Dumb Sony Rdr-gx3 Fan Stays On For Pdc

Discussion in 'Blu-ray & DVD Players & Recorders' started by bluesfan, Oct 25, 2004.

  1. bluesfan

    bluesfan
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    When I set a timed recording with PDC the unit can be shutdown but the fan stays on. Whereas a timed recording WITHOUT PDC does not require the fan to be on.

    Since PDC scanning (to change prog start time) generates no heat why does the fan need to be on.

    If I set a recording for 5 days time the fan runs for 5 days before the recording starts!!!!!!!!!!!!

    Of course Sony support are zero help. The people they employ know nothing about electronics.

    Can anyone explain or is this just dumb Sony?
     
  2. bluesfan

    bluesfan
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    Anyone else with gx3 confirm?
     
  3. PhilipL

    PhilipL
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    Hi

    This isn't the behaviour with PDC on the Pioneer units. Not sure if it is a fault with your Sony or how they have been programmed it to operate.

    Regards

    Philip
     
  4. bluesfan

    bluesfan
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    Can any gx3 users confirm how their's work. I'm starting to think it only comes on if the recording is within the next 24 hours. Am currently testing.

    The point of this is I don't want a fan that wears out unnecessarily.
     
  5. mrtbag

    mrtbag
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    Did Sony support not say Yes or No as to whether it is normal?
     
  6. bluesfan

    bluesfan
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    They said normal but they'll say anything just to get rid of you. Other make of DVD recorder don't do this and I can't see how scanning PDC signals require the fan to be on. I'm still testing to see if certain configurations cause this. Do you have an gx3? Does it do the same.
     
  7. mrtbag

    mrtbag
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    Apparently this is 'normal'. There is a circuit that scans for the PDC signal, and this circuit is the item the fan wants to cool. Solution : Don't use the PDC!!
     
  8. bluesfan

    bluesfan
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    But no so with other makes.

    I've not gotten to the bottom of this. It does not appear consistent. Yesterday it shut off last night but was running this morning for a PDC recording to start Thursday.

    If I don't use PDC sometimes chunks of a programme are not recorded.
     
  9. eddyad

    eddyad
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    You're lucky - I don't use PDC because I DO lose chunks of programs. Seriously, I have found it uneliable many times and now with digital TV it doesn't work anyway. I just start a minute early and end 5 - 10 mins late depending on channel. ITV 1 is worst for punctuality.
    Can't win 'em all.
     
  10. PhilipL

    PhilipL
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    Hi

    While PDC is an excellent specification (even allowing the TV companies to reprogram a timer setting for a different channel and day remotely!), it hasn't been implemented the same way by all the TV channels, and testing by the manufactures has been made against these "lite" implementations that then causes a problem when the implementations change. The TV companies also do not follow the rules in terms of the TV schedules and published times so many people have found PDC unreliable.

    This is due to a validity window, i.e. so far ahead the recorder will not bother to scan the channels until a certain time in advance. Due to the way PDC is implemented different channels will cause different behaviour. For example: a specific stop code is given by some channels that says, "This is the very end of the program, all done" and so the recorder knows that's it and stops scanning, other channels do not so the recorder will keep looking for the recording signal again in case the program comes back while in the validity window.

    Either way the Sony should not need a fan running, that is just bad design.

    Regards

    Philip
     
  11. bluesfan

    bluesfan
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    Thanks Phil

    Just what I thought. As far as timings were concerned I suspected it was a conspiracy to make us watch more ads. Now they're not going to fix something that makes us watch more ads are they?
     
  12. bluesfan

    bluesfan
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    SONY REPONSE.

    I can assure you that I fully understand the question that you have
    raised,
    although by looking at my previous reply I can understand how you
    could
    think I misunderstood the question. For that I apologise.

    As the RDRGX3 is scanning for the PDC signal so that it knows when to
    start
    recording exactly, the unit must stay active. While the DVD recorder
    is
    active, the fan must stay on. I hope that this has clarified the
    issue for
    you.


    LAST SONY RESPONSE.

    Thank you for your recent enquiry and for your comments.

    It would appear that you opinion differs from that of our designers
    and support engineers. I have forwarded your comments to them for
    their perusal, however, this will not generate a further direct
    response to yourself.

    Please accept our apologies for any further disappointment this reply
    may cause.
     
  13. PhilipL

    PhilipL
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    Hi

    :) Quite likely, however I find that anything on ITV/CH4/CH5 on PDC only starts recording the moment the program starts, but doesn't end until the next program starts, so you get the ads in the middle (although PDC does provide a way of pausing for ad breaks it has never been used to remove the ads between the program) and then ones at the end.

    Regards

    Philip
     
  14. bluesfan

    bluesfan
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    I heard this was available on some vhs machines but no one has put it in a dvd recorder.
     
  15. jamils

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    Hi, I've registered on this forum just so I can thank you all for the no PDC/no fan tip and the (inevitable) not-very-helpful response from Sony tech support.

    I hope turning off PDC works for me, I'll try it tonight.

    The fact that the fan stays on when the timer is set is a bit rubbish. It would be ok if the machine started scanning only 1hr before the recording, but all the time is unacceptible.

    It has to be said that the Sony is a great machine - solid as a rock. Before I decided on the Sony I tried the Kiss DP-558 and the new LiteOn LVW-5045. Both had loads of problems and bugs, the main one being A/V sync problems after only 20mins of recording.

    Cheers.
     
  16. jamils

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    It did work. Thanks.
     

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