Dead phone, red charging light & start up screen loop after dropping it - Sony Xperia XZ Questions & Answers

After dropping my XZ on a table, it just went completly dead. The device switched off and wouldn't start again. So I tried to charge it, and hoped for the best, but when I connect it to a charger something strange occurs. The small red charging light comes on, and the black "SONY" text on a white background shows for a few seconds, then the device shuts off and the red light disappears. And from there on it just loops from black screen to red light -> sony logo -> black screen no red light -> red light -> sony logo -> black screen no red light and so on.
I've tried 2 different chargers (for several hours), tried starting it holding vol up and also starting it holding vol down. Tried connecting it to a computer with the xperia companion software, but it doesn't show any signs of connection. The SD card is removed.
I assume it has to be some kind of hardware issue (relating to the drop, yes i was drunk). But does anybody have experience from this problem and might advise what part is broken?

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do the 20second reset. this simulates a battery pull.
i dropped my Z3 too, no damage at all, but it doesn't work at all anymore. No red lights nothing.
aaapje15 said:
do the 20second reset. this simulates a battery pull.
i dropped my Z3 too, no damage at all, but it doesn't work at all anymore. No red lights nothing.
Click to expand...
Click to collapse
already tried, nothing ...

Is it bricked or just battery

So the Xperia z3 will not start and it seems that it doesn`t charge, furhther it wont turn on.
Tried VOL+\- + Power button and the little button behind the SIM-Cover - no reaction
When I connect it with a (working) charging unit the LED will light up red and the display shows a battery-symbol filled red on the bottom (10%)for a few seconds, then it turns off and shows the same things (led and screeen). Well it is some kind of loop. I charged it for over 24 hours with different charging devices (up to >2A)
When I connect it to a PC the LED is dark blue. PC Companion says that the phone is locked and I schould unlock it, which is impossible as I am not able to turn the device on
Connecting it to the PC while holding the VOl- the PC Companion can do a software-repair and it says it works, but it doesn`t change the behavior of the phone.
I once got hands on an old Z3 wich showed the same behavior, it was just the battery. I changed the battery and it is now working fine again.
lordborken said:
So the Xperia z3 will not start and it seems that it doesn`t charge, furhther it wont turn on.
Tried VOL+\- + Power button and the little button behind the SIM-Cover - no reaction
When I connect it with a (working) charging unit the LED will light up red and the display shows a battery-symbol filled red on the bottom (10%)for a few seconds, then it turns off and shows the same things (led and screeen). Well it is some kind of loop. I charged it for over 24 hours with different charging devices (up to >2A)
When I connect it to a PC the LED is dark blue. PC Companion says that the phone is locked and I schould unlock it, which is impossible as I am not able to turn the device on
Connecting it to the PC while holding the VOl- the PC Companion can do a software-repair and it says it works, but it doesn`t change the behavior of the phone.
Click to expand...
Click to collapse
Mine Z3 Dual also have the same issue.. Replaced with new Battery.. Now it's working fine..
Yes, lt is the battery. The Signals are as If there is no battery connected (removed the battery to check) . Replaced it and it works

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When I connect it to the charger it glows red green green and repeats for 2 times after. If I connect it to the PC and turn it on, the PC makes a connected device sound but still it doesn't turn on. Anyone here knows what it is? Is it bricked?
No clue and found little on a Google search.
If you can easily disconnect the battery, try that.
Better if you can command it to do a hard reboot.
A hard reboot can sometimes resolve issues.
May be a hardware failure.

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