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LC-42SV50U/ LC-46SV50U
Are the power cord and harness in the
unit
If F101 and F102 normal?
Does BD101 output 169V when
AC input 120V?
Is the voltage of +5V applied to pin
6,7 ,8 of CN204?
Are 12V and +24V output as for
power on/off switch when is on?
Power unit operation check
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Power cord and harness in the unit
connected
Line filter unit? LX101 ,LX102 or
RT101 is out of order?
Change a new full-wave rectifier
diode to check the output voltage.
Does the standby circuit normal?.
(TS101DL106,DL107 , the circuit
around the US101 and protection
circuit ect. is checked)
Does the LLC circuit normal?
Check primary side(TL102,QL101,QL102)
And Second
side(DL109,DL110,DL106)And the
protection circuit.
55
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