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?
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?