创维37E82RD液晶电视（8K49机芯）不开机的检修思路 (创维电视37l17sw)
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故障机创维ERD液晶电视(8K机芯)，故障表现为蓝灯亮，但不开机。拆机检测主板各个供电全部正常，怀疑数据问题，重刷数据无果，最后一招，连接编程器打印*。鼠标一点，打开电视电源，编程器窗口出现了一串串看不懂的字母符号和数字：Boot-DRAMChannelACalibration.Byte0:Gating(6~),Size=,Mid=,Set=.Byte1:Gating(1~),Size=,Mid=,Set=.HWByte0:DQS(~),Size,Set,HW_Set.HWByte1:DQS(~),Size,Set,HW_Set.DRAMASize=Mbytes.BootStartPmain0xaNandbootNID=0xf1ecLZHSaddr:0xLZHSsize:0xaedLZHSchecksum:0xd5BootStartLmainMTBootLoaderv0.9Bootreason:A/Cpoweron!!LoadVGAinternalEDID.................LoadHDMIinternalEDID.................CECPhysicaloffsetHDMI1Physicaladr0xHDMI1PA0xHDMI1checksum0x9dHDMI2PA0xHDMI2checksum0x8dHDMI*A0xHDMI3checksum0x7dHDMI4PA0xHDMI4checksum0x6dSIF_Master0:newdesignSIF_Master1:olddesignEEPROM_Read()0EEPROM_Read()1EEPROM_Read()2EEPROM_Read()3EEPROM_Read()4EEPROM_Read()5EEPROM_Read()6EEPROM_Read()7EEPROM_Read()8EEPROM_Read()9EEPROM_Read()failed###EEPROMreadloaderconfigfailed!!!IRDATAregister:0x0Bootreason:A/Cpoweron!!TinitA/Concaseloaderstage...LoadTFW(addr:0xd7c1d0,size:)success!!TFWversion:Tchangetoloaderstage...LDR_FlashCopy0xfxxDetectNANDflashID:0xF1ECDetectSSK9F1GU0B/C/DNANDflash(SLC):MBNAND_BDM_Mount:Partid=0,offset=0x0,size=0xNAND_BDM_Mount:Partid:0,TotalBlockCount:,BadBlockCount:0IRDATAregister:0x0Bootreason:A/Cpoweron!!TinitA/Concaseloaderstage...LoadTFW(addr:0xd7c1d0,size:)success!!TFWversion:Tchangetoloaderstage...Bootreason:A/Cpoweron!!Bootreason:A/Cpoweron!!Org:0xFlags:0xEEPROM_Read()0EEPROM_Read()1EEPROM_Read()2EEPROM_Read()3EEPROM_Read()4EEPROM_Read()5EEPROM_Read()6EEPROM_Read()7EEPROM_Read()8EEPROM_Read()9EEPROM_Read()failed勉强看懂了。
整理分享创维37E82RD液晶电视（8K49机芯）不开机的检修思路 (创维电视37l17sw)，希望有所帮助，仅作参考，欢迎阅读内容。
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接下来就是查IIC总线了，测试UM5(C)5、6脚电压相差很大，经查UM5总线只有两路、一路去主芯片另一路去高频头。先简后繁原则先把高频头总线切断，然后开机，熟悉的音乐声出现了！UM、6脚电压也恢复正常了。考虑到本机高频头已没用途，至此本机已算修复逐交付用户。
