Question about Mitsubishi CS-40503 TV

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Mitusbishi tube

The t.v. screen is divided with black and black with picture going through the middle of the screen.

 

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Ok! you have defective vertical boost up! your defective parts is small capacitors or resistors! at vertical section!

Posted on Oct 22, 2007

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Replace vertical output IC,check caps in vertical power supply,
replace open 1 ohm resistor in B+ supply located near flyback
transformer.......T.

Posted on Oct 25, 2007

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1 Answer

Black vertical band on tv screen


Actually I am not sure about this one, but I like to suggest to leave the unit running for at least 24 hours and see what happens. Going by the amount of time it has not being used it is hard to tell what actually occurs, the advice is to leave it on standby for any period of time. See what happens anyway, you can't do anymore damage than you already got can you? Else, keep switching it on and off, it may clear it that way. If you are able get a update on-line, re-program you tv it worked for my Samsung 39 inch. Good Luck

Aug 15, 2014 | Televison & Video

1 Answer

Sony KP-57WV700


Hi. It seems that the g2 voltage of the picture tube is too high, resulting in a white screen, often with white horizontal lines. The g2 (= second grid) voltage is derived from the flyback high voltage. The voltage divider is mostly integrated in the flyback trafo housing.(including the adjustment knobs). A failure in this divider may lead to this defect. The static you hear may come from sparking in the divider. The flyback trafo is soldered onto the main printed cirrcuit board. Sometimes, one of the pins sits loose in the soldering pads.
Turn on the set and observe for any sparking around the entire flyback circuitry, and, or the flyback trafo itself
The screen turns black after a while, as a too high beamcurrent is detected. The set disables the flyback. Stand-by blinks meaning that there is a fault condition.
Be carefull with the high voltages. The flyback voltage is very high (20-30 Kilovolts !) and may be lethal !!

Jul 02, 2012 | Sony KP-57WV600 57" Rear Projection...

1 Answer

Black spot in the middle of the screen looks like it has a burned spot


Yes if it uses 3 picture tubes one is burnt dead center--cover the lens one at a time to see which is causing this--permanent damage caused by a arc.

If a newer set you have a display unit with a dead pixel.

Mar 31, 2012 | RCA Televison & Video

1 Answer

I have a hitachi 50vs69a with 2 yellow spots in the middle of the t.v when powerd on.....black when off. these spots almost resemble states...there is also blue splotches in the middle of these spots. any...


Yes, if the spots are round or teardrop it may be burnt picture tubes.

Easy to confirm this by covering lens of tubes one at a time with set on and see which removes the blotches.

What happened in a lot of these sets is the set arcs and burns a black dot dead center in one or all three of the screens of the picture tubes used--fatal case and permanent.

Mar 14, 2012 | Hitachi 50VS69 50" Projection HDTV

1 Answer

White screen divided in half with black line


Your ccd imager is defective . You need to replace the ccd imager .You need to contact the service center to get one for your camera .

Jan 30, 2009 | Kodak EasyShare Z700 Digital Camera

1 Answer

Picture only in middle of screen


Sounds like vertical problems on your circuit board. Unless you have some electronics experience you'd better take it in for repair.

The inside of a tube TV contains high voltages even when off and unplugged.

GL

Oct 04, 2008 | Toshiba 36A50 36" TV

1 Answer

Sony KP-65WV700 65


This may be nothing more than dirt, hair or dust on the picture tube magnifier glass ( you can clean this by opening the front and cleaning like you would a window glass) or it may be more serious like a high voltage divider control. I would suggest you try cleaning the tubes first and if it's not that, then seek qualified help. ( PS. Always unplug the set from the wall before working inside the set ).
I hope this has helped.
Happy President Day.
Ed
NC Electronics
Mills, Wyoming

Feb 18, 2008 | Sony KP-65WV700 65" Rear Projection HDTV

2 Answers

Tv has a big black in yhe middle,does that mean that the picture tube is going out


no that is not the sympton of picture tube failure. please give the details of your problem so we will get you solution.

Oct 07, 2007 | Philips Magnavox 27MS343S 27" TV

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