Hello! I have a beautiful 30" LG W3000H lcd monitor which I used up until 2 or 3 years ago: then it started flickering along with portions of the picture moving up and down on their own.
Brought twice to an LG repair centre, the final diagnosis was "it's the panel", and of course the panel was more than a new monitor.
Bit the bullet and bought another monitor, but didn't throw away the LG as I hoped to fix it one day.
Fast forward to today: I suspected the tcon, so bought a replacement on aliexpress for the pricey sum of 30 dollars, and it seems to have fixed the flickering problem! Unfortunately, it exhibits another issue: the picture is split vertically in the middle and is shrinked and duplicated on the left and right side: it's like on the left side of the monitor it displays only even columns while on the right only the odd ones. I noticed that the tcon I received is slightly different from the original, it has the same code (LM300WQ5-STA1 6870C-0183D) but some resistors close to the flat ribbon connectors are soldered in different positions, and there's a small chip and a bunch of resistors missing elsewhere.
Now I know that the panel is fine, and I ordered another tcon (for 20 dollars this time) that looks to be identical (the code is actually different, 6870C-0183E, but the resistors layout is the same). If I succeed, that will be 3 or 4 years to fix a monitor!
Failing that, is there a way to trick it into displaying the picture correctly? Maybe swapping some wires in a DVI cable?
Thanks!
Brought twice to an LG repair centre, the final diagnosis was "it's the panel", and of course the panel was more than a new monitor.
Bit the bullet and bought another monitor, but didn't throw away the LG as I hoped to fix it one day.
Fast forward to today: I suspected the tcon, so bought a replacement on aliexpress for the pricey sum of 30 dollars, and it seems to have fixed the flickering problem! Unfortunately, it exhibits another issue: the picture is split vertically in the middle and is shrinked and duplicated on the left and right side: it's like on the left side of the monitor it displays only even columns while on the right only the odd ones. I noticed that the tcon I received is slightly different from the original, it has the same code (LM300WQ5-STA1 6870C-0183D) but some resistors close to the flat ribbon connectors are soldered in different positions, and there's a small chip and a bunch of resistors missing elsewhere.
Now I know that the panel is fine, and I ordered another tcon (for 20 dollars this time) that looks to be identical (the code is actually different, 6870C-0183E, but the resistors layout is the same). If I succeed, that will be 3 or 4 years to fix a monitor!
Failing that, is there a way to trick it into displaying the picture correctly? Maybe swapping some wires in a DVI cable?
Thanks!
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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