Hitachi 40HYC42

dragometin

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Join Date: Aug 2016
Posts: 20
Country: France

Hitachi 40HYC42

08-08-2024, 05:53 AM

TV Model: Hitachi 40HYC42
Power Supply: 17IPS71
MainBoard: 17MB95M
Panel: VES400UNDS-2D-NO3

When the set came in it was dead. Fuse was open primary side and the power mosfet was shorted. So I ordered a new power supply. Now it turns on, only displays "Hitachi" and then power off red and blue led flashing.

I had to modify the 0ohm resistors in the led backlight of the new PS like the original power supply.
Is there any variants on 17IPS71 power supply's?

UART output pins 10 and 12 on scart connector:

Code:

12:24:04.595 -> ⸮ keypad_pressed is [0]
12:24:06.666 ->  ir_pressed is [0]
12:24:06.666 -> check_sw_upgrade
12:24:06.666 -> no OAD Flag
12:24:06.666 -> no need to start factory usb download
12:24:06.666 -> no need to start factory usb download
12:24:06.666 ->
12:24:06.666 ->  #* 4. NAND is already programmed (not Empty) ***
12:24:06.666 -> Hit any key to stop autoboot:  0
12:24:06.666 -> ------>update_default_env, idx = 4
12:24:06.666 -> ------>bootargs_default = console=ttyS0,115200 quiet lpj=831488 ubi.mtd=1 ubi.mtd=2,2048 root=ubi1:RFS rootfstype=ubifs ro EMAC_MEM=0x200000 DRAM_LEN=0x20000000 LX_MEM=0x06FF0000 LX_MEM2=0x65C62000,0xA300000
12:24:06.700 -> ------>mtdparts_default = mtdparts=edb64M-nand:5m(KL),16000k(CONF),114m(UBIA),123264k(UBIB),-(NA)
12:24:06.700 -> PWM_MAX / MIN = 255 / 23
12:24:06.700 -> IsBootLogoScalingUp, scalingUp = 0xFF !
12:24:06.700 -> bootlog doing scaling up...>>>
12:24:06.700 -> Boot Logo Resolution = 712 x 400
12:24:06.700 -> SPI_BOOT_LOGO_ADDR = 0x120000
12:24:06.870 -> PWM_MAX / MIN = 255 / 23
12:24:06.870 -> MDrv_PNL_Init u32PnlRiuBaseAddr = BF200000
12:24:06.870 -> MDrv_PNL_Init u32PMRiuBaseAddr = BF000000
12:24:06.870 -> LVDS Swing = 300
12:24:06.870 -> GE_SetOnePixelMode
12:24:07.514 -> UnProtect MIU block 0 : 0x75F1000 0x76C6000
12:24:07.514 ->
12:24:07.514 -> NAND read: device 0 offset 0x0, size 0x500000
12:24:07.514 ->
12:24:07.852 ->
Reading data from 0x0x -- 100% complete.
12:24:07.852 ->  5242880 bytes read: OK
12:24:08.090 -> [0;34m*******************************[0m
12:24:08.090 -> [0;34m* Kernel Authentication SUCCESS !! *[0m
12:24:08.090 -> [0;34m*******************************[0m
12:24:08.090 -> partition_num=3
12:24:08.090 -> 0x014A0000-0x086A0000 : "mtd=2"
12:24:08.328 -> =========================
12:24:08.328 -> RootFs's Size : 0x155000
12:24:08.328 -> RootFs's offset : 0x0
12:24:08.328 -> =========================
12:24:08.328 -> RootFs's Size : 0x155000
12:24:08.328 -> RootFs's offset : 0x155000
12:24:08.328 -> =========================
12:24:08.328 -> RootFs's Size : 0x155000
12:24:08.362 -> RootFs's offset : 0x2AA000
12:24:08.362 -> =========================
12:24:08.362 -> RootFs's Size : 0x155000
12:24:08.362 -> RootFs's offset : 0x3FF000
12:24:08.362 -> BAK:RootFs's Size : 0x155000
12:24:08.362 -> Volume RFS found at volume id 1
12:24:08.362 -> read 1396736 bytes from volume 1 to 84000000(buf address)
12:24:08.566 -> [0;34m*****************************[0m
12:24:08.566 -> [0;34m* Rootfs Authentication SUCCESS !! *[0m
12:24:08.566 -> [0;34m*****************************[0m
12:24:08.566 -> =========================
12:24:08.600 -> RootFs's Size : 0x155000
12:24:08.600 -> RootFs's offset : 0x554000
12:24:08.600 -> =========================
12:24:08.600 -> RootFs's Size : 0x155000
12:24:08.600 -> RootFs's offset : 0x6A9000
12:24:08.600 -> =========================
12:24:08.600 -> RootFs's Size : 0x155000
12:24:08.600 -> RootFs's offset : 0x7FE000
12:24:08.600 -> =========================
12:24:08.600 -> RootFs's Size : 0x155000
12:24:08.600 -> RootFs's offset : 0x953000
12:24:08.634 -> Volume VEN found at volume id 2
12:24:08.634 -> read 9951744 bytes from volume 2 to 84000000(buf address)
12:24:09.550 -> [0;34m*****************************[0m
12:24:09.550 -> [0;34m* VEN Authentication SUCCESS !! *[0m
12:24:09.550 -> [0;34m*****************************[0m
12:24:09.584 -> ## Booting image at 81000000 ...
12:24:09.584 ->    Image Name:   Linux-2.6.28.10-CL677690-mstar
12:24:09.584 ->    Created:      2014-05-22   5:02:26 UTC
12:24:09.584 ->    Image Type:   MIPS Linux Kernel Image (uncompressed)
12:24:09.584 ->    Data Size:    3531396 Bytes =  3.4 MB
12:24:09.584 ->    Load Address: 80200000
12:24:09.584 ->    Entry Point:  80204150
12:24:09.652 -> OK
12:24:09.652 ->
12:24:09.652 -> Starting kernel ...
12:24:09.652 ->
12:24:09.652 -> >>CMD:93,8,1,0,0,0,0
12:24:09.652 ->
12:24:09.652 -> MDrv_Ursa_6M30_3D_Cmd write data fail.....
12:24:09.652 -> sellect lvds on/off error!!!
12:24:12.266 -> Control BacklightDim with GPIO
12:24:12.266 -> MDrv_Ursa_PNL_ON...
12:24:12.266 -> Hello UART
12:24:12.266 ->
[ERROR] PIU UART1 Init Failed
12:24:12.844 ->
init started: BusyBox v1.14.1 (2013-10-09 22:32:32 CST)
12:24:12.878 ->
starting pid 249, tty '': '/etc/init.d/rcS'
12:24:12.912 -> mount: no /etc/mtab
12:24:12.946 -> mount: no /etc/mtab
12:24:12.946 -> mount: mounting usbfs on /proc/bus/usb failed: No such file or directory
12:24:12.946 -> mount: no /etc/mtab
12:24:12.946 -> mount: no /etc/mtab
12:24:12.946 -> mount: no /etc/mtab
12:24:12.946 -> Mounting conf
12:24:13.014 -> mount: no /etc/mtab
12:24:13.014 -> Mounting vendor
12:24:13.048 -> mount: no /etc/mtab
12:24:13.048 -> Mounting var
12:24:13.082 -> mount: no /etc/mtab
12:24:13.082 -> Mounting tmp
12:24:13.082 -> mount: no /etc/mtab
12:24:13.082 -> ifconfig: SIOCSIFADDR: Invalid argument
12:24:13.116 -> ln: /vendor/lib/utopia/lib: Read-only file system
12:24:13.116 -> NO IP tuner - NOT Starting Telnetd Service, External Watchdog, Dhcp Client, Bootcaster Client And Thttpd Server...
12:24:13.726 -> Debug(drm): assert,log
12:24:13.997 -> [MSOS_PRINT][000567]     pthread_mutex_init
12:24:13.997 -> [MSOS_PRINT][000569]     CHIP_InitISR
12:24:13.997 -> Flash is detected (0x0507, 0xC2, 0x20, 0x15)
12:24:14.065 -> SPI 02M
12:24:14.065 -> [1;35m MBootVer = 02M-339_1.6S95M [0m
12:24:14.065 -> [1;35m Get [M-], VerNum = 339[0m
12:24:14.065 -> [1;35m MBootVer = 339, 260 ---> [0m
12:24:14.065 -> [0;31m[ICE_InitialiseSystemMemory, 152]MMAP from SPI:4[m
12:24:14.099 -> [0mNo Netflix
12:24:14.099 ->   [000]                                MMAP_AEON_MEM0x0, 0x200000, 0
12:24:14.133 ->   [001]                                  MMAP_LX_MEM0x200000, 0x6ff0000, 0
12:24:14.133 ->   [002]                             MMAP_EMAC_BUFFER0x71f0000, 0x200000, 0
12:24:14.133 ->   [003]                              MMAP_PM_PROGRAM0x73f0000, 0x10000, 65536
12:24:14.133 ->   [004]                                 MMAP_MAD_MEM0x7400000, 0x31c000, 4096
12:24:14.133 ->   [005]                           MMAP_MAD_SE_BUFFER0x7400000, 0x11c000, 4096
12:24:14.167 ->   [006]                          MMAP_MAD_DEC_BUFFER0x751c000, 0x200000, 4096
12:24:14.167 ->   [007]                           MMAP_MMPLAYER_POOL0x771c000, 0x2710000, 4096
12:24:14.167 ->   [008]                                 MMAP_3D_COMB0x771c000, 0x700000, 4096
12:24:14.167 ->   [009]                             MMAP_SECTION_MEM0x7e1c000, 0x200000, 8
12:24:14.167 ->   [010]                                 MMAP_VBI_BUF0x801c000, 0x10000, 8
12:24:14.201 ->   [011]                           MMAP_PVR_DUMMY_BUF0x802c000, 0x200000, 8
12:24:14.201 ->   [012]                              MMAP_TPDATA_MEM0x822c000, 0x82000, 4096
12:24:14.201 ->   [013]                      MMAP_VE_FRAMEBUFFER_ADR0x82ae000, 0x195000, 8
12:24:14.201 ->   [014]                           MMAP_TSP_VQ_BUFFER0x8443000, 0x100000, 8
12:24:14.201 ->   [015]                     MMAP_PVR_DOWNLOAD_BUFFER0x771c000, 0x480000, 4096
12:24:14.235 ->   [016]                       MMAP_PVR_UPLOAD_BUFFER0x7b9c000, 0x240000, 4096
12:24:14.235 ->   [017]                     MMAP_PHOTO_SHARE_MEM_ADR0x771c000, 0x400, 16
12:24:14.235 ->   [018]                        MMAP_MAD_JPEG_OUT_ADR0x771c400, 0x1000000, 16
12:24:14.235 ->   [019]                   MMAP_MAD_JPEG_READBUFF_ADR0x871c400, 0x100000, 16
12:24:14.235 ->   [020]                  MMAP_MAD_JPEG_INTERBUFF_ADR0x881c400, 0x600000, 16
12:24:14.269 ->   [021]                    MMAP_MAD_JPEG_DISPLAY_ADR0x8e1c400, 0x1000000, 16
12:24:14.269 ->   [022]                           MMAP_VDPLAYER_DATA0x771c000, 0x500000, 4096
12:24:14.269 ->   [023]             MMAP_VDPLAYER_BITSTREAM_BUFF_EXT0x7c1c000, 0x500000, 0
12:24:14.269 ->   [024]                 MMAP_VDPLAYER_BITSTREAM_BUFF0x811c000, 0x400000, 0
12:24:14.269 ->   [025]        MMAP_VDPLAYER_SUBTITLE_BITSTREAM_BUFF0x851c000, 0x80000, 0
12:24:14.303 ->   [026]                     MMAP_MP4_SUBTITLE_BUFFER0x859c000, 0x80000, 4096
12:24:14.303 ->   [027]                        MMAP_MP4_SUBTITLE_TAG0x861c000, 0x10000, 4096
12:24:14.303 ->   [028]                          MMAP_SCALER_DNR_BUF0x9e2c000, 0x1815000, 4096
12:24:14.303 ->   [029]                           MMAP_MP3_INFO_READ0xb641000, 0x1000, 4096
12:24:14.303 ->   [030]                                 MMAP_M4A_BUF0xb642000, 0x4000, 4096
12:24:14.337 ->   [031]                                MMAP_M4A_STCO0xb646000, 0x18000, 4096
12:24:14.337 ->   [032]                               MMAP_IRKEY_BUF0xb65e000, 0x400, 4096
12:24:14.337 ->   [033]                               MMAP_MIU1_POOL0xb65f000, 0x600000, 4096
12:24:14.337 ->   [034]              MMAP_VDPLAYER_BMP_SUBTITLE_BUFF0xbc5f000, 0x380000, 0
12:24:14.337 ->   [035]                                MMAP_XC_MLOAD0xbfdf000, 0x1000, 1
12:24:14.371 ->   [036]                             MMAP_2D3D_DD_BUF0xbfe0000, 0x100000, 1
12:24:14.371 ->   [037]                             MMAP_2D3D_DR_BUF0xc0e0000, 0x100000, 1
12:24:14.371 ->   [038]                         MMAP_SCALER_DNR_BUF20xc1e0000, 0x1815000, 4096
12:24:14.371 ->   [039]                                MMAP_MIU0_END0xd9f5000, 0x0, 1
12:24:14.371 ->   [040]                               MMAP_VDEC_CODE0x20000000, 0x100000, 0
12:24:14.405 ->   [041]                        MMAP_VDEC_FRAMEBUFFER0x20100000, 0x1e00000, 0
12:24:14.405 ->   [042]                          MMAP_VDEC_BITSTREAM0x21f00000, 0x600000, 0
12:24:14.405 ->   [043]                                MMAP_OSD_MENU0x22500000, 0x375f000, 4096
12:24:14.405 ->   [044]                                MMAP_OSD_MISC0x25c5f000, 0x2000, 4096
12:24:14.405 ->   [045]                               MMAP_XC_MLOAD10x25c61000, 0x1000, 0
12:24:14.439 ->   [046]                                 MMAP_LX2_MEM0x25c62000, 0xa300000, 0
12:24:14.439 -> [1;33m[mapi_MemoryInit, 192]u8MMAP = 4, u32MIU0End = 0xd9f5000, u32MIU1End = 0x5c62000
12:24:14.439 -> [0mmem_type: 0, phy_addr = 0xb65f000, start_addr = 0x50edb000, size = 6291456
12:24:14.439 -> mem_type: 1, phy_addr = 0xbc5f000, start_addr = 0x3de7f000, size = 0
12:24:14.473 -> ******* ICE_LoadProfileData - Enter
12:24:14.473 -> Load profile /conf/mb95_hwprofile.bin
12:24:14.473 -> ******* ICE_LoadProfileData - Exit
12:24:14.473 -> ******* ICE_LoadProfileData - Enter
12:24:14.473 -> Load profile /conf/mb95_swprofile.bin
12:24:14.507 -> ******* ICE_LoadProfileData - Exit
12:24:14.507 -> FROST_DebugStartConsole !
12:24:14.507 -> Terminal: vt102
12:24:14.507 -> terminal ready
12:24:14.507 ->
12:24:14.507 -> #*### Console Started ###
12:24:14.575 -> CheckForTheFirstTime file open error
12:24:14.575 -> **** ICE_HardwareInit ****
12:24:14.575 ->
12:24:14.575 -> Try loading bin panel file
12:24:14.575 -> Read : 28888 target: 28888
12:24:14.609 ->  No need to update IR Flag
12:24:14.609 -> ----> Rc type: RC5
12:24:14.609 ->
12:24:14.609 -> TUNER : Si2157      EXTENSION : NONE
12:24:14.609 -> Load country file
12:24:14.609 -> HASHKEY[0xd] DIVX[0x0] CONNECTIVITY[0x1] VC1[0x1] SRS[0x0] MPEG4[0x1]
12:24:14.609 -> [1;33m<< CHIP = D8_PRIME, PROJECT = THORIUM_MB90, Customer_Hash = 1 >> [0m
12:24:14.643 -> Auth OK
12:24:14.643 ->
12:24:14.643 -> frost_debug >>> testtool socket: server creation
12:24:14.643 -> ----> logo backlight off
12:24:14.643 -> Read MMAP from SPI:4 from Profile:4
12:24:14.643 -> Read Netflix Enabled from SPI:0 from Profile:0
12:24:14.643 -> ----> additional delay for logo backlight off = 0(ms), loop:0
12:24:14.643 -> Init PWM2
12:24:14.677 ->
12:24:14.677 -> frost_debug >>> testtool socket: server bind is successfull
12:24:14.677 ->
12:24:14.677 -> ICE_LowPowerModeForceStandby(): exit_type[0] - fti_completed[1] - hotel_powerup[2] - profile_powerup[1] - last_state_standby[0]
12:24:14.677 -> [AP]mapi_pm_IlluminatedLogoFadingOn = 1
12:24:14.677 ->
12:24:14.677 -> frost_debug >>> testtool socket: server listen is successfull
12:24:14.881 -> Base = 0x2ad44000
12:24:14.881 -> ----> additional delay for logo off sequence = 194(ms), loop:16
12:24:14.881 -> ----> delete logo off thread
12:24:14.915 -> MApi_XC_Sys_Init 24->60Hz
12:24:14.915 -> _MApi_XC_Sys_Init_Panel
12:24:14.915 -> MDrv_PNL_Init u32PnlRiuBaseAddr = 2ad44000
12:24:14.915 -> MDrv_PNL_Init u32PMRiuBaseAddr = 2aac4000
12:24:14.915 -> [XC,Version][0;36m
12:24:15.050 ->  [m[0;31m[mapi_HardwareReadBin, 262] ASSERT, hwid = 16
12:24:15.084 -> [0mFROST_ASSERT: ice_product_mstar/mstar/mapi/mapi_hardware.c mapi_HardwareReadBin 263
12:24:15.084 -> [_MApi_XC_Sys_Init_PQ, 816] PQ_TEXT_BIN_STD_SUB NG
12:24:15.084 -> TextBinStartaDDR ID0=328ae70
12:24:15.084 -> BinStartaDDR ID0=2b07c008
12:24:15.084 -> BinStartaDDR ID2=328fe78
12:24:15.084 -> BinStartaDDR ID1=2b0e8008
12:24:15.118 -> Found new edid file in file system
12:24:15.118 -> [1;35mMMAP_XC_MLOAD1, Phy_Adr = 0x25c61000, Size = 4096[0m
12:24:15.118 -> jason mapi_pad_init
12:24:15.118 -> [1;33m Pad_Init D8P [0m
12:24:15.424 -> [1;33m[msKeypad_Init, 264]Init Key pad for MB9X!!!
12:24:15.458 -> [0mOpen IIC Kernal Module Success!
12:24:15.458 -> ~~~~mapi_I2cRead fail ~~~~~~s32WCountIIC=-1
12:24:15.458 -> ~~~~mapi_I2cRead fail ~~~~~~s32WCountIIC=-1
12:24:15.458 -> ~~~~mapi_I2cRead fail ~~~~~~s32WCountIIC=-1
12:24:15.492 -> ~~~~mapi_I2cRead fail ~~~~~~s32WCountIIC=-1
12:24:15.492 -> ~~~~mapi_I2cRead fail ~~~~~~s32WCountIIC=-1
12:24:15.492 -> ~~~~mapi_I2cWrite fail ~~~~~~s32WCountIIC=-1(u8ChIIC=0x1, u8SlaveIdIIC=0xB4)
12:24:15.492 -> ~~~~mapi_I2cWrite fail ~~~~~~s32WCountIIC=-1(u8ChIIC=0x1, u8SlaveIdIIC=0xB4)
12:24:15.492 -> ~~~~mapi_I2cWrite fail ~~~~~~s32WCountIIC=-1(u8ChIIC=0x1, u8SlaveIdIIC=0xB4)
12:24:15.560 ->
12:24:15.560 -> Read ERROR...
12:24:15.628 ->
12:24:15.628 -> Read ERROR...
12:24:15.628 -> clock_firmware: 0:: tas_Status: 0
12:24:15.628 -> Init GFX...
12:24:15.628 -> GE_SetOnePixelMode
12:24:15.628 -> GFX lib version: GFX_191700608062
12:24:15.628 ->  
12:24:15.628 -> PoolAlloc(mtype, addr, size, used_size) = (0, 0x512faff0,1966080,1966080 )
12:24:15.628 -> Init OSD Plane... H: 1080, W: 1920, HStr: 112
12:24:15.662 -> GOP Addr: 22500000, 0375f000, 25c5f000, 00002000
12:24:15.662 -> ====================
12:24:15.662 -> First GOP driver instance, flush GWIN HW
12:24:15.662 -> ====================
12:24:15.662 ->
12:24:15.662 -> [GFlip (Driver)][00545] GLIP device not opened!!!!
12:24:15.662 -> [GFlip (Driver)][00545] GLIP device not opened!!!!
12:24:15.696 -> [GFlip (Driver)][00545] GLIP device not opened!!!!
12:24:15.696 -> [GFlip (Driver)][00545] GLIP device not opened!!!!
12:24:15.696 ->
12:24:15.696 -> [GOP_ALL][Driver Version]: 0087, BuildNum: 0017, ChangeList: 00608254
12:24:15.696 -> GOP lib version: GOP_871700608254
12:24:15.696 ->  
12:24:15.696 -> End GOP init
12:24:15.696 -> jason u8KeyData==ffff
12:24:15.730 -> **** Early ICE_AudioInit successful !!!
12:24:15.730 -> Tas5719 is available
12:24:15.730 -> *****romid  80/0x50
12:24:15.730 -> sil2157 firmware
12:24:15.764 -> DSP code loaded successfully
12:24:15.764 -> MApi_AUDIO_SetSystemInfo() : Warning! g_AudioVars should not be NULL !!!
12:24:15.798 -> MApi_AUDIO_SetSystemInfo() : Perform SHM Init here !!!
12:24:15.798 -> [HAL_TSP_CPU_SetBase][2062] load firmware (address, size) = (0x07e1c000, 0x0000281c)
12:24:15.832 -> firmware 111 0x07e1c000 0x00000007 0x0000e1c0
12:24:15.866 -> init Shared
12:24:15.900 -> ------------------> mdev_CofdmDisableTSPAD
12:24:15.934 -> Init SILABS_SI2158(Cust tuner)
12:24:16.002 -> [MFC_ONEBIN] MFC FW version must >= v5.6
12:24:16.002 -> [0;32m[Check_DFB_MMAP_Update, 787]Netflix disable, Skip check DFB mmap
12:24:16.002 -> [0m[1;33m[CheckNetflixEnableState, 917]reset_system = 0
12:24:16.002 -> [0m~~~~mapi_I2cWrite fail ~~~~~~s32WCountIIC=-1(u8ChIIC=0x1, u8SlaveIdIIC=0xB4)
12:24:16.036 -> ~~~~mapi_I2cWrite fail ~~~~~~s32WCountIIC=-1(u8ChIIC=0x1, u8SlaveIdIIC=0xB4)
12:24:16.036 -> ----> MonitorVoltageDropTaskCreate: priority:0, peroid:5
12:24:16.036 -> ~~~~mapi_I2cWrite fail ~~~~~~s32WCountIIC=-1(u8ChIIC=0x1, u8SlaveIdIIC=0xB4)
12:24:16.070 -> ~~~~mapi_I2cRead fail ~~~~~~s32WCountIIC=-1
12:24:16.070 -> (2) == MSB123x NO exist
12:24:16.070 -> MFC is N/A
12:24:16.070 -> [Utopia] T9 is not support
12:24:16.104 -> HW_getMbootVersion ret 1
12:24:16.104 -> =================================================================
12:24:16.104 -> ## Software Version: V.3.6.2j  SVN 149272
12:24:16.104 ->    MBoot Version:    02M-339_1.6S95M
12:24:16.104 ->    NAND Size:        256
12:24:16.104 ->    DDR  Freq:        1300M
12:24:16.104 -> =================================================================
12:24:16.104 -> act ant protection
12:24:16.104 -> ERROR: open file /vendor/config/env.bin
12:24:16.138 -> ***** ICE_HardwareInit end *****
12:24:16.240 -> short circuit detect
12:24:16.240 -> [1;35m[mapi_pm_set_SPIOffsetForMCU, 229] BOOT_FROM_51 [0m
12:24:16.240 -> force_power_down

What "12:24:16.240 -> short circuit detect" means? It does not say where the short circuit is.

I can dump the firmware if needed.

Tags: None

dragometin

Member

Join Date: Aug 2016

Posts: 20

Country: France
#2

08-09-2024, 09:45 AM

After hours of troubleshooting, I found out it's the protection being actiavted. Can someone help me understand this circuit? If I make a jumper fom 3.3V to TP7 and the TV works

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R_J

Badcaps Legend

Join Date: Jun 2012

Posts: 9533

Country: Canada
#3

08-09-2024, 05:27 PM

Is there any variants on 17IPS71 power supply's?

there are many variants of this power supply what are the revision numbers of the boards? 17IPS71-xx There are even changes between the same revision sometimes.

Do you have all four voltages present to the protection circuit? and are all the components for that circuit installed?

Last edited by R_J; 08-09-2024, 05:46 PM.
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Hi all!

HISENSE 65E7KQ PRO
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MT9618BAATAB - cpu
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<
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Surface Mount Fuses Fundamentals Datasheet

by Document Archive

TE Circuit Protection offers the widest selection of surface-mount fuses available for addressing a broad range of overcurrent protection applications. Helping to prevent costly damage and promote a safe environment for electronic and electrical equipment, our single-use chip fuses provide performance stability to support applications with current ratings from .5A up to 20A.

TE Circuit Protection also offers the telecom FT600 fuse for telecommunications applications. This telecom fuse helps comply with North American overcurrent protection requirements, including Telcordia, GR-1089,...
- Channel: Common Parts Library - Datasheets
10-07-2024, 06:07 AM
Lenovo S6000 won't turn on. Data recovery needed.

by vbogoev
Hello,

Here I have the mentioned tablet with motherboard s6000-mb-h401. The tablet won't turn on, no display, charging normally. I manage to connect to UART port and got this output when I try to start it:
Code:
```
[PWRAP] pwrap_init_preloader
[PWRAP] pwrap_init
[PWRAP] _pwrap_init_sidly [Read Test] pass,SIDLY=0 rdata=5AA5
[PWRAP] _pwrap_init_sidly [Read Test] pass,SIDLY=1 rdata=5AA5
[PWRAP] _pwrap_init_sidly [Read Test] pass,SIDLY=2 rdata=5AA5
[PWRAP] _pwrap_init_sidly [Read Test] pass,SIDLY=3 rdata=5AA5
[PMIC_WRAP]wrap_init pass,the return
```
...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
06-20-2023, 06:36 AM
Capacitors of the same make/series that consistently fail in one amplifier while they rarely fail in a different make amp

by Perry Babin

This is for car audio amplifiers but I doubt that matters. There are amplifiers that use the same make/series capacitor as a different manufacturer and they consistently fail in one brand. In the other they are OK. The amplifiers are from the same era. Is it possible that the heating profile used when flow-soldering the boards could be the reason for the failure? If not, any ideas on what the difference could be?
- Channel: General Capacitor Questions & Issues
04-03-2024, 10:40 AM
Dell inspirion 5775 bios "Unlock Setup fail"

by remizbushka

Hi sirs. please help
Dell Inspiron 5775 bios locked "Unlock Setup fail"

After generating the Password Recovery code, I go to the “Security” tab - “Locked Settings” - it says “Unlock Settings? I tried many wrong passwords and it shows an error to unlock settings [ Press any key ].
What I did:
I read the bios dump.
Downloaded the bios update to 1.6.0 from the official Dell website, extracted the dump from it, updated the bios, but the problem persisted. Please help me to solve the problem....
- Channel: BIOS Requests ONLY!
03-24-2025, 09:07 AM
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Hitachi 40HYC42

Hitachi 40HYC42

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