Hisense LCD47P69P, LCD42P69P service manual Troubleshooting for Audio

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LCD TV Service Manual

7.4 Troubleshooting for Audio

No sound

Check connecter

NO

Check speaker wire

NO

Check speaker set

NO

Replace main board

YES

YES

YES

YES

Reconnect

Replace speaker wire

Replace speaker set

OK

NO

Replace PSU

Hisense Confidential

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Contents Product Type：LCD42P69P、LCD47P69P Contents Precautions and notices Hisense Confidential Hisense Confidential Hisense Confidential Hisense Confidential Hisense Confidential Hisense Confidential Product Function Specifications Back Cabinet Specifications LCD Panel Spec LCD47P69P Hisense Confidential LCD42P69P： Factory OSD Menu White BalanceFactory Option Mode M is only used for factory production Hisense Confidential Software Upgrading Get ready for upgradingHisense Confidential Upgrading with the MtkTool Choose the current BaudRate Hisense Confidential Update with USB directly Hisense Confidential Troubleshooting Troubleshooting for Remote Control Troubleshooting for Function Key TV won’t Power On Troubleshooting for Audio Troubleshooting for TV/VGA/HDMI input Troubleshooting for YPbPr input Troubleshooting for Video/S-Video input Explode View Schematic circuit diagram Page Near IC MT8222P1V1 DDR1 Version BL-ADJUST BL-ON/OFFPWCTL1 +5VTUNERU1RX U1TX Redp INT Vgagnd ORESET# Vgasog Oiri Grnp Blup GPIO11 GpioOiri INT ICE RDQ0AV12DRGB Ddrv AV12PLL AV12ARGBBAV33DAC AV33VGA GNDRDQS0 RDQS1 RCAS# RRAS#MEMDQ0 RDQ0 Rcke MEMDQ1 RDQ1FRESET# Spisck U0RX OSCL0U0TX OSDA0 U1RXHDMI-L-HX CecaHDMIPLUGPWR0 RX0C RX0CBAV1IN CVBS1CVBS1 CVBS2 CVBS3Y0IN SCT1R Y0INGNDPB0IN SCT1G PBR0INGNDSCT1AUROUT SCT1AVCVBS5 SCT1AURIN SCT1AULOUTOSCL0 SCLV50 Iftuner CVBS0P +5VTUNERSDAV50 PWM1 TvainAudlout AudroutMUX1-L MUX1-L TvainO2P Vbrout BL-ADJUST Ockp PWM0 GND BL-ADJUST E0P E1P E2P Eckp E3P E4PLvdsvdd GND Vbrout RESC1005L-HX O0P O1P