Question about GE 31GT720 31" TV
The reason there is no picture is (95%, certainty) the loss of the high voltage. The high voltage is what produces the energy for the raster lines upon which the video is modulated.
Therefore, the video and deflection circuits may be working just fine but you cannot see because there is no high voltage to the picture tube.
Now, it is possible, also that power to the projection tube filaments has been lost, or that the power supply to the biasing voltages is defective or that the picture tube sockets are corroded, but the overwhelming cause among TV sets is loss of high voltage.
Refurbishing the high voltage will probably cost $250 or from anywhere you go. Even if you do it yourself and buy the parts wholesale you will not save a tremendous amount. So, unless you are very handy and know how to troubleshoot, solder, repair and test, I think you are better off finding a good shop for the repair.
Good luck and have a great day!
Posted on Feb 07, 2010
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Posted on Jan 02, 2017
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