Question about Daewoo DTQ-20N3FC 20" TV

2 Answers

Horizontal 'pinstripe' lines on all channels

My Daewoo tv has started to develop very thin horizontal lines across the screen on all channels (including av). They resemble pinstripes and are sometimes horizontal, sometimes with a slight angle (maybe 10' from horizontal). Can it be fixed?

Posted by on

  • vil1363 Feb 21, 2008

    i need this part tms-73c47ey



2 Answers

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

Pinstripes across tv screen

Posted on Dec 24, 2012

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 119 Answers

Sound like the screen control on the flyback is set just a little too high. the flyback has the red wire attached to the tube. the flyback has 2 small adjustable controls. if you look close enough 1 is marked focus & on is screen. turn the screen slightly to the left & look at your picture. the screen is like a master brightness & if it's up too high you will see what is called retrace lines. good luck.

Posted on Jan 16, 2007

  • r-r-r-really Jan 11, 2011

    I just picked up Sylvania 27" CRT type tv with similar problem. I will try this solution and re-post if I have anything.



1 Suggested Answer

  • 2 Answers

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

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.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Horizontal Band of Thin Red and Blue Lines on Screen

Sound like your Y-Sustain board has one foot in the grave. The Y upper buffer and Y lower buffer boards go when the Y Sus Goes too...

Mar 22, 2014 | Panasonic TCP46C2 46 in Plasma TV

1 Answer

I have horizontal lines over the whole tv,but the tv play you can see them good on some channels.Wat could be the problem?

There is mainly two reasons for this fault. The smoothing capacitor to video output supply voltage be bad, or the screen voltage to CRT is more than normal. These lines [thin horizontal lines runs across the screen; an inch apart or so to entire screen] is technically called 'vertical retrace lines' If you wish to get more details about this fault, check this site. It has details about it. Pull up older posts there.

Feb 10, 2013 | Televison & Video

1 Answer

Multiple horizontal lines runnning across the

It sounds as though you have a poor signal issue. Firstly try rescanning all the channels. If no difference check the aerial/dish connections, then rescan. Lastly check the aerial/dish externally for misalignment and connectability.

Jan 03, 2018 | Samsung Televison & Video

1 Answer

Horizontal lines on my LG 37'' 7000

Nothing you can do but be patient.

Dec 12, 2009 | Televison & Video

1 Answer

Black horizontal line across the middle of the plasma TV screen

It could be a defective Y-Buffer board, or a defective Plasma panel.

Oct 25, 2017 | Pioneer PDP-425CMX 42 in. Plasma...

1 Answer

Thin horizontal line across the screen

you need to replace the electrolytic capacitor in the horizontal section of of your tv sets,cause the capacitor is weak.need to repair

Jan 11, 2009 | Sharp 27C-240 27" TV

1 Answer

Black line running horizontally across TV screen

A line on an LCD, either horizontal or vertical usually means the video driver board is defective or the screen is defective, does it show up as black even on a dark screen? That means a line of LCD "shutter"s is not working and there is a problem that cant be fixed by a reboot or channel change. Bummer.

Feb 17, 2008 | Televison & Video

1 Answer

Horizontal lines on Screen

Sounds like an inverter problem. If the power supply is internal replace the capacitors coming out of the voltage regulators. These are usually 1000mf and/or 470mf. If that doesn't do the trick look up the numbers on the 8-pin chips that drive the secondary transformers on the inverter to see if they are getting the right voltages.
Good Luck!

Feb 14, 2008 | Gateway FPD2275W LCD Monitor

1 Answer

Washed out colours and thin red lines across the screen

your problem is in red video circuit. please get it done with skilled tech.

Oct 05, 2007 | Panasonic CT-32SL15 32" TV

Not finding what you are looking for?
Daewoo DTQ-20N3FC 20" TV Logo

Related Topics:

819 people viewed this question

Ask a Question

Usually answered in minutes!

Top Daewoo Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74999 Answers


Level 3 Expert

5318 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

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

Answer questions

Manuals & User Guides