LG OLED 55EG9100 TCON troubles

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

can you show us here same page IN_START of the original T-CON in place ?

did you sent IN_STOP before while original T-CON in place ?

Hi , I remember now that I did update to last version firmware when I fix all the parts ( new motherboard, new T-CON from broken screen tv ) to the panel with the T-CON that switch off after few sec with messages in IN-StART “power_off_due_to_cooling”.

I did IN-STOP after few refresh pixel and nothing changes from the vertical bands

If I swap the old T-CON even with his original motherboard or new motherboard will work but like I said it's switch OFF after 30 sec

See pic attached with the good panel and new motherboard + OLD t-con

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

can you show us here same page IN_START of the original T-CON in place ?

did you sent IN_STOP before while original T-CON in place ?

I did IN-STOP with the Original T-CON then boot restart and same as usually turn off tv ( POWER_OFF_BY_COOLING(0x65) message on IN-START at Power ON/OFF status

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

I believe that any OLED 2019 up the panel ( screen) come with his T-Con board some how are married panel+t-con

So for my first post, was about if it’s possible to copy data from the Old T-CON without soldering the chip , and then write the data in to the new T-CON ( probability T-con and panel share same information)

But before that like Diah said to try rollingback or downgrade the firmware and then give a try install old firmware in to the tv and see how it’s going on

[Diah]

Re: LG OLED 55EG9100 TCON troubles

I did IN-STOP with the Original T-CON then boot restart and same as usually turn off tv ( POWER_OFF_BY_COOLING(0x65) message on IN-START at Power ON/OFF status

it tell the story from yours last IN_START photo.. the old T-CON matching with Panel. the new one was NG also the interface of the new T-CON are different from the old one. wait of yours USB JTAG and do the eeprom work or downgrade

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

it tell the story from yours last IN_START photo.. the old T-CON matching with Panel. the new one was NG also the interface of the new T-CON are different from the old one. wait of yours USB JTAG and do the eeprom work or downgrade

Hopefully today will arrive the USB JTAG , and I will write any updates here.. fingers crossed

Thank you again for taking from your time to write and share your suggestions and knowledge

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

it tell the story from yours last IN_START photo.. the old T-CON matching with Panel. the new one was NG also the interface of the new T-CON are different from the old one. wait of yours USB JTAG and do the eeprom work or downgrade

By the way the eeprom chip it the one i made a sign?

[Diah]

Re: LG OLED 55EG9100 TCON troubles

read the lable of it and you will know for sure

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

read the lable of it and you will know for sure

Thanks, I will do that, can wait finish the job .

[lotas]

Re: LG OLED 55EG9100 TCON troubles

By the way the eeprom chip it the one i made a sign?

The photo does not show the EEPROM, what you labeled as mosfet transistors.
The only chip where the firmware is located in this photo is U3 (NAND or EMMC), the marking is not visible in the photo.

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

The photo does not show the EEPROM, what you labeled as mosfet transistors.
The only chip where the firmware is located in this photo is U3 (NAND or EMMC), the marking is not visible in the photo.

Hi , thank you, for confirming that, that makes hardly now to read data from the NAND I didn't see in the pic for NAND reading device in the one I just order for eeprom chip

Any easy ideea how to copy data from the one you said? Thank you

[lotas]

Re: LG OLED 55EG9100 TCON troubles

Maybe something is on the back of the T-con.

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

Maybe something is on the back of the T-con.

I will check, after job

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

No luck to be flush the NAND the chip looks to sensible to be unsoldered and re soldering

I m still searching what parts from the old T-con made to turn off after few sec probably by any parts getting to hot and then go to protection mode , what about the MOSFET ? Can be the problem?

[Diah]

Re: LG OLED 55EG9100 TCON troubles

you are just jumping between solutiones, mean while i never heared on this heating error..

rollingback firmware more easy.. because downgrade you need old firmware version which LG remove them from download. unless you write at any forum of this model if some one upload it for you.

however i will try to write to you later how to rollingback the firmware.. mean while when you install the old T-CON did you screw it complete with the metal shield and chassis ?

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

you are just jumping between solutiones, mean while i never heared on this heating error..

rollingback firmware more easy.. because downgrade you need old firmware version which LG remove them from download. unless you write at any forum of this model if some one upload it for you.

however i will try to write to you later how to rollingback the firmware.. mean while when you install the old T-CON did you screw it complete with the metal shield and chassis ?

Yes you right should try rollinback firmware, I will really appreciate any suggestions how to do it, whenever you got time.

The old T-CON been always with the shield ON to the panel chassis, and I try even without and just the screw , just to see any difference, nothing change still turn OFF , and if you insist to turn on back it's turn off quickly then the first ON … it's coz something getting hot and go in the protective mode I believe

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

I have video with the tv ON with the old T-CON the picture it’s quality
https://m.youtube.com/shorts/ctEt7Tq52mA?feature=share
https://youtube.com/shorts/Vo0XRg074VU?feature=share

[Diah]

Re: LG OLED 55EG9100 TCON troubles

I have video with the tv ON with the old T-CON the picture it’s quality

why you play with LG service RC ??? you dont have its RC????
and why you dont programm the Tv channel ??? or at least feed it with external HDMI signal ???? or play movie mpeg with USB drive ?????

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

why you play with LG service RC ??? you dont have its RC????
and why you dont programm the Tv channel ??? or at least feed it with external HDMI signal ???? or play movie mpeg with USB drive ?????

Oh, sorry I recorded just to see all the menu settings from the service menu coz like you know the tv turn OFF between 30 sec - 1 min and then to compare with the new T-CON

I do have 3 RC + service RC

I will add new video with Burn Test 5% grey with the old T-CON and a video with my OLED55B8 and the C9 with the old T-con

https://youtu.be/4Um_XMKYzj0 burn test
https://youtube.com/shorts/8wU7d7teWk8?feature=share B8 vs C9 old T-CON damage

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

Maybe later I will talk about the upgrade experiment I have done ( maybe someone will be interested to know or to do it )

I have upgrade my B8 with C9 motherboard I confirmed that all works good on the B8

C9 motherboard + wifi card with the switcher ON/OFF

[Andrei_UK]

Re: LG OLED 55EG9100 TCON troubles

Maybe later I will talk about the upgrade experiment I have done ( maybe someone will be interested to know or to do it )

I have upgrade my B8 with C9 motherboard I confirmed that all works good on the B8

C9 motherboard + wifi card with the switcher ON/OFF

See pic the update works too