LG PF1000U short throw projector, FM51E chassis - Page 1
Forum section: electronics / repair

author: kirill_maker
author_rank: Contributor
timestamp: November 01, 2023, 02:38:49 pm
content: Hi!Maybe there are some users around with experience of LG smart tvs/projectors?I'm looking for a dump for the LG PF1000U projector (FM51E chassis), (NAND Hynix H27U1G8F2CTR SPI_FLASH: MX25L8035EM2I, EPROM 24C256C)The projector is trying to power on, all power sequence stages are ok.But, after 5 sec fans are starting to spin at 100% for 5 seconds, judging by the sound, and projector falls into the standby.The problem turned out to be a broken NAND, as it seemed to me:Code:[ 0.110000] NAND device: Manufacturer ID: 0xad, Chip ID: 0xf1 (Hynix NAND 128MiB 3,3V 8-bit)[ 0.110000] redirect_size = 400000, redirect_start = 7c00000[ 0.110000] Loading nand bad block info(00000000+00020000)...[ 0.119000] Mstar nand-flash partition definition[ 0.119000] mtd info : # of partition = 23[ 0.119000] Creating 23 MTD partitions on "NAND 128MiB 3,3V 8-bit":[ 0.119000] 0x00000000-0x00020000 : "bbminfo"[ 0.120000] 0x00040000-0x00060000 : "mtdinfo"[ 0.121000] 0x00160000-0x00760000 : "rootfs"[ 0.121000] 0x00760000-0x007c0000 : "lginit"[ 0.122000] 0x007c0000-0x007e0000 : "crc32info"[ 0.123000] 0x007e0000-0x00800000 : "model"[ 0.124000] 0x00800000-0x00900000 : "logo"[ 0.124000] 0x00900000-0x00a00000 : "cmndata"[ 0.125000] 0x00a00000-0x01200000 : "nvram"[ 0.126000] 0x01200000-0x01300000 : "user"[ 0.127000] 0x01300000-0x01400000 : "ezcal"[ 0.128000] 0x01400000-0x014a0000 : "estream"[ 0.128000] 0x014a0000-0x01620000 : "opsrclib"[ 0.129000] 0x01620000-0x018a0000 : "kernel"[ 0.130000] 0x018a0000-0x03560000 : "lgapp"[ 0.131000] 0x03560000-0x04fa0000 : "lgres"[ 0.132000] 0x04fa0000-0x05be0000 : "lgfont"[ 0.132000] 0x05be0000-0x05c00000 : "tplist"[ 0.133000] 0x05c00000-0x07640000 : "lgres"[ 0.134000] 0x00080000-0x000a0000 : "cert"[ 0.135000] 0x000a0000-0x00140000 : "authcxt"[ 0.136000] 0x00060000-0x00080000 : "hdcp2"[ 0.137000] 0x00140000-0x00160000 : "keyrsrv"[ 0.138000] mod_nand_init is invoked[ 0.138000] GE driver inits[ 0.138000] mod_iic_init is invoked[ 0.138000] model option =0xfc[ 0.138000] Mstar_emac: [ PHY Addr ] ==> :0[ 0.138000] Mstar_emac: alloRAM_VA_BASE = 0xA0C40000 alloRAM_PA_BASE= 0xC40000 alloRAM_SIZE= 0x100000[ 0.139000] RBQP_BASE = c44000[ 0.140000]  _mod_scaler_init[ 0.140000] init 170[ 0.140000] MDrv_CC_Init[ 0.140000] init 172[ 0.140000] init 245[ 0.140000] init 251[ 0.141000] TCP cubic registered[ 0.141000] NET: Registered protocol family 17[ 0.142000] RPC: Registered udp transport module.[ 0.142000] RPC: Registered tcp transport module.[ 0.142000] Adding user_initcall = 0x803a1314[ 0.142000] Adding user_initcall = 0x803a1320[ 0.142000] Adding user_initcall = 0x803a66f8[ 0.144000] VFS: Mounted root (squashfs filesystem) readonly.[ 0.150000] VFS: Mounted lginit (squashfs filesystem) readonly.[ 0.150000] Freeing unused kernel memory: 132k freed[ 0.204000] SQUASHFS error: Can't find a SQUASHFS superblock on mtdblock19[ 0.225000] Empty flash at 0x000213bc ends at 0x00021800[ 0.234000] Empty flash at 0x00023200 ends at 0x00023800[ 0.242000] Empty flash at 0x00024bbc ends at 0x00025000[ 0.250000] Empty flash at 0x000271ec ends at 0x00027800[ 0.250000] jffs2_scan_inode_node(): CRC failed on node at 0x00028fe0: Read 0xffffffff, calculated 0x916f9a2e[ 0.258000] Empty flash at 0x00029120 ends at 0x00029800[ 0.264000] Empty flash at 0x0002ab84 ends at 0x0002b000[ 0.289000] Empty flash at 0x00040878 ends at 0x00041000[ 0.289000] jffs2_scan_dirent_node(): Node CRC failed on node at 0x000427f4: Read 0xffffffff, calculated 0x2322e93dThere is no epk update file for this device and I've tried to fix dump through Linux jffs2/squashfs mount and check.NAND has no bad blocks as well.Dumps:https://mega.nz/file/3J1yHJDZ#gYX0safKW1u3Yo_gnsbBCuU3PY1PjlIz93HhyNDma6QService manual for FM51E chassis:https://mega.nz/file/2I9SDKzK#BaFlP0qXkpq7zOkhHXBPXYT8EzF4nqmZApsiouKRJUASo if someone can check my dump or share dump for healthy device - I will appreciate itThanks!

author: kirill_maker
author_rank: Contributor
timestamp: February 19, 2024, 01:19:10 pm
content: UP^