tv switching on and off , white horizontal line

Hi every , can you assist on what could be the problem , i was cleaning my tv the other day and forgot to wipe out some liquid on the screen im sure it found its way down the front panel and after a few minutes , tv screen went blank, i switched the tv off and back on but a white horizontal line appeared which turns into a brown line which quickly fades away, tv then switches off and on again with the issue stated above , no images just continuous switching on and off with the horizontal line

samsung series 7 uhd tv model number UA55KU7350

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