xperia SL itself off

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http://forum.xda-developers.com – good Night I wanted to know how I can fix this in my terminal, it currently rooteado and Recovery, also has the jelly bean version .211. The phone turns on normally lasts no more than a minute and turns off, the first time I did this the screen lock, did nothing, then showed a message that due to temperature problems would go off, leave it a few minutes and turned and turned again but no message was extinguished, the only change made to the cel was the installation of ultra Z home this forum here and on XDA (which is the same) and each time data shown in the background off the screen and (HowTos)