Answer

Hello !!

In that case this looks like a malfunctioning IC (chip) on the main board of your monitor.

Something is heating up the display IC and so it shuts down the display to save it from burning. Your monitor needs to be repaired and if not in warranty you should take it to local repair shops only. Dell will be too expensive.

In rare cases it can happen because of a loose / bad data cable that connects monitor to tower. Or even the motherboard of tower can have problem, but its rare.

So, the best way to go about it is to plug in another monitor (borrow from a friend) to your tower. If that monitor works fine, than you know that the motherboard is fine. And problem is either in the data cable or the monitor is bad. Then replace the cable to confirm the issue.

Feel free to ask any question or concern you may have. I will be glad to help you.

 

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