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)

Posted on Nov 29, 2018 5:09 AM

Reply
2 replies

Nov 30, 2018 1:48 PM in response to CharlieFrost

Hi CharlieFrost,


Thanks for using Apple Support Communities. It sounds like you’re having some screen issues on your Mac. I’m happy to provide some steps that may help. To start, I suggest resetting the SMC and NVRAM/PRAM on your Mac to see if the issue persists:


How to reset the System Management Controller (SMC) on your Mac - Apple Support


Reset NVRAM or PRAM on your Mac - Apple Support


Should that not resolve your issue, I’d suggest running diagnostics to help isolate:


How to use Apple Diagnostics on your Mac - Apple Support


Should the issue persist, you’ll want to contact Apple Support or visit your local Apple Authorized Service Provider or Apple Store for service.


Take care.

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27" iMac screen flicker/white screen

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