I got this one this morning. The guy said his kid poured a glass of water down the screen and something got fried, and it's been in his storage locker for about 2 years. Was only 3 months old when it happened. I honestly figured it was just a bad panel and the guy was blaming his kid. But, it would appear that he was correct. When I first opened it, I did the routine checks for TAB failure. Flexing the panel didn't work. Disconnecting the right side ribbon cable from the Tcon did. One side came to life. Getting to the panel buffer boards was very easy. In fact, I've never had a TV where they were this easy to get to. The metal frame, which holds the panel, was 4 separate pieces and the top could be removed without disturbing the rest. I always knew there was something I liked about LG.
The first pic is what I had when I started. Just a blank screen. Second pic is the corrosion damage caused by the water. I had to pull 5 caps from the left side board to identify them. All said and done, I replaced 5 bad caps and 6 open 100Ω resistors. Now, as I said though, aside from the resistors, I first took from the good side. I wish I would have taken a pic of what I first saw when testing my repair with only the right side ribbon cable connected. It didn't look good. It was a bunch of vertical lines. I thought for sure the panel was bad. I almost gave up, but I thought maybe the Tcon may have been damaged too, so I continued. Having no place local to buy replacement caps, I resorted to pulling them from scrap boards, mostly buffers. I have a box full of them which I someday plan to recover gold from (probably only need about 1000 more to make it worth it, lol). Anyway, the resistors were easy to find. The caps, not so easy. I pulled about 100 to get the 5 I needed. Well, to be fair, I had to find 7 because I dropped 2. About 4 hours later, still better than waiting 3-5 days for mail order, I connected the left side ribbon cable, plugged it in, and the snow on the screen brought an instant smile to my face. Strange how it will work with the right side disconnected, but not with the left disconnected. Anytime I fix a TV and it's bigger than my current one, and of equivalent or better quality, I upgrade. It's kind of like a tradition with me. And actually, not just with TVs. Almost everything I own came to me broken. My last upgrade, to a 47" LG, was about a year ago. Only problem now is the resolution is too high for my old laptop, which I use for streaming. Works with my good laptop, but I don't like the cord going across the room. I may have to get one of those Roku things, or a streaming BlueRay Player.
The first pic is what I had when I started. Just a blank screen. Second pic is the corrosion damage caused by the water. I had to pull 5 caps from the left side board to identify them. All said and done, I replaced 5 bad caps and 6 open 100Ω resistors. Now, as I said though, aside from the resistors, I first took from the good side. I wish I would have taken a pic of what I first saw when testing my repair with only the right side ribbon cable connected. It didn't look good. It was a bunch of vertical lines. I thought for sure the panel was bad. I almost gave up, but I thought maybe the Tcon may have been damaged too, so I continued. Having no place local to buy replacement caps, I resorted to pulling them from scrap boards, mostly buffers. I have a box full of them which I someday plan to recover gold from (probably only need about 1000 more to make it worth it, lol). Anyway, the resistors were easy to find. The caps, not so easy. I pulled about 100 to get the 5 I needed. Well, to be fair, I had to find 7 because I dropped 2. About 4 hours later, still better than waiting 3-5 days for mail order, I connected the left side ribbon cable, plugged it in, and the snow on the screen brought an instant smile to my face. Strange how it will work with the right side disconnected, but not with the left disconnected. Anytime I fix a TV and it's bigger than my current one, and of equivalent or better quality, I upgrade. It's kind of like a tradition with me. And actually, not just with TVs. Almost everything I own came to me broken. My last upgrade, to a 47" LG, was about a year ago. Only problem now is the resolution is too high for my old laptop, which I use for streaming. Works with my good laptop, but I don't like the cord going across the room. I may have to get one of those Roku things, or a streaming BlueRay Player.
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