Hi, i have problem with LG Scarlet TV. When i plug power on, it turns's ON itself without pressing button on remote, red led blinks 3 times, then it goes white, and after that it goes to dim white. Turn on tune is heard throug speakers. Backlight turns on but there is no picture and after that backlight start to turn off/on itself. It's on 2-3 seconds and off 2-3 seconds. TV isn't responding to remote commands. Please help.
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Re: LG 37LG6000 Scarlet Problem
Seems like a PSU problem at first thought.....Post pics of TV back with covers removed. -
Re: LG 37LG6000 Scarlet Problem
I don't think so, i have measured all voltages +24 for backlight is OK, +16 is OK, +12 is OK, +5V is OK, +5Vstandby is OK, +3,3V OK, +1,8V OK, +1,2V OK. When i remove cable between IR sensor board and main board then TV isn't starting by itself. So i think maybe problem is somewhere on IR sensor board but i can't track it because there is no schematic of IR board in service manual that i have found on web.
http://www.electronica-pt.com/esquem...89d-lcd-16072/Comment
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Re: LG 37LG6000 Scarlet Problem
OK...So could we see a pic of the IR board, then??Comment
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Re: LG 37LG6000 Scarlet Problem
I would suspect a firmware or main processor issue instead of the IR board.A working TV? How boring!Originally posted by PeteS in CAComment
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Re: LG 37LG6000 Scarlet Problem
is this the ir board used in your set
http://www.ebay.co.uk/itm/EAX4343960...0AAOxyThVTZ4VeComment
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Re: LG 37LG6000 Scarlet Problem
yes, it looks just like this oneOriginally posted by vinceroger69 View PostComment
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Re: LG 37LG6000 Scarlet Problem
Or IC802 (WT61P8-Flat Panel Display Control Sub-MCU), or IC801 eeprom ... i don't know where to start ...Originally posted by Th3_uN1Qu3 View Post
Sometimes happens that TV starts ok and works, and in this case it will work ok until i turn it off.Last edited by sandrabrnelic; 08-26-2016, 02:08 AM.Comment
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Re: LG 37LG6000 Scarlet Problem
Update ...
TV is starting itself even when i disconect cable between mainboard and sensor/led/keys boards. I believe problem is located on mainboard that is starting without any buttons pressed/connected, after that backlight starts blinking, signals from inverter are OK, it blinks because DIM signal goes from 0 to 3V and back. INV_CTL and PANEL_ERROR_DET signals are OK.Comment
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Re: LG 37LG6000 Scarlet Problem
as per post 5 maybe a eeprom issue what is your mainboard numbers etc.Comment
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Re: LG 37LG6000 Scarlet Problem
you mean hardware problem with eeprom or just problem with eeprom content, main eeprom or sub-MCU eeprom, and where can i find sub-MCU .bin ?!Originally posted by vinceroger69 View Post
mainboard is LD89A/D/F EAX39192001(14)Last edited by sandrabrnelic; 08-26-2016, 06:09 AM.Comment
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Re: LG 37LG6000 Scarlet Problem
is there another number on it something like EBU42372382?Originally posted by sandrabrnelic View PostComment
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Re: LG 37LG6000 Scarlet Problem
yes, on the sticker with barcodeOriginally posted by vinceroger69 View PostComment
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Re: LG 37LG6000 Scarlet Problem
what is that number? as theres loads of diffrent mainboardsOriginally posted by sandrabrnelic View PostComment
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Re: LG 37LG6000 Scarlet Problem
It's same number - EBU42372382 !Comment
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Re: LG 37LG6000 Scarlet Problem
I have updated firmware and now everything works fine. I used notebook with serial cable and hyperterminal to be able to do this because every other method didn't work for me.
Here is procedure that i followed (copied from other forum):
To recover an apparently dead lg set you'll need
* a computer with a serial port
* a null modem cable
* a terminal emulation program with file transfer capability (zmodem protocol)
* a good firmware file (*.epk)
* a little care
* a lot of patience
If you don't understand the meaning of anything in this list it's better you call lg service
Warning, incorrect operations could irreparably damage your set
This is the sequence of actions:
1. turn off the tv (by removing the power cable or using the on/off switch, all leds must be off)
2. connect the service port on the tv to the computer serial port with a null modem cable
3. start the terminal emulation program an set the speed at 115200, 8 data bits, no parity, 1 stop bit, no hardware or software handshake
4. turn on the tv and at the same time press Esc on the keyboard. It may be necessary to press Esc more than once
5. if everything goes well, you'll be greeted by a "Mstar #" prompt (here you can write help to obtain a list of available commands in the u-boot bootloader)
6. issue the swuz command (software upload zmodem). the tv will await the file
7. in the terminal emulation program select the correct firmware file (.epk) to send to the tv
8. don't touch anything and hope there's no power cut (it's a long process!)
9. once the file has been successfully transferred, turn off the tv
10. disconnect the serial cable
11. turn on the tv and hopefully it will work
The only difference is that my TV didn't have "Mstar" prompt, after pressing esc it gives "douglas" prompt, everything else was exactly as described here.Last edited by sandrabrnelic; 08-29-2016, 01:35 AM.Comment
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Re: LG 37LG6000 Scarlet Problem
Glad you managed to update the firmware and thank you for the instrucions too could you please upload the firmware files you used? as thses may help other members out too.Comment
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Re: LG 37LG6000 Scarlet Problem
Here is .epk file for 37LG6000 that i have used, it's 3.49.0 version of firmware. I'm not sure but i think it's good for all LG6000 series TV's.
And one more thing that i want to mekae clear ... in step 7. you need to click on "transfer" and then choose "send file ..." if you're using Hyperterminal, after that you need to choose zmodem protocol.Last edited by sandrabrnelic; 08-29-2016, 05:15 AM.Comment
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Re: LG 37LG6000 Scarlet Problem
I fixed it!Originally posted by sandrabrnelic View Post
my TV's problem was that when you turn it on, the only thing that happens is the power indicator gets white, and the backlight turns on. When you turn it off, it takes about 10 seconds to respond until it finally turns off.
It bugged when i enabled the setting for the startup sound, and then when i restarted the tv, it didnt want to start.
The steps i did to fix my problem are pretty much the same as in this guide, but in my case when i turned on the tv (step 4) to connect, the tv restarts after at most 1 second and then the connection gets lost. Then it connects again and then it restarts again etc. So i had to press escape many times until it stopped restarting, and then i could finally write commands.
Another thing was that i tried many terminal emulation programs, but the one which worked for me was Terra Term.
Terra Term link: http://hp.vector.co.jp/authors/VA002416/teraterm.html
How to use the program: https://www.youtube.com/watch?v=ofhKCXVbu-0
i hope this helps anyone
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