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The power can not be on or off
The power can't be
on or off
Go
Check the power supply
on the power board
to decoder board is normal.
Yes
Check if the CON2 on the front
board to J 6(7PIN) on the decoder board
is in good contact.
Yes
Whether the connection
to Standby Board is broken.
Yes
Whether there is 0V or
3.3V voltage difference on
Pin41 of U2
Yes
5-2
No
and the connection to
No
Yes
Replace the power board
or correct the connection
Check/Correct connection
No
Correct the connection
No
Replace U1.
Trouble shooting chart
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