This could be an issue with your monitors motherboard. If you are familiar on how to open your monitor. Look for powersupply capacitors. Check visually if ok and replaced if if needed. Also fuse that maybe blown is not glass fuse near main socket,It is semiconductor black or yellow colour labeled PFxxx near heatsinks of power supply secondary. If you are not aware of this capacitors, i suggest you bring your monitor to the nearest repair shop for this required expertise in fixing this issue.
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This could be an issue with your monitors motherboard. If you are familiar on how to open your monitor. Look for powersupply capacitors. Check visually if ok and replaced if if needed. Also fuse that maybe blown is not glass fuse near main socket,It is semiconductor black or yellow colour labeled PFxxx near heatsinks of power supply secondary.
If you are not aware of this capacitors, i suggest you bring your monitor to the nearest repair shop for this required expertise in fixing this issue.