ivan_z
New Member
Last Activity: 12-27-2023, 08:35 PM
Joined: 10-25-2023
Location: Mountain View
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Update: I decided to buy a used tcon board on ebay and give it a try. It's about $40, ashipped all the way from China. Will keep you updated. -
Yes, 12v was present on that pad, and I got the garbled screen, as I already posted.
Just in case, I wired 12v from the PSU to the 12v-input-from-the-main-board on the tcon board (as you ask), and repeated the test. The result is eactly the same: garbled screen.
Interestingly, the garbled image appears when I connect the 12v jumper wire, and then remains on the screen even if I remove the wire. -
Diah, I can't execute your test:
If the tcon board is connected to the main board (as you ask), the tv refuses to start: when powering it on, a relay clicks on, and a second later off.
Same happens if the tcon board is powered (24v from the power supply) or not.
If I disconnect the tcon board from the main board (via the black robbon cable), the tv starts up fine, but, obviously, the screen is dark.
I also did the test that Davi.p asked, see my reply there.Last edited by ivan_z; 12-26-2023, 08:03 PM. -
Thanks for guiding me!
Done. See the attachment.
I found a 12v pad near the t-con connector on the main board, traced it to the t-con board, then hard-wired it with a jumper cable. I hope that's the same 12v as the one on the power supply board...
The picture looks a bit different, but is still garbage.
Also: previously at every power-on the pictured looked a bit different, now it always shows this very same picture....Last edited by ivan_z; 12-24-2023, 09:27 PM.Leave a comment:
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LG OLED 55EG9100: is this screen damaged?
Merry Christmas everyone!
I got this TV for free, hoping that I would be able to fix it. So far I can't....
The previous owner claimed that the screen is good, the TV has never been hit or dropped or anything like that; physically the screen does look intact.
Symptoms:
When I press the remote, a relay inside it clicks and a second later clicks again (refuses to power on).
When I disconnect the black ribbon cable from the main board and the tcon board, the tv refuses to run from the remote nor from the "on" button underneath the screen,...Last edited by ivan_z; 12-24-2023, 03:02 PM.
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