LG 55EG9600 Training page 8

55EG9600 "OLED Compensation Details"
POWER_OFF_BY_INV_ERROR (Cracked or Burnt Panel) See Service Bulletin GLZ201600040:
Service Bulletin describes the process for the need to update the Software to 04.20.75 if INV_ERROR happens randomly.
It also describes how to "Unlock" the Main board if (when attempting to turn on the TV) the Power LED blinks 10 times.
Remember, if the Main board is locked, it is locked permanently. It must be reset to work again, in any TV.
Details to bypass Burn detection "INV_ERROR and unlock the Main board found in Service Bulletin GLZ201600040.
POWER_OFF_BY_20V_DETECT (Panel 24V is loaded down):
The 24V which is routed to the T-CON board then to the Panel is monitored by the T-CON board. If this voltage is missing, (Example:
Loaded Down) the T-CON sends back a command EL_VDD_DETECT_22V (high) to the microprocessor pin 44. The Micro shuts off the
TV and then logs 20V_DETECT in the Power Off History screen. Measure the 24V to the T-CON, if missing unplug the panel from the T-
CON board and retest. If it returns, the Panel is defective. If not, check the Power Supply. (See 55EG9600-SMPS-Testing)
POWER_OFF_BY_20V_DETECT (Power Off because AC Power disappears During Run):
Indicates a loss of "AC". Because the 20V/24V to the T-CON (used by the Panel) drops faster and is detected quicker than the 3.5V
which is monitored for AC_DET.
Power Off History will look like the following;
POWER _OFF_BY_20V_DETECT
POWER_OFF_BY_AC_DETECT (Twice) (Power Off because AC Power disappears During Compensation):
If the AC Power is lost while the TV is performing Compensation, it will log AC_DET twice.
Power Off History will look like the following;
POWER_OFF_BY_AC_DET
POWER_OFF_BY_AC_DET
POWER_OFF_BY_COMP_END:
The Term "Compensation" entry into the Power Off History indicates Compensation has completed. Compensation is run every 2 hours
of consecutive run time when the TV is turned off. (See "OLED" in the In-Start menu for interval).
Tip: To know when Compensation is running, if a Jump Drive that has a power
LED is inserted into the USB port, it will remain lit when the TV is powered off.
When compensation completes, the Jump Drive LED will turn off.
Compensation is an internal program that utilizes an algorithm to determine the operational characteristics of the OLED panel individual Cells and then
compensate for changes that take place over time. This keeps the panel running at optimal performance.
November 2018 Page 07
55EG9600 (2015) In-Start Menu
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