Connect with us

Phillips DVD Player Not Reading DVDs, ejects with no read

Discussion in 'Electronic Repair' started by [email protected], May 15, 2006.

Scroll to continue with content
  1. Guest

    My 4 year old Phillips DVD player fails to read any DVD. Happened
    without warning. It indicates that it is reading the DVD, it seems to
    be trying to seek to a starting position, but never fully spins up the
    disk. After 2 minutes or so, the DVD is ejected. No message.

    What do you all think: cleaning or throw away?

    Thanks
     
  2. Arfa Daily

    Arfa Daily Guest

    Cleaning is unlikely to help unless the player lives in a very smoky
    atmosphere. Dust on the lens is rarely a problem with DVD players, due to
    the much higher disc rotational speed, which tends to keep the dust blown
    off.

    4 years is about right for a worn out laser. Does it still play CDs ok ? If
    it does, this is usually, although not 100%, a good pointer to laser
    trouble.

    Arfa
     
  3. FirstFlight

    FirstFlight Guest

    Thanks Arfa. Great input. I'll go buy one and put this in the
    crusher:).

    Chris
     
  4. b

    b Guest

    i have 'repaired' numerous dvd players by cleaning them.Don't listen to
    those who say it won't work - just try it anyway, what have you to
    lose? this is a repair group after all.

    if its a philips machine, the only hitcvh may be that you'll probably
    need the special hexagonal driver to get the case open! may mean a trip
    to a local hardware store.
    regards,
    b.
     
  5. Guest

    gosh.... cleaning is so damn easy..... why didn't you clean it before
    you posted your question?
     
  6. Arfa Daily

    Arfa Daily Guest

    I'm glad to see that you put the word " repaired " in inverted commas.
    Presumeably, this is to indicate that you are using it in the loosest
    possible connotation. I repair DVD players for a living - hundreds of them
    from all manufacturers and, whilst you may, on one occasion out of a
    hundred, get a fix from cleaning the lens, it won't be a long term one.

    If you read my reply properly, I didn't say that it *wouldn't* work, only
    that it was *unlikely* to work, which I'm pretty sure that most on here -
    and you too if you are realistic - would agree is an honest representation
    of the situation.

    Of course the owner should try cleaning it - it's a fundamental try, but I
    stand by my original opinion that it is UNLIKELY to effect a ( lasting )
    repair.

    And the special ' hexagonal driver ' is called a Torx driver.


    Arfa
     
  7. b

    b Guest

    Arfa Daily ha escrito:
    ....that was because I didn't consider the machines in question broken.
    Disagree. I still have 3 machines which I restored in this way going
    strong after 4 years, 4 years and 3 years respectively. (Philips, Sharp
    and a no-namer) plus another I gave to a friend last year which I
    believe is still operating fine.
    I know the laser pickups commonly fail, and in a high proportion of
    machines the power supply is the other main culprit. Ribbon cable
    failures resulting in 'no disc' errors I have seen a few times of late
    too. However, the point I was trying to make is that as with any
    optical device, cleaning is critical to proper operation and is a
    common reason for failure.
    ....certainly is a 'fundamental try' (sic), especially for a
    non-technical person who would doubtless be able to do little else.
    more so if the unit isn't used that often (in which situation, your
    theory as to the dust being blown off is flawed). Hence: cleaning is
    worth a try before condemning it to the landfill. Since the OP wanted
    to choose between 'cleaning or throw away', I just think you should
    have put that more clearly in your post, it might have been more
    helpful.
    Ok Ok, let's not get all defensive! ;-) I do take your point though
    that dvd players tend to fail more due to psu and laser failure.
    but ....(lasting) repair unlikely - why not? experience shows it's
    perfectly possible, especially if the laser unit was OK and dirt really
    was the cause of the problem, in which case there's no reason why the
    unit couldn't go on working for another few years, at least 'till
    cleaning is required again!

    -B.
     
  8. Arfa Daily

    Arfa Daily Guest

    All-righty. I guess we could argue about this all day - and I've got lasers
    to change ... !!

    The reason that I said that any fix produced by cleaning was unlikely to be
    lasting, is because if dust has managed to settle on the lens - and the
    rotational speed of the disc *does* produce a very strong wind at the lens,
    trust me on this, I have it on good authority from a manufacturer whose
    training course I did - then there will certainly be dust settled on the
    critical angle mirror and the face of the pickup diode array. And before
    someone says that in some laser arrangements, the pickup diodes are not flat
    in the bottom of the optical block, I know this ...

    Any dust on the internal optics will not be able to be removed by any
    cleaning method commonly employed in workshops. Thus, any improvement
    achieved by cleaning the optics that you can get at, is likely to be
    compromised in the long term, by the dust that you can't.

    I used to clean the lenses on DVD players, with varying degrees of success -
    initially - but an awful lot of the ones that seemed to be cured, came
    bouncing back a couple of months later, in trouble again. This often results
    in an irate customer, and more so if the warranty on the repair has just
    expired. Is it worth it ? For the same reason, these days, I seldom rely on
    just cleaning of CD lasers. Most are so cheap, that you may as well just
    replace them, rather than risk losing a customer. Of course you will be able
    to find exceptions that prove the rule, and I'm sure that there are ones
    that I've cleaned, which are still going strong.

    However, if dust has settled on the pickup diodes, the output balance is
    quite likely to be affected, unless there is a perfectly even layer of dust
    across the whole array. There is a limit to how much slack can be taken up
    by the servo circuitry, even on players where this is done automatically.
    DVD is a technology that works by the skin of its teeth, with a fair wind
    behind it. It doesn't take much upset in the system to compromise this.

    Again, I didn't tell the owner not to clean it. He asked if he should, and I
    merely told him that it was unlikely to effect a cure. Perhaps he can tell
    us if it did any good ? If it did, fine. If it's then still going in a few
    months - better. He will have been one of the lucky ones. But to everyone
    else reading this, I still stand by what I said, for the additional reasons
    given.

    As far as power supply trouble goes, I would agree that this is also a very
    common failure area, but in the case of Philips machines, it's ( almost )
    invariably a short circuit secondary rectifier, which results in the psu
    going into cyclic shutdown, giving a machine that's dead, to all intents and
    purposes, rather than one that's just refusing to play discs.

    Didn't you like " fundamental try " ? I was using the phrase in a sort of
    'spoken speak' rather than 'written speak' ... conversational maybe ?
    d;~}

    Arfa
     

  9. My standard advice for most Philips products.

    ;-)


    (Pioneer dvd players last longer on the average.)


    Mark Z.
     
  10. Arfa Daily

    Arfa Daily Guest

    Odd that, isn't it Mark ? I can't recall ever replacing the laser ( or
    having to clean one .... !! ) on a Pioneer DVD, nor having to scrap one.
    Their CD players and lasers are equally long-lived.

    Arfa
     
  11. I've replaced a few - but considering how many units Pioneer sells, I think
    their failure numbers are low.

    Mark Z.
     
  12. webpa

    webpa Guest

    Other than esthetics, it is hard to imagine a repair requiring a
    screwdriver to be worthwhile. So if a "lens cleaner disk" doesn't solve
    the problem, it is likely that the mains cord and the screws holding
    everything together are worth much more than the machine as a whole.
    Furthermore, a current machine will probably play many more types of
    disks, and do it better. All this for US$30 or less....
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-