Power Supply Section - LG 32LD350 Troubleshooting 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 all times when AC is applied.
At power on, it develops 12V and 24V for the Main board
And 24V for the Ballast.
This power supply draws less than 1 watt during stand by p pp y
mode. The fuse F501 reads 0V (from hot ground) during
this time.
When the controller chip receives the POWER-ON
command 3.28V via P201 Pin 1, the primary section turns command 3 28V via P201 Pin 1 the primary section turns
on. The Primary fuse F501 now reads 388V.
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.
P203 Connector: (To the Ballast)
24V is routed out P204 pins 1 through 5.
Other SMPS Used in the 32LD350:
32LD350 AUSWLJR or AUSDLFR or AUSDLUR or AUSDLJR
32LD350 CUSWLH or CUSDLH or CUSWLHO
EAY60868901
EAY60869101 EAY60869101
g y
32
November LCD TV 32LD350