| more info of the same problem
I have the same problem.
Flashtool, custom kernels, different stock and custom ROMs... doesnt solve it.
I've seen schematic pictures which fuse to jump or what to clean, but the difference is mine has backlight, and after some time the phone will start normal (with screen good and usable). I can work weeks on it without going to deep_sleep (power button). Also I don't have equipment to rehot ic, check fuse and no technical knowledge for hardware.
I took a lot of dmesg and logcats and i can see errors in kernel but one unusual line that caught my eye is: <simple_remote_pf simple_remote_pf.0: simple_remote_pf_button_handler - Button callback not registered> when starting xperia ray and when pressed power button while its on.
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