A line appearing on the screen
White line appearing on the screen
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Without knowing what CRT you have, it's usually the flyback transformer going bad and needing to be replaced. You can do this somewhat easily if the TV was popular or generic enough to find a new flyback, but most CRTs except for the Trinitrons were generic Funai sets and usually end up scrapped when this occurs unless you can find a good flyback and do the adjustments to get the image right. It could just be bad caps, so I would check those over as well before looking for a new flyback transformer.
The other common cause is the vertical output IC but most sets fail due to caps or the flyback.
This job is a bit risky being it involves 25k+ volts as the CRT itself is a big capacitor, but it can be done. This wiki has instructions on how to do the discharge needed to change the flyback: Safely discharging CRT monitors
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Hi @nick78780
What is the make and model number of the TV?
Is the white line on the screen a vertical line or a horizontal line?
jayeff さんによる
It open and close continue there is no any type of pictures show and no any sound
Kanchan Chaudhari さんによる