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Hot to troubleshoot a TV - AB Soft Computers & Internet

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You could start of at this link:

This is a somewhat older link I ve been using, with a lot of technical in- depth info and instructions:

Posted on Sep 26, 2009


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Posted on Jan 02, 2017


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Why would it get hot once coex cable hooked up and scanning for channels? tv gets hot and shuts off.

I would check that there is not a problem with the power supply to the set. If it gets hot and shuts of the power may be faulty and could be causing component failure.

Jun 05, 2015 | TCL LE48FHDF3310 48" LED TV 1920x1080, 120...


If Your screen shows a: white vertical line on a black screen or, a white...

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, carefully using your finger find the too hot transistor or, chip; or, use component coolant; spray the too hot component with a component cooler repower the TV, until the screen comes back to normal. To fix: apply white sylicone 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 | Garden

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The back of the tv gets hot

It is OK. This is not a fault. Heat will be generated when an LCD TV works. This is common for all brands. It is not a fault.

Aug 12, 2012 | Insignia NS-L32Q-10A 32 in. HD-Ready LCD...

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My tv gets hot and it makes my room hot

Just check your TV by any service technician. If it overheats, there should be some thing seriously wrong with its internal circuit. Never switch it ON, unit the fault has been rectifed.

Jun 14, 2012 | Televison & Video

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Degauss sharp tv

If your TV needs degaused. You can leave your TV unpluged for about 30Mins, and the built in degausing circuit should work and clear the problem up. Sometimes the built in degausing will not work correctly when hot, because of the thermisitor is to high in resistance when hot.

Apr 10, 2012 | Sharp 27F543 TV

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My tv clicks on then off repeatedly. The back of the tv on the right side was very hot. Is this something i can fix myself?

Hot,so the tv work,before this happen?Or the tv sit near a heater or hot wheather near a window?The problems u discribing,probally the power supply board is dead.That the board,where the power a/c cord plug into it.Tries websites like, to buy a refurbish power supply board for the replacement.

Aug 11, 2010 | Televison & Video

1 Answer

Smells like it is hot or something is burning after changing bulb

Your tv is actually an Air eater. The tv itself needs a complete river of air (it looks as an exageretion) not really. I create this picture in your mind to help you to imagine all care you tv needs.

  1. Turn off the set. allow 20 minutes to cool down the set
  2. move the tv to the front and get access to the back of the tv then with a vacuum cleaner gets all dust out around the set
  3. make sure the air filter (refer to the manual) is clean.
  4. try to make sure the places were the air flows into the tv are clean and free of obstructions (back cover).
  5. finally all you can do outside the tv is done. Then when the tv is back its position make sure it "breathes" confortable. You tv has 3 fans inside (there is not a casualty)
The fresh air that goes into the system gets finally out really hot and smelly but as soon as the air flows thats normal for this tv. this is noticiable specially in hot seasons.

Apr 10, 2009 | Mitsubishi Diamond WD-65831 65" Projection...

1 Answer

Sony tv kv t25 the flybeck transistor gets very hot

replace the hot and the flyback and dvr601 602 and 603 make shure your yousing heat sink on the hot.

Jan 08, 2009 | Televison & Video

1 Answer

Flat tv is hot when used

What do you mean? Excessively hot or hot. The televisions tend to run warm, but if it is too warm usually there will be malfunctioning, check your cooling vents to make sure they are not filled with lint, and listen to the fans run through the cooling ports. If you do not hear a fan and you think your TV is too hot most likley it is the fan, if the fan is on and the vents are clean. The TV is probally at its normal operating temp.

Oct 16, 2008 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

1 Answer

Sharp tv problems

maybe you are a technician you will open your tv set thats why you know that the resistor geting hot. can you figure out witch resistor get hot? The value and wattage. Or tell me the no./color coding.More info.

Apr 10, 2008 | Televison & Video

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