LG 55EC9300 OLED TV has no picture or audio
I'm hoping to revive this thread a little as I have the same model LG and similar problem but not exactly . I have 3.5v standby power @ p201 proper pins but no 12 or 24v when power switch is pressed or not. When I press power switch I can hear relay(?) clicking and then immediately clicks again. The remote will also generate the same click. Standby light stays on steady at all times, but no screen action or audio. I've checked the 3 onboard fuses as well. The tv pretty much quit working suddenly with no issues leading up to failure. Any guidance as to logical next check ?
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@pdb82581 that is the good thing about iFixit. We don't do threads. Here it is about individuality. WE try and answer people's specific question to their specific device. This allows us to focus on the device and it allows the OP to interact with their repair. That way nothing gets lost in the sea of the "Me too" comments you will find in other forums. To make it work, it is important that the OP comes back to their question so that any question should get resolved. No, not every device will be fixed but we darn well try to fix this planet one device at a time. We all know that sometimes live happens and things do get away from us. After all, we are all volunteers that try to help each other.
Anyhow, we will need to see your boards as well as how they are mounted on the inside of your TV. Those pictures need to be well focused since we most likely will have to zoom in close to check certain things :-)
The clicking of the relay means you are getting power but "something" prevents it to turn the TV on. Could be an issue with the relay itself, the power board or an error code somewhere in between. I have not had an opportunity to check but I assume you TV has a main board that integrates the T-Con circuitry. See if there is some sort of "_err line" between the mainboard and the power board.
在已经存在的问题里加入图片
由 oldturkey03 完成的