Sharp LC-60LE450U/LC-60LE452U Service manual 
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3.3 Disassembly the Power, Main, 120Hz board, board support and I/O terminal bracket. 
  Step 1 Remove 8 pcs lock screws ① and detach the power board assembly ② 
  Step 2 Remove 4 pcs lock screws ③ and detach the 120Hz board ④ 
  Step 3 Remove 4 pcs lock screws ⑤, 2 pcs lock screws ⑥ and detach the main board ⑦ 
  Step 4 Remove 4 pcs lock screws ⑧ and detach the main board support ⑨ 
  Step 5 Remove 2 pcs lock screws ⑩ and detach the I/O terminal bracket 
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  The detail screws and parts sign as following picture3.3 
 
 
                                                                        Picture 3.3 
3.4 Harness picture