How can I repair my TV myself?

SONY Bravia LCD TV brought 2010 from Dubai. Sri Lanka Its not working even 1 day. pls how can it repair?

I bought in 2010. I try to use it 2014. cant on this TV. I got help from Technicians. they told power supply unit fully damaged by sea wind. pls help me to solve this problem--Thanks
Answer:

hello if it is not used for a long time.....the terminals got rust.....so UNPLUG TV...remove back cover...clean terminals with a contact cleaner...wait 24 hours...then plug it.. tv terminals tv terminals http://4.bp.blogspot.com/_hjziXBYjxgA/TK8vPdMAXRI/AAAAAAAAAqk/IZ7-Q7TN1sk/s1600/Molex+wire_to_board.jp contact cleaner http://www.vicky.in/shopping/image/cache/data/car-care-products/ecc-500x500.jpg disconnect terminals...spray on prongs and holes...

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