Samsung UN40D6400UF Service Manual

Also see for UN32D6500VF: E-manual Getting started E-manual User manual User manual

4-124. Troubleshooting4-1-4. No Video (Tuner_CVBS)N Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.Symptom Audio is normal but no picture is displayed on the screen.-MajorcheckpointsCheck the Tuner CVBS source-Check the Genoa-P-This may happen when the LVDS cable connecting the Main Board and the Panel is-disconnected.DiagnosticsMAIN BOARDSMPS BOARDT-CONInput the RF source properly.Check Tuner and IC801(Arsenal).Change the Main Assy.Please, contact Tech support.Change the Main Assy.Check IC1001(GenoaS) andIC2001(Parma).Change the Main Assy.NoNoNoNoNoYesYesYesYesPower indicator LED is off.Lamp(Backlight) on, no video ? Check a set in the ‘Stand-by mode’.NoYesCheck the RF source andcheck the connection of RF cable ?Check the CVBS data out of IC901 ?C941 : Tuner CVBSCheck the LVDS cable?Replace the T-con / LCD panel?Check the Power of Tuner ?Pin #4 of Tuner : B3.3V_TunerPin #2 of Tuner : B1.8V_TunerCheck the LVDS clk signal at output ofMain board ? (TX)TX2_CLK : LV_TX2_DN/DPTX4_CLK : LV_TX4_DN/DP212Caution Make sure to disconnect the power before working on the IP board.