No display but backlight is on

Question

MacBook Pro（13 英寸，配备 Retina 显示屏2015 年初期）

2015年3月更新的 13 英寸 MacBook Pro 配备 Retina 显示屏，型号为A1502，采用第五代英特尔酷睿 i5 和 i7 处理器，并配备 Force Touch触控板。

1185 个问题查看全部

Amberrena @arkersey1

声誉积分: 13

1

发帖于: 2019年2月21日

更多选项

No display but backlight is on

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?

已回答！ 显示答案我也有这个问题

这是一个好问题吗？

是否

得分 1

1条评论

Did anything happen to it?

由 mayer 完成的 2019年2月22日

添加一条评论

3个答案

已选择的解决方案

arbaman @arbaman

声誉积分: 102.6千

10

54

291

发帖于: 2019年2月22日

更多选项

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.

这个答案有帮助吗？

是否

得分 3

2条评论:

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...

由 James Hager 完成的 2019年11月21日

@James Hager It's always worth to try basic things first, good it worked out !

由 arbaman 完成的 2019年11月21日

添加一条评论

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
@James Hager It's always worth to try basic things first, good it worked out ! — arbaman

score 2 · Answer 1 · 2019-02-22T09:45:20-07:00

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

Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R.
Turn on your Mac.
Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.
Hold these keys until the computer restarts and you hear the startup sound for a second time.

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)