Good day folks. I'm asking for a bit of advice on an issue I haven't really faced before: I've got a Samsung telly which experiences ghosting, meaning the picture is "slow" to refresh and leaves behind trails or afterimages. The OSD and other still images display fine, but moving images leave behind trails, sort of like when the subject moves away quickly when a film camera snaps a picture. The quicker the transition, the more noticeable the the effect becomes. I tried taking some pictures of the screen myself just to give you an idea of what it looks like, though it's not AS severe as the camera makes it look.
I wasn't even sure what the guy was talking about, because when he brought it in, out of convenience, I first hooked up a laptop over HDMI and the picture was perfect, even the fast moving scenes which he said were all blurry, so at first I was like "WTH is this sh!t ? What's he talking about?". However, when I finally connected the cable, I could indeed notice some blurring going on. It was subtle at first, but the more I watched, the more apparent it became. I thought something was wrong with the main board, or more specifically the tuner, so I figured that replacing the board would take care of both the tuner and other components which may be acting up, but turns out I was wrong: I was just about ready to order a new one, but I stopped just in time, because I didn't want to get it and then find out the issue is something else in that 1% "others" category, so I was ready to bail out and warned my client that a new board may not necessarily solve the issue, but luckily he said he happened to own a second identical TV which works fine which he could bring in so we could swap board around until we'd isolate the fault. It's a good thing I didn't order the board I originally had in mind because even with the main board off the "donor" TV, the ghost image was still there...my diagnosis was incorrect. It was the T-con board all along, because I swapped it as well and the picture was now fine on the "faulty" TV, while the "donor" TV was now having the issue, since the faulty T-con was on it. Such a weird problem, isn't it ? HDMI appears perfect (or it could be ghosting too indeed, but I didn't notice), but cable has this afterimage effect...how does that come down to the T-con board anyway ? I would've suspected the T-con if the effect affected everything, including the OSD and still images, but it only seemed to happen on TV, that's why I scratched it off the list initially. It could be the way the signal is processed or the difference in resolution or something down to the nitty-gritty of the workings of the T-con. Anyway, I know know what's causing such a problem, so hopefully it will help others down the track too so they don't spend time and money ordering main boards, the issue so I will be ordering a new T-con since I was lucky to find it in the same place where I was going to buy the main board, so the mystery is technically solved, but of course in the quest for constant learning about even the most tricky and obscure aspects of TV troubleshooting which is the heart of our wonderful community
, the question still remains: what could be causing this issue on a T-con ? Has anyone experienced this before ? Is it even repairable (probably not or not worth the headache).
I wasn't even sure what the guy was talking about, because when he brought it in, out of convenience, I first hooked up a laptop over HDMI and the picture was perfect, even the fast moving scenes which he said were all blurry, so at first I was like "WTH is this sh!t ? What's he talking about?". However, when I finally connected the cable, I could indeed notice some blurring going on. It was subtle at first, but the more I watched, the more apparent it became. I thought something was wrong with the main board, or more specifically the tuner, so I figured that replacing the board would take care of both the tuner and other components which may be acting up, but turns out I was wrong: I was just about ready to order a new one, but I stopped just in time, because I didn't want to get it and then find out the issue is something else in that 1% "others" category, so I was ready to bail out and warned my client that a new board may not necessarily solve the issue, but luckily he said he happened to own a second identical TV which works fine which he could bring in so we could swap board around until we'd isolate the fault. It's a good thing I didn't order the board I originally had in mind because even with the main board off the "donor" TV, the ghost image was still there...my diagnosis was incorrect. It was the T-con board all along, because I swapped it as well and the picture was now fine on the "faulty" TV, while the "donor" TV was now having the issue, since the faulty T-con was on it. Such a weird problem, isn't it ? HDMI appears perfect (or it could be ghosting too indeed, but I didn't notice), but cable has this afterimage effect...how does that come down to the T-con board anyway ? I would've suspected the T-con if the effect affected everything, including the OSD and still images, but it only seemed to happen on TV, that's why I scratched it off the list initially. It could be the way the signal is processed or the difference in resolution or something down to the nitty-gritty of the workings of the T-con. Anyway, I know know what's causing such a problem, so hopefully it will help others down the track too so they don't spend time and money ordering main boards, the issue so I will be ordering a new T-con since I was lucky to find it in the same place where I was going to buy the main board, so the mystery is technically solved, but of course in the quest for constant learning about even the most tricky and obscure aspects of TV troubleshooting which is the heart of our wonderful community
, the question still remains: what could be causing this issue on a T-con ? Has anyone experienced this before ? Is it even repairable (probably not or not worth the headache).
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