Hardware Diagnosis guide for mac
I want to fix my Mac by myself
My screen is black so I can’t do the hardware giagnosis
Is there any guide to hardware diagnosis?
모델 A1419 / Late 2013 / 3.2 & 3.4 GHz Core i5 또는 3.5 GHz Core i7 프로세서, ID iMac14,2
If your computer starts/bongs but there is no image at all it is likely to be the GPU (Graphic Processing Unit). This is a common fault on this model. If this is the case only an expert would be able to put it right. i.e. half the cost of a new one to put right.
I take it you have reset the NVRAM/PRAM?
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