Question weird issue with my monitor

amirtondari

Honorable
Mar 9, 2016
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hey guys i have a little problem with my monitor here, its an old samsung syncmaster px23720 plus, problem is when i use hdmi port to connect my pc or any other device like ps4 or laptop to it sometimes screen tears and flickering horizontal lines appear in certain scenes of a movie or game but when i use other ports (like dvi) its fine i tried with different cables and devices same problem so im pretty sure its the monitor that is faulty any idea what is wrong or how to fix it?

here is some pictures and a video

Imgur: The magic of the Internet
 
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