Question about Standard (CRT) Televisions

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Vertical Distortion The lower 1/2 of the screen has normal display while upper 1/2 is stretched out. My daughter calls this ''Conehead'' distortion. Have tried externsl adjustments to no avail. Is there any chance of recovery from this infirmity

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  • cjhhenson122 Nov 28, 2008

    The horizonal picture is to wide

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  • 790 Answers

Hi

maybe your unit is in Zoom mode, try to set the Zoom settings...

Thanks!

Posted on Nov 28, 2008

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Zenith TV B27A24Z, Vert Size Adjust


To do this adjustment, you should enter the service mode option. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given.

Feb 27, 2014 | Zenith Standard (CRT) Televisions

1 Answer

How can I get full screen image without distortion on tv viewing? I only get 4:3, zoom, full and justified. Full looks stretched horizontally with tv, looks ok with dvd.


Hello
Most of the telivision transmissions are comes at an aspect ratio of 4:3. Wide aspect ratio is 16:9. If you try to see a picture with aspect ratio 4:3 to wide 16:9, it will look like stretched. it is not the fault of the tv. Most DVD recording have the aspect ratio of 16:9 [Wide]. This aspect ratio will be displayed correctly when your tv is also set to wide mode. If you select normal mode at this condition, the picture will be displayed elongated. Ok Your Tv has no probelm.

Oct 19, 2010 | Panasonic Standard (CRT) Televisions

2 Answers

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

1 Answer

Is my picture tube going?


Hi there yes this is a common problem with old tube tv's and yes eventually stuff seems to break down there is not alot you can really do about it to be honest ...my suggestion is that this is lifes way of saying upgrade ...this tv has done well ....if your looking to upgrade i would suggest going to a Samsung LA26C450 as a replacement television or if you are not so much a fan then a KLV26BX300 as a new option ,


Cheers

Nov 04, 2008 | Samsung TXK2754 27" TV

1 Answer

Color distortion


Move any speakers or electrical devices away from the set. It could also be anything electronic or magnetic. Anything near the set that generates a magnetic or electromagnetic field could be causing the distortion.

Jun 04, 2008 | Zenith A36B41W 36" TV

2 Answers

Partial tv picutre


By distortion do you mean that the top part is stretched? If so, you have bad caps in the vertical circuit. If you are comfortable working inside hte set and can solder, you can fix this yourself. Please post the model number and I can give you the details.
Dan

May 28, 2008 | Standard (CRT) Televisions

1 Answer

Black horizontal lines across bottom 1/3 of screen


This is due to vertical section failure. Change the vertical supply rectifier diode and supply filters. Then check zener diode leakage in pumpup circuit section. Also check any electrolytic capacitors leakage in vertical section. If it is old model tv change vertical height, vertical lenearity presets also. I hope given details useful to you.

Aug 23, 2007 | GE 27GT722 27" TV

1 Answer

HD distortion Problems


have a tech change your your vertical ic.there is also 1mf 50v cap that is located in the vertical circuit that usually goes bad have it change.good luck.

Aug 02, 2007 | Samsung TXM3296HF 32" TV

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