Norcent LT3290 Service Manual
Also see for VION LT-3290: Specifications
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Contents
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32’’ LCD TV Norcent LT3290215. Repair Flow Chart5.1 Abnormal displayCHECK CN901 PIN9＝12VCN905 PIN3=5V? Check POWER BOARDNGOKCHECK CN407 PANEL connect isnormal? Reconnect CN407NGCHECK X401、X701 is normal? Check surge circuitCHECK U108 PIN18, PIN17, PIN14 output wave is OK;PIN9 PIN20 power supply is OK?CHECK U401 PIN R5、PIN T8=3.3V?U401 PIN E6=2.5V? PIN R9=1.8V? CHECK SCALER powerCheck Tuner circuitCheck TV mode display is normal?CHECK I²C1DATA, CLK is normal?CHECK SCALER HS VS is normal?OKOKOKOKOKOKNGNGOKOK |
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