Question about Samsung HLP5085W 50" Rear Projection HDTV-Ready Television

1 Answer

I have a Samsung HLP-5085W DLP TV and continue to get the circular display on the front panel indicating a problem with the lamp or other component. I unplugged the TV to install a home theater speaker system, plugged it back in and the unit has never came back-on. The projection screen remains blank. I have replaced the lamp, lamp-ballast and the color wheel to no avail and the fans are working. Are there any other simple fixes that I can try. The unit will try to reboot several times before shutting down and a 'click' is heard each time a restart cycle begins (or ends?). If you think it's the power supply or the DMD board, are there any You-Tube videos or tips for replacing those? Could there be a simple fix I haven't tried yet (circuit breaker, fuse etc.)?

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  • 8 more comments 
  • slusher17 Nov 08, 2010

    I have a 40-year old degree in ET which I've never actually practiced. I do have a basic knowledge of how things should work and if I could find a hands-on video or pictures, I'd feel a lot better about tackleing the project. I notice you didn't respond to the simple fix scenerio so I'm assumming there is none, correct? Also, what about the DMD board. Could that be a possible/probable cause?

  • slusher17 Nov 08, 2010

    are there any possibilities other than the power supply and DMD that could be causing the unit to remain in a standby mode? As cheap as their selling the HDTV's for in today's market, I don't want to tie up a 'small-forune' in something that's antiquated already. I understand the DMD board is expensive even for a self-installation.

  • slusher17 Nov 08, 2010

    I just pulled the power-supply board and it appears I may have a defective part. The number on the board lists the component number as "RY 8015". The piece is about the size of a resistor but I can't find a replacement with that number. Are you familiar with such an item? Could that be a coded number meant to represent a different part?

  • slusher17 Nov 08, 2010

    Tim, have you ever heard of an inline relay with RY8015? I googled RY6502 and found it to be an inline relay on the Power Supply board for a Panasonic TV (I think it was Panansonic)?

  • slusher17 Nov 08, 2010

    Tim, I'm sure the component wasn't a transistor. It was shaped very similar to a resistor with a single lead coming from each end. It has no base, cathode or emitter so it's not a transistor. It could be an inline relay or some sort but I can't find it even on the schematic.

  • slusher17 Nov 08, 2010

    I know what you mean. I'm almost 'beat-up' researching this RY8015. I wonder if Samsung Parts would have a 'handle' on it?

  • slusher17 Nov 08, 2010

    Tim, I wondering if this could be a coil? It seems very small to be a coil yet that is the only thing I can come up with. It's physically as small as the average resistor with about 4 or 5 red rings (the ring furtherest from the end could have been silver). Have you ever heard of such?

  • slusher17 Nov 08, 2010

    Yes, I agree and I think I will continue this tomorrow. Hopefully I will be able to wave the victory flag in the AM. You have provided excellent feedback for which I'm thankful. Maybe our solution will come tomorrow. I would like to keep this open until then.

  • slusher17 Nov 09, 2010

    9:30 PM! I found a schematic for the Power board and discovered the part I've been trying to find all day should have been a resistor (8.2M@1/2W) part #RY801S and not "RY8015". The "S" looked like a "5" and now that I know what I'm looking for, I should be able to buy the resistor, locally. If that doesn't fix the TV, I guess I'll have to call Samsung and buy the entire board.

  • slusher17 Nov 12, 2010

    Well, I've replaced the Power Supply board and I'm reading 360v going to the Lamp Ballast.
    With the lamp removed from the chasis, I attempted to measure the drop coming out of the
    ballast. I was having trouble getting my probes into the plugs on the secondary side of the
    ballast but I could never get any sign of an output voltage. I tried to measure the
    continuity of the lamp, itself, and kept reading an open circuit. I was told by a local tech
    that the lamp had to have 12,000 volts before it would turn on and that I was getting a
    reading from a cold lamp which would justify the open circuit. I wasn't aware of that.

    Okay, I've replaced the color wheel, the lamp ballast, the lamp and the power supply board
    and I still get the triangle icon with a lamp symbol when I try to turn the set on. As per
    the user's manual, in addition to signifying the possibility of a bad lamp, it could mean
    anything in the light-engine circuit (which, to my knowledge, I've replaced all the
    components).

    My volt/ohm meter will not read high enough to measure 12,000v but I was expecting the
    needle to jump when I placed it across the lamp ballast output. Instead, I got no sign of
    any voltage at all. I took the new lamp ballast out, replaced it with the old one but still
    the same results.

    This problem didn't occur until I disconnected the TV to hook up a Bose Cinemate home
    theater system. Once the Bose system was in place, I plugged the TV back in and the Samsung HLP5085W has not worked since. What else is there for me to check? If you're out of ideas, please pass this scenerio around to some of the other Techs because I'm out of ideas.

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I suspect it is a power supply, and has been the whole time unfortunately. I am not finding any videos for how to change it out, but it is not much more difficult than doing the color wheel and lamp ballast, if you can handle those I think you can do a power supply. Just get the new part, find the old part in the TV based on the new part... and pay attention to how to take it out.. it is not much more beyond that..

I am still checking for a video walk-through for it, or a site with step by step pictures.

Thanks, let me know if you have any questions or concerns, just reply to my answer here and I will be right back with you.

Tim

Posted on Nov 08, 2010

  • 6 more comments 
  • Tim Grayson
    Tim Grayson Nov 08, 2010

    The DMD board is also in the power chain, unfortunately it is possible it is that as well, but I'd say the power supply is most likely.

    Sorry about not addressing your simple fix issues the first time around, definitely there is no simple fix or anything to check beyond what you have already done, you have checked more things then I would have even thought of at this point..

    You will want to find some place that allows you to return the part(s) if you end up not needing them, that way when you get a power supply, if somehow you have the exact same issue you can get the DMD board, and try that as well. It's possible it could be the DMD and the Power Supply, sometimes when one goes they both get "taken out", but it is unlikely. But keep the power supply until you have the DMD board (in the event that the power supply doesn't fix it) and try just the DMD board, if still nothing try the power supply with the dmd board...

    Again though I would venture to bet that it's definitely the power supply.

    Thanks,
    Tim

  • Tim Grayson
    Tim Grayson Nov 08, 2010

    Unfortunately there really aren't other possibilities, well I guess maybe that is fortunate... at least we know what it isn't..

    But to be realistic I think you hit the nail on the head though, in my opinion you should just replace the TV... and you can sell this one for parts I'd bet. Put it on craiglist listing it as having the problem it does and someone will snag it I'd bet...

    Thanks,
    Tim

  • Tim Grayson
    Tim Grayson Nov 08, 2010

    I am trying to find the one with the 8015 as indicated as well and can't find hide or hair of it...

    Any similar transistor should work.. I am trying to find the specs on it for you..

    Tim

  • Tim Grayson
    Tim Grayson Nov 08, 2010

    I'm sorry I meant to say resistor, not transistor lol, been a long day :)

    Tim

  • Tim Grayson
    Tim Grayson Nov 08, 2010

    That was actually exactly what I was going to recommend, Samsung parts should be able to track down what exactly this item is. The number for their support is 1-800-726-7864 and they will have the information / number for how to get ahold of the person you need in parts. You will want some higher level person if possible, they average Joe answering the phones will have no idea about resistors or transistors..


    Tim

  • Tim Grayson
    Tim Grayson Nov 08, 2010

    I personally have never heard of a coil like that, but that definitely doesn't mean it isn't one. I am just perplexed that there is no mention / reference of it at ALL online, not one single place.

    Something very strange about that component there..
    Tim

  • Tim Grayson
    Tim Grayson Nov 08, 2010

    No problem, and thanks for the kind words. I definitely try to get right back with people immediately.

    It is open until you click that Accept This Solution button which should be below my answer here. Even then you can continue to reply and I will answer, but that just credits me as being helpful..

    Thanks
    Tim

  • Tim Grayson
    Tim Grayson Nov 09, 2010

    Ah why didn't we think of that! No wonder we couldn't find it....

    That's great news!

    Tim

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