Power Supply Section - LG 47LX9500 Service Manual

POWER SUPPLY SECTION

POWER SUPPLY SECTION
This switch mode power supply develops Stand By 3.5V
at all times when AC is applied.
At power on, it develops 12V and 24V for the Main board
And 24V for the Inverters.
This power supply draws less than 1 watt during stand by
mode. The fuse F500 reads 161V
(from hot ground) during this time. (F101 is 4.12V)
When the controller chip receives the PWR-ON command
3.3V via P201 Pin 1, the primary section increases its
current supplying ability. Both Primary fuses F101 and
F500 now read a little more than 391~2V.
P201 Connector: (To Main Board)
12V is routed out P201 pins 17, 19 and 21 and
24V is routed out P201 pins 2, 3 and 4.
P204 Connector: (To Inverter Main Board)
24V is routed out P204 pins 1 through 5.
P205 Connector: (To Inverter Secondary Board)
24V is routed out P205 pins 1 through 5.
September LCD TV 47LX9500
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