I have an LG OLED 55EC930V.
The problem started a couple of days ago: tv working, but no video, only audio.
I opened the tv and I checked the parts. The mainboard has the red led on, which means that it working correctly. The power board supplies 24V correctly.
I focused my attention on the t-con board, LC550LUD-LGP1, I disconnected it to observe it carefully, no signs of damage. Then I mounted it again and I reconnected to the tv.
After this, the tv started to show a different behavior: it turns on and then, after few seconds, it turns off. I cnanot hear the audio anymore.
This happens in all the following different cases:
1- t-con board is connected to the motherboard and the power supply, but all the four ribbon cables to the panel are not connected.
2- t-con board is disconnected from the 24V power supply
3- t-con board is disconnected from the 24V power supply and the main board.
So my question are:
A- do you think that this behavior is normal? i.e. on a working tv if I disconnect the oled panel from the t-con board, does the tv stays on, or it turns off automatically? Does the t-con board have a system to detect if the planel is connected?
B- Can I safely assume that the only broken part is the t-con board? I'd be happy to replace it, but only if I am pretty sure that is the only broken part.
Thank you for the help.
Btw, can you recommend to me where I can find the replacement, besides eBay?
The problem started a couple of days ago: tv working, but no video, only audio.
I opened the tv and I checked the parts. The mainboard has the red led on, which means that it working correctly. The power board supplies 24V correctly.
I focused my attention on the t-con board, LC550LUD-LGP1, I disconnected it to observe it carefully, no signs of damage. Then I mounted it again and I reconnected to the tv.
After this, the tv started to show a different behavior: it turns on and then, after few seconds, it turns off. I cnanot hear the audio anymore.
This happens in all the following different cases:
1- t-con board is connected to the motherboard and the power supply, but all the four ribbon cables to the panel are not connected.
2- t-con board is disconnected from the 24V power supply
3- t-con board is disconnected from the 24V power supply and the main board.
So my question are:
A- do you think that this behavior is normal? i.e. on a working tv if I disconnect the oled panel from the t-con board, does the tv stays on, or it turns off automatically? Does the t-con board have a system to detect if the planel is connected?
B- Can I safely assume that the only broken part is the t-con board? I'd be happy to replace it, but only if I am pretty sure that is the only broken part.
Thank you for the help.
Btw, can you recommend to me where I can find the replacement, besides eBay?
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