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Retrace line&redesh on the screen

HOW TO SOLVE THE PROBLEM? PLS ANSWER

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Would you let me know model and make of TV?

Posted on Aug 06, 2008

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Posted on Jan 02, 2017

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Crt tv is half screen in vertical line and have retrace lines? what is the problem pls help...


Check the electrolytic capacitor used as video output supply voltage [280VDC], which goes to CRT base card. Usually this capacitor will have a value of 33 to 47MFD 350V. If this capacitor deteriate its value, this kind of fault can occur.

May 28, 2013 | Televison & Video

2 Answers

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

1 Answer

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

1 Answer

Cross lines ontop of screen my G21 M1 tv.. pls tell me how to solve it


The vertical output section of your TV has the fault. Replace all the electrolytic capacitors there, including smoothing capacitor to supply line to IC. Check for any loose solder termianls too. The lines you are seing across the screen, on it tope side, about 2 inches might be due to this fault, and are technically called [vertical retrace lines].

Apr 26, 2012 | Sony FD Trinitron WEGA KV-24FS120 24" TV

1 Answer

Philips l01.2a red screen with flyback lines and no picture


A model and confirm actual brand.

A general answer: If red screen with trace (retrace it is called) lines the issue is either with a picture tube or the Video output circuit for that color.

The more you explain and tell me the better I can assist you.

Mar 20, 2012 | Televison & Video

1 Answer

3 vertical very thin lines on display how can i fix them


This is due to retrace and can due to higher screen voltage or a fault in the VERTICAL section.
Reducing the screen voltage will confirm this and if so there is a failure of a 10-20MFD/250 Volt capacitor.
If not a weak capacitor in the vertical section will show the retrace and replacement of the cacpacitor in this section must solve the issue.

Oct 01, 2011 | iiyama Vision Master Pro 514 22" CRT...

1 Answer

Sir ihave philips tv 21PT94M tv will goes stand by & green retrace lines plese solve problem


pls check 180v dc from Eht or SMPS
[2]Video transister is sort or open if yes then replace
[3] Green cathode and filament is sorting in inside pictur tube.if yes then
STEP:
1. filament voltage is less then normal
2. tube charging mathod to solve this problum.

Jan 22, 2010 | Philips Televison & Video

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

Circuit board was damaged in electrical storm. Replaced with new board. Now, screen comes on full raster, but with retrace lines. Picture is very faded and barely visible behind lines. Sound is OK and...


I am unable to find in your statement about which brand or type of motherboard is used. One thing i come to know your using service mode kit. knowing in your statement your are a technical person. My simple idea is first you set the TV in standby mode using remote. Then in FBT reduce the screen control minimum position, the release standby. Now the tv is oscillated, now slightly increase screen control till get maximum video and zero retrace line set in position. Even no improvement give me clear picture of brand and microprocessor ic etc. there is a chances to solve by having the above details.

Aug 27, 2006 | Sanyo DS31520 31" TV

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