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Old 07-21-2021, 10:42 AM   #1
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Default Baird TI4909DLEDDS - cant exit Burn in mode

Guys

Short story - I have the above Tv with T.MS3463S.U851 mainboard and samsung panel. When powered on, it sits in factory burn in mode, cycling through full screen colours.

Long story - got the set over a year ago, and it had duff LEDS, so replaced the strips. When it was powered back on, it went into the factory burn in mode. Could not find out how to exit (and Menu 1147 did not work) I bought a used main PCB off the bay and all was good.

Foolishly, I did not take a copy of the eeprom.

So - now a few caps in the PSU have failed, so the set wont start. Replaced the bad caps and now the set is back in burn in mode!

Question - does anyone know how to get the set into the factory menu (Menu 1147 not working) and initialise the board?

Plan B is to buy another used mainboard and this time do the smart thing and read the eeprom before fitting...

This set must be oh so sensitive for eeprom corruptions...


Thanks in advance for your help.

David
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Old 07-21-2021, 11:46 AM   #2
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

Check if the LVDS cable is well inserted into the T-CON and MAIN, if the contact is poor, the panel may go into diagnostic mode.
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Old 07-21-2021, 03:25 PM   #3
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

Try exit on the remote or power button on the TV itself.
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Old 07-22-2021, 04:10 AM   #4
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

Thanks Neil and Lotas

I have tried both to no avail.

There must be a sequence to get into factory mode....just need to keep Googling I expect for combinations for every user of the mainboard and hopefully find it....


David
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Old 07-22-2021, 04:49 AM   #5
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

Hmm... for some reason I have it in my mind that you have to let the TV set finish the burn in mode and cant be exited.
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Old 07-22-2021, 08:13 AM   #6
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

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Originally Posted by CapLeaker View Post
Hmm... for some reason I have it in my mind that you have to let the TV set finish the burn in mode and cant be exited.
Thats an option... I had never thought of that!

I wonder if its like, 24hours or so.... will no doubt be a lengthy wait. I did notice it "chimed" after a period of time... wonder if that then indicates that an exit is possible....

I will give it a go.

Given my experience with the set, it really feels like the mainboard is somewhat fragile to power quality and unexpected outages.

David
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Old 07-22-2021, 10:11 AM   #7
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

on the tv has it a source or input button if so hold for 5 seconds if not try holding standby for 5 seconds
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Old 07-22-2021, 10:02 PM   #8
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

I had a RCA or Haier stuck in aging mode and I had to buy a main board, read the eeprom, reflashed the bad one, and resold the board.
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Old 07-23-2021, 02:42 AM   #9
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

Quote:
Originally Posted by neilc6 View Post
I had a RCA or Haier stuck in aging mode and I had to buy a main board, read the eeprom, reflashed the bad one, and resold the board.
Funny you say that - I ordered a mainboard off the bay for exactly that tactic!

Will post the bin when I do it to help future folks...

David
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Old 07-24-2021, 05:33 AM   #10
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

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Originally Posted by URL View Post
Funny you say that - I ordered a mainboard off the bay for exactly that tactic!

David
Board arrived.... cant get a clean read off the eeprom (fails verify each time).... so back on the search for a bin.... or live dangerously with the replacement board until the next time!


David
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Old 07-24-2021, 05:41 AM   #11
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

Are you removing it from the board to read it?
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Old 07-24-2021, 08:17 AM   #12
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

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Originally Posted by diif View Post
Are you removing it from the board to read it?
No - was trying to read in-situ... If I read the "duff" board, it reads and verifies in-situ without error - that verifies the proggy and board interference... I hope!.

I did notice too that the two boards have different eeprom chips... and did ensure the proggy was set to the manufacturer's part number before read/write. They are both 24x64 chips.

David

Last edited by URL; 07-24-2021 at 08:49 AM..
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Old 07-24-2021, 08:43 AM   #13
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

This board has SPI flash 25Q64
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Old 07-24-2021, 05:24 PM   #14
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

There can be interference from other components sometimes when reading the chip in situ.
Maybe post photos so we can see the differences.
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Old 07-26-2021, 12:04 PM   #15
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Default Re: Baird TI4909DLEDDS - cant exit Burn in mode

Quote:
Originally Posted by lotas View Post
This board has SPI flash 25Q64

Agreed, yes, my typo with 24.... the proggy sees them as two different manufacturers hence device numbers differ.

I will see if I get two mins to desolder the chip and try again.
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