Question about Televison & Video
The lines you see on the screen are called retrace lines and are cause by the absence of 200VDC that power up sections of the CRT.
This type of repair might not be a DIY due to the number of measurements to pin point the defective part(s) and the high voltages around the circuitry. There could be a fuse resistor that is connected from the flyback transformer to the CRT that is open, if that is the case you could also have a video amplifier IC shorted.
Posted on Jul 07, 2008
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Posted on Jan 02, 2017
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