Question about Toshiba 20AS22 20" TV

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There are black bars coming from the top and bottom of my tv screen. i have a toshiba model # 20AS22 tv. i replaced the vertical output I.C. but the bars are still present. what do i do ??

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Check vertical section , thare is a condensor must be weak

Posted on Jun 03, 2010

Testimonial: "thanx a lot, i changed all four condensers in the vertical section, my tv is now back to normal, thanks. 10 +."

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What can be done to repair picture to my TV


Vertical scan output section circuit should be checked. Contact any service technician.

Aug 30, 2014 | Toshiba CF32H40 32" TV

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Our Toshiba Regza LCD TV has developed a thin white vertical line down one side and a green horizontal line across the middle. The bottom half of the TV screen then comes and goes in muted and faded...


Hello,

All Plasma and LCD TV 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 . Good luck in solving the problem....

Aug 06, 2011 | Televison & Video

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Have a black line across the screen on my Toshiba 32AV502R LCD TV, no matter what input I'm using. It started as a bunch of visual "noise" and after turning it off and on several times,...


Hello,

All Plasma and LCD TV 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
Good luck in solving the problem.

Jun 09, 2011 | Toshiba 32AV502R LCD TV

1 Answer

I HAVE GOOD AUDIO BUT A THIN LINE IN THE MIDDLE OF THE SCREEN THAT HAS VIDEO. ALSO THE SCREEN IS BLACK ON THE TOP AND BOTTOM WITH THE THIN LINE OF VIDEO IN THE MIDDLE.


Have you vertical deflection circuit checked for bad Vertical IC, and or Bad vertical Capacitors in the vert output section for the deflection board. Also have Vertical output Pump up Capacitor replaced, also have B+ voltage check coming from flyback transformer, for any open fusible resistors

Oct 12, 2009 | JVC AV-20120 TV

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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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Black Vertical line appeared on my Daewoo Plasma


Bad connection somewhere along the bottom or top of the panel, there are boards most likely along the bottom of the screen that control vertical drawing, a connection that breaks as it is heated up sounds about right. check the connectors along the bottom. Be very careful because if you wreck em the screen is junk. The connector that will be at fault will be in direct line with the black bar.

Oct 28, 2008 | RCA L26WD26D 26 in. LCD TV

1 Answer

Vertical black line on a LCD screen


LCD screens do not work the same as CRT tvs no vertical output IC, you have a screen fault which would need the screen replacing

Oct 09, 2017 | Toshiba REGZA 42WLG66 42 in. HD-Ready LCD...

1 Answer

TV Bars


These are called vertical retrace lines. They are going to get worse untill you find the bad capacitor(s) or replace the vertical driver/output IC. Please, if you have not the solid state repair experience, get a pro to assist you in this repair as there are no user replaceable parts inside this set. Good Luck PLease do not forget to rate this thread.

Dec 11, 2006 | Curtis CM27002S 27" TV

1 Answer

Screen split with black bar through center, top of picture shows in bottom


It sounds as you desribe, the vertical output IC and or the b+ feed capacitor off the Hi voltage transformer feeding the vert. IC its required voltage. Not a really hard job to replace, but not for a handi person to do. This should be left to the professional, as there are no user serviceable parts inside this set and with the HI voltage and the safety issues its best to call somesone to assist you with this repair. Good Luck

Jun 14, 2006 | Sanyo DS31520 31" TV

1 Answer

Wide black bar on bottom of screen


I you know how to repair electronics its not a hard fix. The worst case would be the vertical output IC but im thinking th its nothing more then a capacitor in the verticle sweep circuit The average cost to repair this should be around 75 to 125 bucks. Good Luck

Jun 01, 2006 | Toshiba 32A60 32" TV

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