Was using a BenQ GW280T monitor, which I had bought 10 years back around December of 2011. AT the time of writing it is almost 10 years for it. The monitor had been working flawlessly till last month., when it suddenly started taking around 2-3 minutes to show the display. The main power button’s light will flicker on and off till then. 2-3 minutes continued for the next 10 days or so and then then the duration increased to and then approximately around 10 minutes for some 15-20 days.
However, right now, it has started taking around 4-5 hours, directly from 10 minutes.
https://www.techspot.com/community/topics/monitor-taking-minutes-to-start-is-it-dying-fixable.205974/
Took it to the nearest repair shop, who mentioned that the issue was because of the failure of the capacitor. The repair took 1000 rupees (approx 14 USD) and the Monitor was up and running again. So if you are also facing the similar issue, better get it repaired instead of buying a new one.
Hope it helps..
Nishant Rana's Weblog 
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