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Retrace on screen - Computers & Internet

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Need more info. CRT I'm guessing. Either you have adjusted the vertical size control way out because the screen kept getting smaller. Adjust the vertical size to eleminate the retrace lines and the start checking the vertical out put circuit. Check your voltages. Most often the porblem is in the power supply or closely related. Screen voltage and contrast circuits may also be involved. You didn't give me much to go on. Good lluck.

Posted on Aug 26, 2008

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What's the common damage of a tv having retrace graylines on the screen??


If the screen voltage to CRT is abnormal [greater than normal]; this kind of retrace lines will be seen. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

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There are re-trace lines across the CRT.


check the G2 ,if to high retrace lines wil be vissable.If ok check the RGB,12V on picturetube panel.
Are the lines in one collor then check the circuit of theat collor

Jul 27, 2009 | Televison & Video

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HD52W140 White screen with retrace lines then shuts down


This has the ATC311 chassis. I have found that capacitor C14703 has actually been loose on the deflection board and that had caused the set to have a white screen with retrace lines then the set would shutdown. I resolderd this and normal operation was resumed.

on Feb 23, 2008 | RCA HD52W140 52" Rear Projection...

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Fault finding retrace line on screen ?


Check the video output supply voltage. If it is less than normal, retrace lines will be visible. If the screen voltage is greater than normal, the retrace lines will be visible. You should check all these. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/
Check these above said voltages at the CRT base card.

Apr 14, 2014 | Sansui Televison & Video

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Daewoo dtq-206sc have retrace lines


if retrace lines at top of picture the issue is in the vertical circuit--usually a bad filter cap and or the output chip (most of the caps that cause that are 220 uf or 330 uf and connected directly to one pin on the chip.

If retrace lines are across entire screen---likely the master screen control on the Flyback is set too high--causes excessive brightness and the retrace lines.

May 22, 2012 | Daewoo DTQ-20U6SC 20" TV

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TOP RETRACE LINES


What did you use to check the caps?


retrace can also be caused by the master screen being set too high.

Mar 23, 2012 | Televison & Video

1 Answer

How do we set the g2 voltage properly


turn blue black to off. turn tv to av mode. then adjust g2..until retrace lines appear on the screen.then decrease the g2 until the retrace lines disappear.

Apr 07, 2010 | Orion STV2763 27" TV

2 Answers

How do you repair or rather remove the retrace line on screen there is no picture


You have may the brighteness set up too high. if not retrace blanking is faulty. try turning the brighness down a bit.

Dec 19, 2009 | Daewoo DTQ-13P2FC 13" TV

1 Answer

Too much yellow does not adjust with normal drop screen adjustments. can i adjust the light beams.on my philips 50"


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} 1. Turn the green screen control on the Focus Block until retrace lines appear and gradually turn it back
Until the point where you can see the retrace line disappears, just before cutoff.
2. Turn the red screen control on the Focus Block until retrace lines appear and gradually turn it back
Until the point where you can see the retrace line disappears, just before cutoff.
3. Turn the blue screen control on the Focus Block until retrace lines appear and gradually turn it back
until the point where you can see the retrace line disappears, just before cutoff.
4. If the screen still appears too bright after proper G-2 adjustment, you need to adjust the sub-bright adjustment in the service menu
control down until screen cut-off. (Service data Range is usually 21 to 25 in the Service menu, for Sony sets you first go to category "MCP2", & then adjustment item 01( "SBRT")= subright.
For electrical the focus, put on the screen a clear picture of your choice thru an input of the TV set from a DVD, then pause the playback of the DVD Look into each color and rock that color focus control back and forth (turn the control one way then the other way slowing down as the picture goes into the best focus. till the picture looks sharp do each color till they all look in focus. NOTE: it is best to look into each color tube to achieve the best electrical focus. For optical focus please follow the manual lens adjustment in the sets service manual
By Larry Dillon

Aug 27, 2009 | Philips 50P8341 50" Rear Projection...

1 Answer

Panasonic TV has blank screen with retrace line


retrace lines usually means screen voltage is to high . that could mean bad picture tube.or flyback.

But there is something you could try. Be careful high voltage.on the back on the flyback transformer there to adjustments screen voltage and and focus go slightly counter clockwise or in your case clockwise that pot addustment will make it darker or lighter.If this does not fix it you have a flyback oy tue problem.
I hope this helps thanks doctor video leadingedgeelectronics 1987

May 03, 2008 | Televison & Video

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