[Q] Shows Nothing

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My Play won't show anything on the screen since yesterday. I think its battery had died but even after I charged it and still I wouldn't even get to the bootup screen when I tried to switch it on.
I flashed backed to stock firmware, and still wouldn't show ANYTHING on the screen.
I've tried to relock the bootloader so I can still use the warranty, but I'm not sure whether it worked really, because usb debugging was off.
I've never had ANY problems with either battery, flex cable or even overclocked too much.
So I'm begging for suggestions or at least a confirmation that my bootloader has been relocked, because then I could send it to sony.
The log from flashtool when I tried to relock is this:

25/005/2012 11:05:42 - INFO - Device connected in flash mode
25/005/2012 11:05:42 - INFO - Opening device for R/W
25/005/2012 11:05:43 - INFO - Reading device information
25/005/2012 11:05:43 - INFO - Phone ready for flashmode operations.
25/005/2012 11:05:43 - INFO - Start Flashing
25/005/2012 11:05:43 - INFO - Processing loader
25/005/2012 11:05:43 - INFO - Checking header
25/005/2012 11:05:43 - INFO - Flashing data
25/005/2012 11:05:45 - INFO - Loader : S1_Loader_Root_773f - Version : R4A066 / Bootloader status : ROOTABLE
25/005/2012 11:05:45 - INFO - Flashing preset.ta
25/005/2012 11:05:45 - INFO - Writing TA unit : [00, 00, 08, B2, 00, 00, 00, 02, 00, 00]
25/005/2012 11:05:45 - INFO - Ending flash session
25/005/2012 11:05:45 - INFO - Flashing finished.
25/005/2012 11:05:45 - INFO - Please unplug and start your phone
25/005/2012 11:05:45 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

Update: I tried to flash doomkernel, but Command Prompt said my device isn't rooted, so I guess my bootloader is now relocked.

Update: Took it to my carrier and they charged it for a day and it switched on. They said sometimes smart phones don't switch on for multiple reasons.

Originally Posted by yxxact

My Play won't show anything on the screen since yesterday. I think its battery had died but even after I charged it and still I wouldn't even get to the bootup screen when I tried to switch it on.
I flashed backed to stock firmware, and still wouldn't show ANYTHING on the screen.
I've tried to relock the bootloader so I can still use the warranty, but I'm not sure whether it worked really, because usb debugging was off.
I've never had ANY problems with either battery, flex cable or even overclocked too much.
So I'm begging for suggestions or at least a confirmation that my bootloader has been relocked, because then I could send it to sony.
The log from flashtool when I tried to relock is this:

25/005/2012 11:05:42 - INFO - Device connected in flash mode
25/005/2012 11:05:42 - INFO - Opening device for R/W
25/005/2012 11:05:43 - INFO - Reading device information
25/005/2012 11:05:43 - INFO - Phone ready for flashmode operations.
25/005/2012 11:05:43 - INFO - Start Flashing
25/005/2012 11:05:43 - INFO - Processing loader
25/005/2012 11:05:43 - INFO - Checking header
25/005/2012 11:05:43 - INFO - Flashing data
25/005/2012 11:05:45 - INFO - Loader : S1_Loader_Root_773f - Version : R4A066 / Bootloader status : ROOTABLE
25/005/2012 11:05:45 - INFO - Flashing preset.ta
25/005/2012 11:05:45 - INFO - Writing TA unit : [00, 00, 08, B2, 00, 00, 00, 02, 00, 00]
25/005/2012 11:05:45 - INFO - Ending flash session
25/005/2012 11:05:45 - INFO - Flashing finished.
25/005/2012 11:05:45 - INFO - Please unplug and start your phone
25/005/2012 11:05:45 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

That's odd, I would buy a new battery before sending it in to be repaired. If you're in a contract you can call your carrier and have them send you a new battery. Verizon sent me a 9 foot USB cable, new battery & battery cover.....for free, because my phone was power cycling.
Long story short I got a new working phone and kept all the free stuff they sent me.

Originally Posted by Xperia Player

That's odd, I would buy a new battery before sending it in to be repaired. If you're in a contract you can call your carrier and have them send you a new battery. Verizon sent me a 9 foot USB cable, new battery & battery cover.....for free, because my phone was power cycling.
Long story short I got a new working phone and kept all the free stuff they sent me.

Unfortunately, European Carriers aren't that nice. What's power cycling? And my battery life was great, why would it suddenly die after not even a year of use?

Originally Posted by yxxact

Unfortunately, European Carriers aren't that nice. What's power cycling? And my battery life was great, why would it suddenly die after not even a year of use?

Self explanatory, turns on & off randomly. Could be faulty battery, could be a lot of things. I'd get a new battery first to go ahead and rule that out if it's still giving you trouble.