Sharp LC-32LB261U - Connecting a Cable or Satellite Box; DVI Connection with Audio

32″&42″&50″LCD TV Best Buy LC-32LB261U- LC-42LB261U- LC-50LB261U
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2. Can’t start
Can’t start（LED red）
Replace the main board
Replace the Power board
No
Yes
No
Yes
No
No
Power board output＝12,19.5V?
Check the power key is under control?
Check the IR receiver is normal?
Replace the power board
Replace the key board
Yes
Replace the IR board