LG 32LG40 Training Manual page 26

32” class lcd hdtv w/ built-in dvd player

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Power Supply PWB Test (1) All PWB Disconnected

+5V

P201 Connector disconnected from the Main PWB

AC: Not applied when adding jumper. Applied when making test.

The Power Supply "MUST" be producing STAND-BY +5V before proceeding.

With Power Supply disconnected from other PWBs and AC applied,

confirm that the Power Supply is producing 5V from either Pins

9, 10, 11 or 12. If not, check fuse. If fuse OK and no 5V, replace

Power Supply. If 5V OK then continue.

1st short either pin 9, 10, 11 or 12 (5V) to Pin 19 (PWR) using a 10K

resistor.

This turns on the power supply.

Confirm that the other low voltage power supplies are activated.

Pins 1 and 2 (16V)

Pins 5 and 6 (12V)

Pin 18 (AC Detect) goes high

Fuse F101 Check for 350V (Ballast Voltage)

If any voltage missing, replace Power Supply.

LCD DV

32LG40