Question about Samsung HCL4715W 47" Rear Projection Television

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See lines in HD cable or DVD source images, also maybe a problem w/ color, see extra blue haze

Model: HCL4715W Service Model: HCL4715WX / XAA Ok, I don't know what I'm talking about here. TV was fine earlier today, then suddenly the cable image looked funny, could see lines in the screen was the first thing I noticed. I figured my daughter accidentally hit the 'zoom' image or something, and didn't have time to look at it. Now, coming back home, and looking at it again, not only is there lines in the screen, but the picture is a bit hazy w/ extra blue being seen as a shadow to the main images. Checked the cables, ran a DVD and had similar problems, so it's not the cable box, or the cables. I've seen this kind of problem before, at least w/ the color, only to realize in sliding the tv around one of the 3 component color cords was coming loose, pugged it back in and it fixed problem in the past... but that's not the case now... I recently re-wired everything adding a receiver, but was still sending the video images via component cables in each case from the DVD and the HD Cable box directly into the TV, so I can play music on the receiver while still watching TV, so it's not a problem w/ the receiver. I tried the perfect focus, but that didn't do anything. I looked at the convergence thing, but don't really know what to do with it. The TV is almost 5 yrs old, maybe I have a bad bulb or something? Any troubleshooting tips to try to narrow it down, and hopefully fix it cheap myself???? Thanks, Karz

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  • zearles Nov 30, 2007

    I have a Similar Problem. All of my colors are off and there is a white line across the top. We believe it is the convergance chips but we aren't 100% sure. Anyone have any ideas?

  • karz10 Dec 30, 2007

    No help on this yet eh?

    Still have the issue... I don't think it's the convergence issue for me, I have seen the convergence problems w/ pics on other forums, and they have bowed lines in their red/green/blue and multi layer images, I don't have that problem.

    I just have lighter images ghosting to the right over darker images and a loss of resolution (like maybe line doubler isn't working anymore?)

    Any one have any ideas? Or is this just a ploy to pay for some upgraded service w/ unknown results?



  • karz10 Feb 23, 2008

    Well, I didn't want to spend $400+, even $300+ on such an old TV, if there was any way possible to avoid it. Considering it's only a 47" rear projection, I would rather have a similar sized plasma, or a bigger DLP RP, for a little more money. But that's just me. I found another thread where a guy had the same blueish shadows and did fix it when replacing the whole convergence board bought on for $85, so I took the plunge and bought it, and swapped it out. I'm about 85%-90% to new condition now.

    Only reason I'm not 100% is coz it seems my whites still *glow* a little more than they once did. The blue shadows are gone, and the resolution is back to 100% HD now, which is great, I just think the whites/light colors glow outside their lines a little bit. Since the tv's image was so messed up for so long, prior to finding the fix, I can't tell anymore if it was like that before, or when the other problems came up, this also happened, or if the new board is actually causing a new problem, but I guess I have no way to no for sure, and not much recourse if it was, at this point.

    If money was no object and I loved this tv, I'd pay to have it fixed. But since I'm not in love with it long term, it was worth $85 for the part and some of my time to fix it close to 90%.




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It sounds like convergence problem to me. There are two ways to correct these concerns; Samsung does sell boards, so if you are handy you can replace the boards yourself. BUT I recommend calling a factory authorized service company. It isn't costly, the cost will run around $400 -$550.

Posted on Feb 23, 2008


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