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-   -   Baird TI4909DLEDDS - cant exit Burn in mode (https://www.badcaps.net/forum/showthread.php?t=97534)

URL 07-21-2021 10:42 AM

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

lotas 07-21-2021 11:46 AM

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.

neilc6 07-21-2021 03:25 PM

Re: Baird TI4909DLEDDS - cant exit Burn in mode
 
Try exit on the remote or power button on the TV itself.

URL 07-22-2021 04:10 AM

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

CapLeaker 07-22-2021 04:49 AM

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.

URL 07-22-2021 08:13 AM

Re: Baird TI4909DLEDDS - cant exit Burn in mode
 
Quote:

Originally Posted by CapLeaker (Post 1060174)
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

vinceroger69 07-22-2021 10:11 AM

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

neilc6 07-22-2021 10:02 PM

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.

URL 07-23-2021 02:42 AM

Re: Baird TI4909DLEDDS - cant exit Burn in mode
 
Quote:

Originally Posted by neilc6 (Post 1060319)
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

URL 07-24-2021 05:33 AM

Re: Baird TI4909DLEDDS - cant exit Burn in mode
 
Quote:

Originally Posted by URL (Post 1060344)
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

diif 07-24-2021 05:41 AM

Re: Baird TI4909DLEDDS - cant exit Burn in mode
 
Are you removing it from the board to read it?

URL 07-24-2021 08:17 AM

Re: Baird TI4909DLEDDS - cant exit Burn in mode
 
Quote:

Originally Posted by diif (Post 1060555)
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

lotas 07-24-2021 08:43 AM

Re: Baird TI4909DLEDDS - cant exit Burn in mode
 
This board has SPI flash 25Q64

diif 07-24-2021 05:24 PM

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.

URL 07-26-2021 12:04 PM

Re: Baird TI4909DLEDDS - cant exit Burn in mode
 
Quote:

Originally Posted by lotas (Post 1060581)
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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