Question about Televison & Video
I have a sharp tv and almost everyday for the past week my tv will just close while im watching something and it wont turn on unless i pull out the electrical plug from behind and that to if i leave it out for about hour if i push the plug back in after 2 minutes the tv starts for around 5 seconds and then closes again can you plz give me a way where i can stop this from happening??
TV's use high voltage to generate the stream of electrons traveling
across the picture tube hitting the screen and lighting it up (thus the
name Cathode Ray Tube). It takes about 25,000 volts to do
this. In normal air, it takes about 1000 volts to jump an inch of
air, so the high voltage transformer needs to have good
insulation. It generates the voltage through a technique of
charging the transformer's magnetic field with a low voltage of about
140 volts then letting it go where upon it flys back out the high
voltage side at much high levels (Thus the common name
flyback). A most common failure in a CRT type TV is for the
insulation to crack in this transformer which is a unique component for
each model of TV and leak out the current overstressing the circuit
driving it. You can liken it to a little bolt of lightning
getting loose in the circuit and has the same sound on a smaller scale.
It would be well to replace your flyback transformer before it gets worse and blows up something else as well. Best done by a professional used to handling high voltage. The picture tube can retain voltage even when the TV is unplugged for some time, and replacing the anode lead (the big red one) can be dangerous.
Hope Ya Fix It!
Posted on Feb 20, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jul 15, 2011 | Televison & Video
Jan 06, 2011 | Sharp 36F-830 36" TV
Jan 28, 2009 | Sylvania 6427TE 27" TV
Mar 31, 2008 | Televison & Video
Feb 26, 2007 | Sharp 27C241 TV
Feb 20, 2017 | Samsung Televison & Video
86 people viewed this question
Usually answered in minutes!