H257HU smipdx after 20-30 minutes starts blinking on and off

dtadcox
dtadcox Member Posts: 1 New User
edited March 2023 in 2017 Archives

I use my H257HU as a secondary monitor for both an iMac and a Macbook pro laptop.  In both cases, after the monitor warms up a bit (20-30 minutes) the monitor will start blinking on and off.  It is not rebooting the monitor back to the spalsh screen, rather it just seems like it is having issues sync'ing.  So, the display will go from black to on and back again in quick fashion, like every 10 to 20 seconds.  Turning the monitor off and back on seems to rectify the issue, temporarily.  Should I look into getting some maintenance?  I know the quesiton of cabling will come up, but I don't believe that is the issue.  If the cabling is bad, why does it work, sometimes, for hours without issue?  Thanks for any help on this issue.