My monitor, 1704FPT1, will run normally for a bit, then "flare" a little, and quit. I can restart it, but only for a few seconds at a time. IF it's off for a while, it starts okay again, then the cycle repeats.
I would suspect a power supply or defective electronics in the unit. If it's still in warranty, call Dell support. If it's out of warranty unfortunately the best option is to look for a new monitor, considering the price of a new 17" monitor.
I am not a Dell Employee
Dell forum member since 2002
Home Built PC with ASUS Z170, i7 6700K CPU, Windows 10 64 bit Pro. SSD drive. Sonar Platinum Recordng Software.
Member of Nashville based R.O.P.E.