Hisense LCD42P69P, LCD47P69P service manual Troubleshooting for TV/VGA/HDMI input

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LCD TV Service Manual

7.5 Troubleshooting for TV/VGA/HDMI input

No picture on the screen

NO

Check Signal Source

YES

Check connect

NO

YES

Check cable

Make sure signal source is available

Reconnect

Replace cable

NO

Replace main board

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： White Balance Factory OSD MenuFactory Option Mode M is only used for factory production Hisense Confidential Get ready for upgrading Software 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-ON/OFF BL-ADJUSTPWCTL1 +5VTUNERGPIO11 Gpio U1RX U1TX Redp INT Vgagnd ORESET# Vgasog Oiri Grnp BlupOiri INT ICE RDQ0AV12PLL AV12ARGBB AV12DRGB DdrvAV33DAC AV33VGA GNDRCAS# RRAS# RDQS0 RDQS1MEMDQ0 RDQ0 Rcke MEMDQ1 RDQ1U0RX OSCL0 FRESET# SpisckU0TX OSDA0 U1RXCeca HDMI-L-HXHDMIPLUGPWR0 RX0C RX0CBCVBS1 AV1INCVBS1 CVBS2 CVBS3Y0INGND Y0IN SCT1RPB0IN SCT1G PBR0INGNDSCT1AV SCT1AUROUTCVBS5 SCT1AURIN SCT1AULOUTCVBS0P +5VTUNER OSCL0 SCLV50 IftunerSDAV50 PWM1 TvainAudrout AudloutMUX1-L MUX1-L TvainGND BL-ADJUST E0P E1P E2P Eckp E3P E4P O2P Vbrout BL-ADJUST Ockp PWM0Lvdsvdd GND Vbrout RESC1005L-HX O0P O1P