Apple Mac pro 13" A1502 820- 3476-A No video.

[Sergio Kub]

No Video but Back light and fan ok
Some tips ?

[Stephen]

Re: Apple Mac pro 13" A1502 820- 3476-A No video.

If you have a backlight but no video I would suggest checking the pins on the LVDS connection. Possible LVDS replacement will solve this issue. It’s actually common for me to see this issue in A1502.

[Stephen]

Re: Apple Mac pro 13" A1502 820- 3476-A No video.

Also have you plugged up the hdmi connection. To an external monitor to verify your GPU is working? Always trouble shoot with these steps before resorting to soldering.

[Stephen]

Re: Apple Mac pro 13" A1502 820- 3476-A No video.

And another suggestion is replaced the LVDS cable as well. Try another one you know is working!

[mon2]

Re: Apple Mac pro 13" A1502 820- 3476-A No video.

What is the history of this laptop? Any liquid damage ?

Does it chime on power up ?

Try PRAM reset.

Does the keycaps lock led work / toggle during keypress?

[Sergio Kub]

Re: Apple Mac pro 13" A1502 820- 3476-A No video.

I already tested another display and it didn't work.
I will test external monitor on HDMI.
Customer did not report contamination with liquid.
Mac with marks that took mechanical shock, fall ..

[Sergio Kub]

Re: Apple Mac pro 13" A1502 820- 3476-A No video.

The key lock LED does not work / does not switch during key press, it is always off

[Sergio Kub]

Re: Apple Mac pro 13" A1502 820- 3476-A No video.

Resolved
I did the Reset PRAM and the video came.
I will send the quote to the client.
Computer already functioning ... if the customer does not accept ...
Thank you very much to everyone who collaborated.