Hi Sleepist,
Welcome to Sony Community!
Sorry to hear that the issue worsen after you attempted to fix it. Kindly follow the steps provided in the link to troubleshoot the fan noise, https://us.en.kb.sony.com/app/answers/detail/a_id/35220 . If it still shuts down, here is the link that could help you troubleshoot it, https://us.en.kb.sony.com/app/answers/detail/a_id/32876 .
For further assistance regarding your concern, please contact the Sony offices/Sony representative offices nearest to your place of residence in Asia Pacific region http://www.sony-asia.com/countryselector.html?hpid=countryselector:AsiaPacific. Due to proximity, they are in a better position to respond to your questions or concerns.
Regards,
Jen
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