Xperia z Sudden shut down

[Pelucchiotto]

Hi, I have a Sony xperia Z (C6603). Since a couple of days when the phone battery goes below more or less the 90% it suddendly turn off. The top overheat, and battery goes down really quickly. If I turn it on back after a while it turns off again, decreasing the time it stays on, as well as the battery. When it goes below a certain percentage it doesn't menage to turn on anymore. Often when I tunr back on it start the "app optimization" (287 app) that last very long time.
Does someone know how I can fix this?

[MarlonUk1]

does this happen when you are on safe mode??

[Pelucchiotto]

Yes, it happens also in safe mode. I have also tried the "software reapair" with the PC Companion, that have totally rebooted my phone, but nothing

[MarlonUk1]

pc compaion isn't supported anymore,

try software repair using Xperia Companion

[Pelucchiotto]

Yes, sorry, I have used the Xperia companion to repair the software, not the PC companion (I got confused by the very similar name). 

[MarlonUk1]

unfortunately if you have already the steps mentioned, then softare problem can be ruled out. this might mean there is something wrong with the hardware, I suggest you to contact your local service center to have your phone checked Local support

[Saqib_mu]

Hi! I need some help.

I root my XPERIA Z C6603 and flash twrp recovery then I boot into recovery mode but nothing happens and my phone turn off. After I turn on my phone, it vibrates again and again while holding power button. I tried to keep on holding power button and volume down but nothing happened. Then I finally put it on charger but red light blinks again and again nothing happens.

Tell me as soon as possible what should I do.

Thanks in advance