Tag Archive : macbook air turns on but no display backlight repair

Macbook Air A1466 turns on but no display backlight repair

Macbook Air A1466 turns on but no display backlight repair

Macbook Air A1466 turns on but no display backlight repair hamilton new zealand

Macbook turns on, you can hear a sound but no display. This is a common issue in Macbook from year 2013 to 2017.  What’s wrong with it? It’s starting up but no display.

When you hardly see apple logo when you start your macbook then most problably it is backlight issue. Plug in your charger, you can see adapter sense is working which is green and you can hear a sound & fan is spinning that means there is nothing wrong with SMC chip but no display which means it’s a backlight problem.

Watch our full youtube video on macbook A1466 backlight repair here

 

How we will diagnose the problem?

Firstly, we will check the backlight fuse. Let’s put the multi-meter in continuity mode and check the backlight fuse. If backlight fuse is fine then check the other capacitors near the backlight. If the capacitors near the backlight is all good. Then, check the lcd connectors. If you see a red trigger i.e. macbook is liquid damage.

You can watch some more information on same kind of repair here 

Find our another blog on macbook repair here

Macbook a1466 turns on but no display backlight repair at applefix hamilton new zealand

After that we have to check the lines. Firstly, we would like to check the J8300 lcd fcp connector, check the two backlight terminals which are SOSW_LCDBKLT. Before that we have to turn on macbook and check with multi-meter and we are getting 1.9V which is way lower than what we should get on backlight. Backlight won’t turn on 1.9V. We are not getting enough power that’s why macbook Air A1466 turns on but no display backlight repair

Backlight is directly connected to (U7701). We can clearly see the board is moisture damage.

We can clearly see the moisture damage and burnt part near the backlight ic. So next thing what we should do is to heat the backlight ic and remove it and put the new backlight ic.

Macbook logicboard repair specialist in hamilton New Zealand

These types of repairs involves micro soldering skills. Once backlight ic is taken out. We have to clean the pads using lot of flux with flat tip soldering iron. Cleaning of the pads is important before putting the new backlight ic. Set the temperature and put the new backlight ic. After replacing the ic, we got the display on macbook A1466.

If you are interesting in learning these sorts of repair or if you have macbook which have no display you can contact us.

Get your macbook fixed by professionals at applefix call now 078394188 for free quote 125 ward street hamilton


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