LGP4247 - LED LCD TV SMPS - EAY62608903 – EAX64744204 - Schematic

LG 42 inch LED LCD TV - LGP4247L-12LPB-3PM - Power Supply Regulator Circuit Diagram - EAY62608903 – EAX64744204 

Used semiconductors: FAN7930MBX-G – STR A6059H – STF13NM60N (FET) Firmware Version 1.00a - Checksum 0x2214

Schematic

Connector voltages

Power Supply Unit EAY62608903

On Condition: In a moment of Power ON Signal activated, the current of 3.5V output should be limited within 40mA(Max) at LCD TV condition for stability.  Do not turn “Power ON” Signal on at the load condition of 3.5V output, more than 40mA.

Total regulation for each output circuit includes the results of input voltage variation, load variation, warm-up drift and temperature change.

Ripple and noise are measured at the end of output cable which are added a 0.1uF ceramic capacitor and 47uF electrolytic capacitor. (Connected parallel).

Burn-in

More than 2 hours at 40℃ (±5℃), Normal input voltage. 

AC on/off must be test 1 time after burn-in. 

80% Load (except LED String current: 130mA) of specification