Abnormal color of video picture
Trouble shooting chart
Abnormal color of
video picture
Yes
Check whether the 27MHz output signal normal.
Yes
Check whether the 3.3V and 1.2V power supply voltages on the decoder board are normal.
Yes
Check whether the video filter network circuit is normal.
Yes
Check if the video signals on Pin 100,102,103,104, of U1 are normal
No | Check Y2, R12,R34,R16,C10 and |
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| C11 |
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No
Check other of power supply electric circuit
No
Correct the connection
No
change U1