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Black line shows horizontal black line when scanning

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TCL CRT TV just shows a black screen but sound is ok! ANy idea what could be the problem! please assist to solve this probelm as i don't want to loose my old TV!


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/ Type in this key phrase " my service table today " in the search box at the top right of the the home page, to get gathered some pages which has the details of practical experiences of the author of that site.

Nov 01, 2016 | Televison & Video

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TV shows either: black screen with: white vertical or, horizontal line


If Your screen shows a: white vertical line on a black screen or, a white horizontal line on a black screen:
Your TV vertical or, horizontal power transistor or, chip is getting too hot.
A vertical line indicates the horizontal circuit is at fault, a horizontal line indicates the vertical circuit is at fault.
To troubleshoot: Turn on your TV untill the line shows then: after about a minute, remove power (unplug) the TV, remove the TV back cover, find the too hot transistor or, chip; using component coolant; spray the too hot component with the component cooler until the screen comes back to normal. To fix: apply white coolant cream to the back of the too hot transistor or, chip. or, if there is room, a small fan can be wired in to cool the part. Radioshack sells the cream and, also a "component cooler spray" that should find and, fix this problem, also; with power removed you can, if you feel it is safe; carefully (with only one hand) feel the part; it will be very hot! (it could burn your finger!) Do not touch anything else! (this will not hurt the tv; when the picture comes back on (the offending part has cooled) you have found the problem part.

on Apr 06, 2010 | Televison & Video

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My Telefunken TV model 215 doesn't show but it makes sounds normally as it is playing but the screen is black...it doesn't show...whats seems to be the problem...please help


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window, to get gathered some pages which has the details of practical experiences to the author of that site.

Oct 01, 2015 | Televison & Video

1 Answer

Black screen with high pitch sound?


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

Mar 11, 2015 | Televison & Video

1 Answer

Black horizontal stripes


Black horizontal lines ( page is held Portrait ) ,
where print is affected the print image fails to show behind Line effect but shows in between-
the drum surface has been damaged ( likely wear and tear) and can no longer maintain an even layer of electrons due to leakage/short
solution:
replace the toner cartridge which houses the drum.

Mar 16, 2014 | HP LaserJet 2300 Printer

1 Answer

Black line running horizontally across TV screen


A line on an LCD, either horizontal or vertical usually means the video driver board is defective or the screen is defective, does it show up as black even on a dark screen? That means a line of LCD "shutter"s is not working and there is a problem that cant be fixed by a reboot or channel change. Bummer.

Feb 17, 2008 | Televison & Video

1 Answer

Black horizontal lines


Sounds as if you have a bad capacitor in the horizontal deflection or video circuitry. You can spot a bad capacitor in circuit with a ESR meter.Hope this helps.

Jan 16, 2008 | Mitsubishi TS-5545 55" Rear Projection...

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