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Abnormal color of video picture
Abnormal color of
Check whether the 27MHz
output signal is normal.
Check whether the 3.3V
and 1.8V power supply
voltages on the decoder
board are normal.
Check whether the
video filter network
circuit is normal.
5-6
video picture
Yes
Yes
Yes
Yes
Change U2
No
Check Y1, R17, C21 and C22
No
Check other of power supply electric
circuit
No
Correct the connection
Trouble shooting chart
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