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AOC LM722 REPAIR TIPS FOR INVERTER CCFL INVERTER SCH
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SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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Looking for similar aoc manual?
Good luck to the repair!
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AOC LM-722 TIPS FOR CCFL LM722 REPAIR LM 722
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Relevant OTHER forum topics:
Sziasztok!
Hoztak egy boxot, hogy nem működik. Táp van, de csak a fehér led villog. 5 másodpercig világít, aztán 1 másodperc szünet. HDMI-n nincs jel.
Van erre valami ötletetek?
Jácint
Sziasztok!
Hozzám került egy analóg elektromos orgona.
Az állapota elég hervasztó.
Sikerült feléleszteni, baja van még bőven.
Amire kíváncsi lennék, ismerős valakinek a típus?
Adattábláján már csak annyi látszott, hogy olasz.
Márka, típus semmi.
Itt egy kép róla:
http://kepfeltoltes.hu/view/150324/DSCN2840_www.kepfeltoltes.hu_.jpg
Üdv
LBalázs
Good afternoon!
I'm looking for a dump for the LG PF1000U projector (chassis FM51E), (NAND Hynix H27U1G8F2CTR SPI_FLASH: MX25L8035EM2I, EPROM 24C256C).
There is no epk file available anywhere :(
This device attempts to turn on and responds to both buttons and the remote control:
It exits standby, runs the fans for 5 seconds, then spins them at 100% for another 5 seconds judging by the sound, and then goes back into standby.
The problem seems to be a corrupted NAND as it appears to me:
[ 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 partitions = 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] [SCALER][000173] _mod_scaler_init
[ 0.140000] [TTX_DRV][00508]init 170
[ 0.140000] MDrv_CC_Init
[ 0.140000] init 172
[ 0.140000] [DEMOD_DRV][00369]init 245
[ 0.140000] [BDMA_DRV][00629]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[0] = 0x803a1314
[ 0.142000] Adding user_initcall[1] = 0x803a1320
[ 0.142000] Adding user_initcall[2] = 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 0x2322e93d
Thank you in advance!
I'm looking for a dump for the LG PF1000U projector (chassis FM51E), (NAND Hynix H27U1G8F2CTR SPI_FLASH: MX25L8035EM2I, EPROM 24C256C).
There is no epk file available anywhere :(
This device attempts to turn on and responds to both buttons and the remote control:
It exits standby, runs the fans for 5 seconds, then spins them at 100% for another 5 seconds judging by the sound, and then goes back into standby.
The problem seems to be a corrupted NAND as it appears to me:
[ 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 partitions = 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] [SCALER][000173] _mod_scaler_init
[ 0.140000] [TTX_DRV][00508]init 170
[ 0.140000] MDrv_CC_Init
[ 0.140000] init 172
[ 0.140000] [DEMOD_DRV][00369]init 245
[ 0.140000] [BDMA_DRV][00629]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[0] = 0x803a1314
[ 0.142000] Adding user_initcall[1] = 0x803a1320
[ 0.142000] Adding user_initcall[2] = 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 0x2322e93d
Thank you in advance!
Sziasztok!
Fenti töltő tönkrement. D16-os zenert már előttem cserélték egy sima diódára... Mi lehetett benne eredetileg? Az is segítség lehet, hogy üresjáratban mekkora feszültséget ad ki. A D16 az optocsatoló "aljába" van bekötve.
Megoldva, 15V-os.
Üdv: Jácint
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