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MONITOR MANUFACTURING MYSTERY

Need -a- Clue
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Last Modified: 2017-04-22
Large manufacturers that make monitors seldom make a huge mistake in manufacturing. And if they did they would correct it asap especially in an item that sells well and that they intend to continue to manufacture. The mystery: I have two brand new Dell 25" Ultra monitors model U2515H. Both of them exhibit what I and many others feel is unexpected behavior of the on/off switch. The switch is a capacitance type touch switch. Often the switch will not turn the monitor on. Often times when the monitor is working apparently fine the switch will not turn it off. This MAY be some type of "feature" that many, including me, do not understand. The monitor has been out for at least one year. I confirmed with Dell that their own monitors with the exact same model number behave the same as mine. When googling the model and "on/off" switch the hits are many describing the same actions.

Does any Expert know FOR SURE what the reason behind this seemingly odd behavior is? There are many opinions given on the net, but most of them have later posts in the thread that indicate that they were incorrect. Note: I have a strong suspicion that the actual manufacturer of this item is Samsung.

Why do these monitors behave this way?
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JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
Most manufacturers use Mean Time to Failure as a way to predict failure rates (and hence warranty accrual requirements).

Then, any one failure is the luck of the draw and often happens early in the life of the part due to a weak section (just happens).

Then, what you are describing is a potential engineering / manufacturing design failure. Once a manufacturer sees the results, they change the design and manufacture process. Then they have to fix recalls on a warranty basis. This happens as well, although hopeful not too much.
Need -a- ClueRESEARCHER

Author

Commented:
They did offer me two replacement monitors, but for the  time  being I  declined since their Pro Tech support group has some of the same monitors with the same problem. Plus, they have no  clue as to why they are behaving this way and continue to receive newlxy manufactured displays that show the same trouble. At least they could describe their  line  of thinking  IF it is intentional for some reason.
Business Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018
Commented:
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JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
I am just watching EEV Blog, First Video today, and HP is replacing a bunch of Digital Meters to fix an interference problem. This is analogous to your issue and HP is just replacing the units.
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
Thanks and I was happy to help. Good luck with the monitors.
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