L192W display very blurry after a few hours of operations

I have a J115 with a L192W , GeForc6100 on board card.
I noticed recently that after a few hours of usage, the L192 screen becomes blurry where every icons, windows or text has a shadow.
If I turn off the power for a few minutes, the problem goes away for a while and then came back.
Anyone has similar experience?
THanks
Solved!
Go to Solution.

after a couple of months tinkering with different solutions, i happened to see my neighbor on his way to the PC-recycle place to recycle his 12 yo CRT monitor from Viewsonic . The monitor came with a old (but thick) VGA cord.
I asked if I can try that before he recycles it. That was the solution.
My guess is that the stock VGA cable that came with the monitor was not shielded properly and it picked up some interferences from some other electrical sources or something.
Anyway hope that helps someone else in the future
PS: I ended up recycling the new stock L192 VGA cable and use the 12 year old Viewsonic VGA cable instead.

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