▲ 1 r/LGOLED

LG OLED E9 Power: PWR & 12VT ON, 12VM=12V & 20VS=20V, but DRV OFF & 22VD=0V

LG OLED E9 red LED flashes 3 times, no video/no audio.

Measured Power Board:

Fuses   0Ω
ICL-05  5Ω

Measured P201 Power to Main Board:

PWR-ON  3.3V  = Vcc Circuit On
12VT-ON 3.4V  = 12VT Circuit On
DRV-ON  0.7V  = 22VD Circuit Off
12VM    12V
20VS    20V

Measured P251 Power to Module

12VT  12V  as expected per 12VT-ON = ON
22VD  0V   as expected per DRV-ON = OFF

But does DRV-ON OFF indicate to replace the Power Board or Main Board?

reddit.com
u/Logical-Hawk8 — 2 months ago

LG OLED E9 Power: PWR & 12VT ON, 12VM=12V & 20VS=20V, but DRV OFF & 22VD=0V

LG OLED E9 red LED flashes 3 times, no video/no audio.

Measured Power Board:

Fuses   0Ω
ICL-05  5Ω

Measured P201 Power to Main Board:

PWR-ON  3.3V  = Vcc Circuit On
12VT-ON 3.4V  = 12VT Circuit On
DRV-ON  0.7V  = 22VD Circuit Off
12VM    12V
20VS    20V

Measured P251 Power to Module

12VT  12V  as expected per 12VT-ON = ON
22VD  0V   as expected per DRV-ON = OFF

But does DRV-ON OFF indicate to replace the Power Board or Main Board?

reddit.com
u/Logical-Hawk8 — 2 months ago