How to fix no image/black screen issue in Sony Xperia Z3

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How to fix no image/black screen issue in Sony Xperia Z3: crwdns2935265:00crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

How to fix no image/black screen issue in Sony Xperia Z3: crwdns2935265:00crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

How to fix no image/black screen issue in Sony Xperia Z3: crwdns2935265:00crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

Apply solder to each of the three sets of four pins now exposed on the logic board.
After each solder, apply a small amount of flux to the new connection to clean the connection.
Be sure to wait at least 30 seconds after applying the flux so that it can clean and remove impurities.

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