55
LC-42SV50U/ LC-46SV50U
Power unit operation check
YES
Power cord and harness in the unit
connected
Line filter unit? LX101 ,LX102 or
RT101 is out of order?
YES
Are the power cord and harness in the
unit
NO
YES
YES
YES
If F101 and F102 normal?
Does BD101 output 169V when
AC input 120V?
NO
Change a new full-wave rectifier
diode to check the output voltage.
Is the voltage of +5V applied to pin
6,7 ,8 of CN204?
Does the standby circuit normal?.
(TS101DL106,DL107 , the circuit
around the US101 and protection
circuit ect. is checked)
Are 12V and +24V output as for
power on/off switch when is on?
Does the LLC circuit normal?
Check primary side(TL102,QL101,QL102)
And Second
side(DL109,DL110,DL106)And the
protection circuit.
NO
NO
NO
Summary of Contents for LC-32SV40U
Page 1: ...SERVICE MANUAL LCD COLOR TELEVISION MODEL LC 32SV40U LC 42SV50U LC 46SV50U ...
Page 3: ...2 ...
Page 4: ...3 ...
Page 9: ...8 LC 46SV50U ...
Page 13: ...12 Fig 8 1 Remove the 4 screws and disconnect 4 cables Detach the Main board ASSY as Fig 9 ...
Page 14: ...13 Fig 9 2 Remove the 5screws and 2 Cables Detach the Power board as Fig 10 ...
Page 15: ...14 Fig 10 3 Detach the IR board as Fig 11 Fig 11 ...
Page 29: ...28 Fig 10 2 Remove the 6screws and 2 Cables Detach the Power board as Fig 11 Fig 11 ...
Page 32: ...31 Fig 17 4 Remove the 2 screws at the upside of panel as Fig 18 Fig 18 ...
Page 63: ...62 3 WIRING DIAGRAM LC 32SV40U LC 42SV50U ...
Page 64: ...63 LC 46SV50U ...
Page 66: ...65 BOTTOM ...
Page 80: ...79 Fig 4 Fig 5 ...
Page 84: ...83 Fig 4 ...
Page 85: ...84 Fig 5 ...
Page 97: ...96 2 CABINET PARTS LC 32SV40U CABINET PARTS ...
Page 99: ...98 LC 42SV50U CABINET PARTS ...
Page 101: ...100 LC 46SV50U CABINET PARTS ...
Page 104: ...103 4 PACKING PARTS PACKING PARTS LC 32SV40U ...
Page 106: ...105 LC 42SV50U PACKING PARTS ...
Page 108: ...107 LC 46SV50U PACKING PARTS ...