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Panasonic DVD-S25 won't play DVD

Discussion in 'Electronic Repair' started by Rich, Oct 5, 2004.

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  1. Rich

    Rich Guest

    Hi All,

    This multiformat DVD,CD Audio, SVCD, etc format, plays all formats
    except the proper DVD.

    When DVD disk is inserted, it keeps searching and returns noPLAY.
    Tried several DVD's to make sure.
    Tried a VCD and worked fine. Audio CD's play fine too.

    The unit is still under Panasonic parts warranty, but the labor may be
    more than the cost of new unit.

    Anyone seen this happen?

    Regards,

    Rich
     
  2. b

    b Guest


    Have you tried opening the unit and cleaning the lens (gently) with a
    q tip and pure alcohol? this solves 99 percent of read errors......
    Ben
     
  3. Rich

    Rich Guest

    ----- Original Message -----
    Thanks Ben,

    Yes, have done that rightaway, but made no diff. The unit has seen
    very little use - at most a dozen DVD have been played on it.

    Rich
     
  4. BULLSHIT. I've been doing this professionally for many years and while
    cleaning does often help with cd players, it's MUCH more rare for it to help
    on DVD players. The pickups die like flies on dvd's, and that is likely the
    OP's problem.

    Mark Z.
     
  5. Rich

    Rich Guest

    Hi Mark,

    If the pickup died, would that not keep any format from playing? In
    my case CD's do play fine.

    Rich
     
  6. b

    b Guest

    Bullshit? maybe to you.
    In my experience the vast majority of dvds rejecting discs etc can be
    repaired through careful cleaning. I've seen only a handful of bad
    pickups over the years. So I disagree - it isn't as rare for it to
    work as you make out.

    So I stand by what I suggested to the OP - It is perfectly possible
    that his pickup failed, but what's wrong with cleaning first? Or I
    suppose you would immediately replace the pickup, and blow the
    expense?

    B
     
  7. Not at all. It's quite common to fail on DVD's and still play CD's. A shame
    pickup parts prices are so high while replacement of entire units so low.
    Makes go / no-go repair decisions problematical.

    Mark Z.
     
  8. Definitely my experience with Sony, Pioneer, Onkyo, Denon, Panasonic,
    Yamaha, etc. Glad your experience has been more positive. Sorry I was so
    bitchy.

    Mark Z.
     
  9. b

    b Guest

    No worries Mark
    Ben
     
  10. t.hoehler

    t.hoehler Guest

    Add Apex to that list. My cheapie Apex player developed thermal problems
    about a year ago, it would play fine for about an hour, then it would lock
    up or start mistracking. I punched a two inch hole in the top and put a
    cooling fan in, tapped into the +5 rail to run it. Now it plays on and on.
    Kludgey fix, but it works.
    Regards,
    Tom
     
  11. jakdedert

    jakdedert Guest

    I had the opposite problem on a Magnovox unit. It was intermittant for
    about six months before it quit playing CD's, but continued to play DVD's
    normally. Eventually even that failed.

    Turned out to be (I think) poorly seated ribbon cables...or cleaning. I
    don't know which, because I did both operations at one sitting...opened it
    up and reseated every ribbon I could find, in addition to cleaning the
    lense. Over a year now...no problems whatsoever. Given the intermittant
    nature of the symptoms--and the complete alleviation thereof--I lean more
    toward the cables being the source; since the environment has not changed at
    all.

    I also have a very old Magnovox full-sized VHS camcorder (bought used, over
    ten years ago) which fails entirely every two or three years. The same
    treatment has always restored it's full functionality, although it's in need
    of attention again....

    jak
     
  12. So what's the fix for the camcorder?

    WT
     
  13. jakdedert

    jakdedert Guest

    Same as the DVD: remove and reseat all the ribbons. I thought I made that
    clear....?

    I guess not.

    jak
     
  14. Oh, sorry. I read it as the same thing you do to the camcorder each time
    fixes it, not that the same thing you do to the DVD player fixes the
    camcorder. Thanks.

    WT
     
  15. jakdedert

    jakdedert Guest

    Do you have a dead one? In my case it was desparation. I wasn't gonna
    spend any money on the old relic, but the kids use it occasionally; and it's
    nice to be able to pop a tape out of it which works immediately in anyone's
    VCR. We had an important annual family party that particular night, and the
    wife really wanted a record of it...so I pulled the myriad of screws that
    hold it together and looked for obvious flaws.

    Seeing none, I decided to go ahead and perform the process of reseating
    everything (just in case) and voila': functional machine...few years later
    it died again, I went through the same process (this time I cleaned the tape
    path as well--being fairly confident that it would work), and again
    everything worked fine.

    It needs it again....

    jak
     
  16. Ken G.

    Ken G. Guest

    Never use alcohol to clean anything.

    I work on alot of new DVD players ( store returns ) of all kinds and
    maybe 1% work after a lens cleaning .

    Having so many on hand i try switching lazor assemblies and that normaly
    fixes the problem .. other times its the driver board
     
  17. Rich

    Rich Guest

    Sounds like contacts on the laser assy plug get some film on them.
    Switching them around just rubs off the oxide.

    I have never removed the laser assy (not a tech), but don't you have
    to align them in any way? I'd be tempted to just pull it out and put
    it back in, if that's possible. I'm the OP in this thread.

    Regards,

    Rich
     
  18. If one is just swapping, then normally you'd swap the entire, pre-aligned
    mech. Additionally, some newer DVD player have all or mostly software
    adjustments, even auto-adjustments.

    Mark Z.
     
  19. hungcd

    hungcd Guest

    Hello
    Try this:
    -Initialize the player .Method : press and hold PAUSE SKIP/SEARCH<<
    OPEN/CLOSE buttons on the player
    -check the laserdrive current .Method:with no disc in the player,press
    DISPLAY button on the remote control while pressing PAUSE and
    OPEN/CLOSE buttons on the player.If the value is more than 70 (mA)
    ,replace the optical pickup
    I've meet many cases with this problem and after initialize ,80%
    work ok,about 20 % require Optical Pickup replace.I thinh this is a
    software fault problem !?
    Hope this helps.

    Vo Hung from Vietnam
     
  20. Bradley26

    Bradley26 Guest

    You all may know this, but I found that a video camera, like the small PC
    camera can see the laser beam very well, when the laser appears off by eye.
     
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