | Televison & Video

1 Answer

Sanyo flat screen tv about 2 yrs old has thin colored horizontal lines down the right side


Nothing you can do about that...get used to it or change the TV.
It's a defect in the panel that can't be reliably fixed.

Feb 15, 2013 | Sanyo DP46848 LCD TV

1 Answer

Zenith tube tv has thin white lines but no picture and I can hear audio


Hello jreese, Hi, Most definitely its a horizontal output problem, your tv has no horizontal deflection to pull the screen vertically, the power transistor that produces the high voltage is bad, this needs to be replaced. definitely you always have sound, the audio section is a separate block from the high voltage block, go look for a technician to have this checked.

Mar 03, 2011 | Zenith B36A24Z 36" TV

1 Answer

No Picture


This is a problem with the vertical circuit. If you can solder, you should be able to fix this. With teh unit unplugged, open up the back and locate the vetical IC. This should be a small flat IC attached to a heatsink with about 9-11 pins. It may be marked LA7837 or something similar. Try resoldering hte pins. If that fails to resolve the problem, replace the IC. I will look up your specific model and try to get more details.

Dan

Sep 16, 2008 | Zenith Z25X22S 25" TV

1 Answer

Green lines


Due to vertical section failure horizontal line apprears. You did not mention about picture. Green horizontal line means with picture or without picture. With picture means there is some leakage. Without picture only singe horizontal line means vertical section totally not working. Particularly green horizontal line means maybe leads to jungle ic failure. Please mention your simptom clearly what you get and what you will not get both video and audio. It will be helpful to answer. Based on your question this is my small information.

May 24, 2008 | Sony KV-35S42 35" TV

1 Answer

Green picture with horizontal green lines...


John,

First, Id like to know how old is your unit? Also, the lines indicates in issue with regards to the lifespan of your tube. The dominant green color has something to do with a malfunctioning ray gun of your tube. However, i had encounter a unit that was resolved by simply resoldering the circuitry of same problem.
Why dont you try to resolder the board first.

Response is highly appreciated.


chris

Mar 29, 2008 | Toshiba 32AFX61 32" TV

1 Answer

Thin horizontal line


Solder bad connects in vertical circuit,especially vertical output
IC pins.................T.

Dec 26, 2007 | Toshiba 35A44 35" TV

1 Answer

Zenith ss2504ew9 has no vertical picture


either the vertical output is bad, or connections need resoldner at that point. Usually resoldnering takes care of it

Nov 15, 2006 | Zenith B25A74R 25" TV

1 Answer

Thin horizontal line across picture


I really dont understand the problem Could we see a picture of this please?

Jun 14, 2006 | Toshiba 35A44 35" TV

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

41 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74459 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

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

Answer questions

Manuals & User Guides

Loading...