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Television fault the top 1 inch of my screen keeps juddering

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Maybe they got dry capacitors near the vertical output or the vertical output himself is damaged,.

Posted on Jun 10, 2008

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Emerson 32 inch lcd tv there is a pure white line 3 inches high on the bottom of the picture.


If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

Nov 28, 2016 | Emerson Standard (CRT) Televisions

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There is a one inch white stripe on my 50" lg plasma tv. Any tips for a quick fix?


It seems to be a panel fault. Just visit this site and pull up older posts there to know more about symptoms of plasma panels fault. Illustrations are given. Compare with them to your screen's fault, and make it sure. surf the site by 'Timeslide' option, which can be selected from the drop-down menu at the top left of the display window. It will make search easy. Or type in the brand name to your set, in the search box at the top right.

Mar 31, 2013 | Standard (CRT) Televisions

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White horizontal lines on top of screen


Replace all the electrolytic capacitors in the vertical output section circuit. There will be 5 or 6 of them. Replace the at one time. The fault you see is technically called " vertical retrace lies".

Apr 28, 2012 | RCA 27F524T 27 inch TV

1 Answer

Not sure which philips i have, but suddenly lines have appeared at the top of the picture, going the width of the screen, about 4 inches down the screen, and moving downward.


It seems you may have a vertical linearity problem. Check all electrolytic capacitors around the frame output stage. The frame output ic may be at fault but this is less likely.
Regards Vintie

Aug 22, 2010 | Philips Standard (CRT) Televisions

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My 36 inch RCA tv has black bars on the top and bottom of the screen. The color is also dark even in daylight scenes. Can you help with this color.


as a general rule, vertical faults can be divided into two types: ones that cause geometric distortion (a circle will not be round) and those that simply black out a portion of the screen. the former are faults in the vertical oscillator, drive, or output stages. the latter are blanking faults. blanking faults are almost always caused by electrolytic capacitors changing value and thereby changing the timing of the pulses which blank the screen during vertical retrace. In other words, the pulses are turning off the video signals at the wrong time. the most common true vertical fault is geometric distortion and a foldover of white lines at the top of the screen. this is almost always caused by the electrolytic capacitor on or near the collector of the vertical output transistor or part of the IC which has the supply voltage (B+) on it. In the old tube days, the general rule was that bottom distortion was in the cathode of the output tube and distortion at the top was caused by a fault in the drive circuit. this may help the solution!!

Mar 27, 2009 | RCA F36673ET 36" TV

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31'sanyo tv analog has a white horizonal line thru it


There is a failure in the vertical amp section. This can be the main output IC, or any of the support components in this area.

An experienced tech can troubleshoot the set, and determine and service the fault.

Jerry G.

Apr 27, 2008 | Sanyo DS31590 31" TV

1 Answer

Hourglass shape on screen


you might tyr adjusting the eprom setting to correct the e/w pincushion fault,or call for service to adjust.

Nov 06, 2007 | RCA 32F531T 32" TV

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Tv screen has slight hourglass shape


A common fault are some of the electrolytic capacitors failing in the pin cushoning amp section, and probably in part of the scan amplifiers.

To service this will require the proper training and set-up to troubleshoot the set.

Take the set to a service center for an estimate. The cost can be at least an hour or two for the labour, and then the cost of the parts on top.

Jerry G.

Nov 06, 2007 | Sony KV-32S26 32" TV

1 Answer

Top of the screen Picture Problem


sound like you have 1 or a couple of leaky/bad capacitors in the tv's vertical circuit, typically, there sould be 5 to 10 caps. in all, but you just need 1 bad one to cause your problem. good luck.

Mar 13, 2007 | JVC AV-27230 27" TV

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