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2. Can't start
Can't start（LED Blue）
No
main board+power board output
Replace the main board+power board
＝12V/24V?
Yes
Yes
Replace the main board+power board
Check the power key is under control?
No
Yes
Replace the IR board
Check the IR receiver is normal?
No
Replace the main board+power board
No
Replace the main board+power board
27
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