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No video picture, no sound.
No video picture,
Check the cable if that is
used to connect TV and
DVD Player, is normal
Check
voltages from the power
board to the decoder board
are normal.
Check if the reset circuit consisting
ofC65 normal (at a low level for
tens
of
constantly at 3.3V).
Check if there is
27MHz
output in
Yes
Check
component of
output circuit.
Yes
Check U1 and Replace U1
no sound.
Yes
whether
all
the
Yes
milliseconds,
then
Yes
signal
if
the
vidio
4-10
No
Replace the cable
No
Check the power board
No
Change C65,R20,U1
Crystal oscillator X3 and
No
peripheral components
are defected or eroded.
No
Change the bad component
Trouble shooting chart
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