Lg OLED rendering yellow as green, I could use your advice.

[Big Pooka]

Hello all,

I just picked up a LG OLED65E6P off of Craigslist (it was practically free). It functions flawlessly in all aspects except it renders yellows as greens. It does so regardless if the source comes through an HDMI port, or streams in through onboard services such as Netflix.

I've factory reset all the color options, cleared the panel noise via the onboard option, and waisted half an hour talking to LG customer service.

Have any of your dealt with this situation?

I understand OLED's are susceptible to burn-in, and looking at the all green (supposed to be yellow) image bellow with the odd discoloration I wouldn't argue there isn't some of that though you can not see it while watching video, but does burn-in cause all of yellow to render green?

Is this most likely a bad panel issue, or possible a bad board issue?

Both of these pics show the source image, and then how it is rendered by the TV.

All yellow:


The Google logo:


Any and all help is greatly appreciated!

Cheers,

BP

[Storyteller12]

Re: Lg OLED rendering yellow as green, I could use your advice.

That’s burn in. Nothing you can do about it

[Big Pooka]

Re: Lg OLED rendering yellow as green, I could use your advice.

I'm not in an position to argue with the burn in diagnosis as I'm ignorant in this area. But for my education, burnin changes all yellow to green? I thought it was more of a ghosting image of whatever was left on the screen for too long.

In case it helps diagnose the issue, this is how the TV renders this link: http://www.lagom.nl/lcd-test/img/colorbands.png

The yellow band is green, and the purple band is blue


Here is the original image:

[Big Pooka]

Re: Lg OLED rendering yellow as green, I could use your advice.

Oh and also, the first two images I posted where from image files dropped into a .mp4 and played over Plex, I didn't realize the TV had the ability to read image files off a usb thumb drive. This is what the original yellow square .jpg images looks like when played off the thumb drive directly (i.e. not made into movie then streamed):

[Diah]

Re: Lg OLED rendering yellow as green, I could use your advice.

this is not burn in as we do know at OLED... its just shut off of cells in this case i would say the red one.
please follow all OLED threat over here to know how to send IN_stop command,,,, and how to run T-CON driver board & Panel as stand alone.

[Big Pooka]

Re: Lg OLED rendering yellow as green, I could use your advice.

@Diah, thanks for the reply. I need to purchase a service remote so I can follow your advice. Is there a model/manufacture of service remote you suggest?

[Diah]

Re: Lg OLED rendering yellow as green, I could use your advice.

Is there a model/manufacture of service remote you suggest?

NO, any will work either android mobile apk if you have set with IR sender.

[Big Pooka]

Re: Lg OLED rendering yellow as green, I could use your advice.

@Diah, thanks as always for the replies.

My service remote came in and I followed what I believe are the correct steps to roll back the firmware.

• Turned the TV on with the regular remote
• Pressed IN_STOP with the service remote
• Entered 0413 when prompted for a password (the TV went to standby once the passcode was entered)
• Waited a minute or two then unplugged the TV from the wall jack
• Waited about 5 minutes until the red standby light extinguished (I assume this was to wait for the capacitors to drain?)
• Plugged the TV back in and started it with the service remote
• Entered all the standard info when prompted by the startup process (locality, timezone, WIFI pass, home over store mode, etc)

The process did not solve my issue, or change the nature of the discoloring.

I have yet to run the T-CON and panel in stand alone mode. Is this the correct procedure for my TV? As a reminder it is a LG OLED65E6P

1- disconnect the mainboard totally from power board ( unplugging socket 201 from mainboard's side) and unplugging the 2 LVDS from the T-CON side

2- unplug, clean, and reinsert the ribbon cable jumper connected at the T-CON from left to right side

3- unplug, clean, reinsert the 4 ribbon cables between T-CON and panel module

4- Make 3 jumpers for the 201 socket on the power board

• A 3.5V to P_ON
• B 3.5V to 12VT_ON
• C 3.5V to DRV_ON

Then plug the TV into the wall socket and observe the screen

Do you by chance have a picture showing the 3 jumpers in place? I'd hate to fry a board on a misunderstanding.

Thanks again for all your time on this.

Cheers,

BP

[Diah]

Re: Lg OLED rendering yellow as green, I could use your advice.

sorry i don't have pictures on yours model, you need to upload yours own one in case you are not sure 100% on what you have. but in general this test depending on 2 points

1:
A- the t_CON driver boards should have the source of 12V & 20-24V which the PSU generated.
B- the jumpers to switch the PSU to start alone with out help of MB SW.

some OLED the T-CON 12V feed come direct from PSU. here the way you wrote will be enough.

but most of OLED the T-CON 12V feed come via the LVDS from the MB... as we are going to disconnect the 2 LVDS , so we need to feed the T-CON 12V from the PSU direct to make wire from 12V on PSU to the T-CON fuse of 12V line

2:

A- some OLED PSU they have standby 3.5V , in this case the way you wrote is enough
B- some OLED the Standby are round 7V and this will go high to 12V when MB switch PSU ON. in this case as we are disconnection MB from the system so we need to use external step down circuit to bring the standby 7V to 3.5V and feed them to other assigned pins to switch PSU on and have the required Voltage to let the test start.
Note: with Point 2. you need to follow also the condition of t-con 12V as i wrote in point 1.

[Big Pooka]

Re: Lg OLED rendering yellow as green, I could use your advice.

@Diah

Here are the boards in my LG OLED65E6P

Power:



T-Con:



Main: (how to I release the 4 black click in fasteners without damaging the underling PCB?)



I know I am asking a lot, but if you would be willing to give me clear directions specific to these boards on how to place the jumpers I would be very grateful!

Cheers,

BP

[Diah]

Re: Lg OLED rendering yellow as green, I could use your advice.

my point 2 A are enough for you

unplug 2 LVDS from MB to T-CON
unplug the socket between PSU and MB from MB side
make jumper 3.5 V to PWR_on#and another jumper from 3.5V to Drv-on
plug in wall ..
check the screen pattern color

[Big Pooka]

Re: Lg OLED rendering yellow as green, I could use your advice.

Hello Diah,

I apparently have missed something.

I unplugged the 2 LVDS:



I unplugged the PSU from the MB at the MB, and jumped 3.5 V to PWR_on, and to Drv-on. For reference I ran a continuity test and got tone for each jump.




When I plugged the TV in, the screen was blank/black/had no input, and the red standby light was not lit. I tried starting with both the remote and pressing the on button on the TV itself.

To test that I did not fry something I put everything back and plugged in again, got the red standby and it started normally.

In my earlier post I asked if I needed to also jump 3.5V to 12VT_ON. You did not mention that in your last reply, is that needed, or is there something else I missed or messed up?

As always, thanks for your help on this.

Cheers,

BP

[Big Pooka]

Re: Lg OLED rendering yellow as green, I could use your advice.

Diah, am I being and idiot by jumping 3.5 from the PBC back to PWR_on and Drv-on on the PBC. Was I supposed to be jumping 3.5 to the associated PWR_on and Drv-on leads on the MB?

[Diah]

Re: Lg OLED rendering yellow as green, I could use your advice.

1- the socket when you disconnect it from MB side... you need first to be sure the pins are the one you need.... the chart on PSU side didnt mean its same on MB side

2- just now you showed the pin chart of the psu... in your case you need
3.5V to PWR_on ( this will turn on the PSU )
3.5V to DRV_on ( this will switch 24V to T-CON)
3.5V to 12VT_on ( this is the 12 v which feed the t-con)

[Big Pooka]

Re: Lg OLED rendering yellow as green, I could use your advice.

Diah I very much appreciate your patience with me, and I really do apologize for not fully understanding your advice here.

Could you please answer the following:

1. Are the 3 jumps you have laid out supposed to run from 3.5v pin(s) on the PSU, to the designated pins (PWR-ON, DRV-ON, 12VT_ON) ALSO on the PBC, or to pins on the MB?
   
   Is it example picture A
   
   
   Or example picture B:
   
   
2. If example A, can I make the jumps as I did earlier on the unplugged connector on the cable as the wires feeding the connector are straight runs from the pins on the PSU?
   
   
3. Or, if it is supposed to be like example B, how would I determine which pins in the unplugged MB socket are the correct ones, as you warned in your last response "you need first to be sure the pins are he one you need.... the chart on PSU side didnt mean its same on MB side" as I do not see a pinout chart on the MB for the?
   Back:
   
   Front:
   

Thanks for sticking with me!

Cheers,

BP

[Diah]

Re: Lg OLED rendering yellow as green, I could use your advice.

use yours example picture A
disconnect the socket from MB side and from the PSu too.... then do the jumpers as solder them on joint solder pins at downside the PSU so u will need solder 4 wires
1-3.5V
2-pwr_on
3_drv_on
4_12VT_on
and connect the other end of them all 4 together.... this is easy way and safe way so you will not make mistake at the pins.

[Big Pooka]

Re: Lg OLED rendering yellow as green, I could use your advice.

Thank you, Diah! I'll get to it later today and circle back with the results.

[Big Pooka]

Re: Lg OLED rendering yellow as green, I could use your advice.

Alright, just a quick check in with you, Daih before I plug this sucker back in :-)

I removed the PSU, flipped it over and soldered jumpers to the solder point pins:

• Purple wires to pwr_on, drv-on, and 12VT-on
• White wire to one of the 3.5v pins
• Combined all 4 wires and soldered the joint
• Ran a continuity test which toned on all 4 pins in the connector with jumpers soldered to the backside solder points. It also toned on the other two 3.5v pins indicated on the pinout chart which I did not solder jumpers to.

If you give me the green light (i.e. I've done as suggested), I will remount the PSU (making sure the jumpers are not dislodged and not grounded or shorted), will leave it unplugged from the cable that runs to the MB (also unplugged on the MB side) and will plug her in hopefully to find a color pattern on the panel.

Am I good to go?

[lotas]

Re: Lg OLED rendering yellow as green, I could use your advice.

Never connect with jumpers, you need to connect through 1 kOhm resistors.

[Diah]

Re: Lg OLED rendering yellow as green, I could use your advice.

if you are sure the jumpers to assigned pins go ahead and plug it in wall... and took photos on the color the screen sow... give time for it running in this test... i will repair pixel in case we do have issue too

Never connect with jumpers, you need to connect through 1 kOhm resistors.

yours statement wrong.....1K considered only to have protection in case you are not sure the pins assignment... but when he do at the socket downside and he is sure its the pis no need anx R to be in place,