LN37A550
SUBJECT: Intermittent backlight lamp operation
SYMPTOM: Backlight will not always turn-on at power up or after a period of time (less than
a minute to 2 hours of operation), the backlight will turn off. Audio is ok.
Part Used Part Number
AS-INVERTER BOARD BN81-03101A
Procedure:
1. Verify that the cable between the SMPS (connector CN1803) and the Inverter board (CN1)
is fully seated into the respective plugs. Inspect connector pins and replace if discolored or
damaged and re-test. (photo 1)
