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6. Troubleshooting Flow Chart
These flow charts may not match every single defeat TV set, but they can give you
useful advices when you meet the same defeats described on the titles below.
6.1 Green Power LED does not turn on.
The TV is not work.
Check
Unit
Check
DIM, BL_ON.
Ok
Check the Main IC'
periphery circuits
and
between Main IC
and
signals.
Change Main IC.
Both
no
Check 3.3VSTB
and 12V/24V
Only
Power
3.3VSTB
Check
DC‐DC
outputs, and
P_ON,
the
supply of Main
IC and DDR.
No
the
hole
peripheral
Not work
Both have
has
Abnormal
each
unit's
power
Check Reset signal of Main IC
Normal
Check IIC bus signal. Try to cut off
Normal
Turner and AMP bus .Then start up.
Norm
al
Check Crystal
Check print information if necessary.
27
Check
each
DC‐DC
and
there terminal
voltage
regulator unit.
DDR.
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