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The backlight turns on but there’s no display when I turn on my Mac. The chime turns on and the keyboard lights come on. I can also connect it to an HDMI to my TV and I can see the display through there but still no display on my laptop. Maybe a lose cable? Any suggestions?
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Good news is that the Mac and graphic card are still working. Bad news is without parts at hand or logic board diagnostics abilities you won’t be able to do any further troubleshooting. I wouldn’t recommend anyone to buy such an expensive new screen assembly to “see if it works”. It might be the screen as well as a logic board issue. Try reseating the screen connector on the logic board, but if that doesn’t help you’ll need to find a technically reputable lab into component level repairs.
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Pulled my back (bottom) off and swapped memory and HD out with spares (actually the original) parts and still no change... Tried reseating the screen connector and it gave me back lighting but no screen... Tried it again and cleaned the contacts on the cable lightly and all is good now...
@James Hager It's always worth to try basic things first, good it worked out !
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First try a SMC-Reset - then an NVRAM-Reset
SMC - On the laptop's keyboard, hold down the Shift+Control+Option keys and the Power button at the same time. Release all keys and the power button at the same time – the little light on the MagSafe adapter may change colors briefly to indicate the SMC has reset. Boot your Mac as usual.
Resetting NVRAM
In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test and ask specifically for the VST (Video Systems Test)
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Thank you very much! Rebooted with shift,ctrol opt & power switch
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Did anything happen to it?
par mayer