Cheap TV has weird vertical purple lines

Since my dad loves saving money, he buys very cheap products, but they break. I could not find sceptre tv on the list but that is what we got. Unlike many people having the problem with lines in the same spot on the tv, the lines that are on my TV only follow brighter light. On blue screen, there are no lines, but whenever the white letters”no signal” pop up, the lines cover that vertically up and down the screen but only on the words. I have taken apart the tv and reconnected the wires but that has not worked. PLEASE HELP!

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