27" iMac screen flicker/white screen
iMac (Retina 5k, 27" late 2015) - Mojave 10.14.1
Screen has started flickering. It gets worse, then goes blank white. Normal restart clears it initially, then the problem quite quickly starts over.
Help! - driving me mad!
Is it a hardware fault?
many thanks
Charlie
IMAC (RETINA 5K, 27-INCH, LATE 2015), macOS Mojave (10.14.1)