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Pioneer 444 problem

Discussion in 'Blu-ray & DVD Players & Recorders' started by ColinHaldane, Sep 25, 2001.

  1. ColinHaldane

    ColinHaldane
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    I have a new 444 chipped player from Techtronics.com<br />I am suffering from a picture problem in the form of horizontal bands that can drift up or down.<br />On bright scenes you can't see them but on dark ones they're very annoying.<br />The problem is on RGB but not composite. I don't<br />know about s-video.<br />Has anyone experienced anything like this with other players?
     
  2. MattB

    MattB
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    Hi Colin, I can reproduce the problem you describe if I watch the composite output when RGB is selected.

    What you are seeing is the TV line clamp (dc restore) operating on picture information instead of the front porch. The position of the clamp pulse must have to change depending if you are looking at RGB or composite.

    This is not unusual! I have seen it on other DVD players and do not consider it to be a fault.

    So all you need to do is make absolutely sure you have selected RGB [on your TV] and not just plain old composite AV1. Composite video is usually given away by dot crawl on colour boundaries most noticable on computer generated images like menus - if you can see this you are not looking at RGB!

    PS is your Macrovision disabled and have you tried any RCE discs yet?

    Hope this helps,

    [ 25-09-2001: Message edited by: Kamakiriad ]</p>
     
  3. ColinHaldane

    ColinHaldane
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    Thanks for the info Kamakiriad.<br />I'm pretty sure that I have RGB selected on the TV - if I change the 444's output from composite to RGB there is an instant gigantic improvement of the picture quality which is of course 'computer generated'. So unless its some sort of crosstalk I don't think that thats the problem. I will have another look at the TV manual & menus tonight.

    Techronics are picking it up and probably replacing it. My concern is that it might just be some incompatibility with my Pani Tx32pk20. I'm wondering whether to ask them to swap it for a Tosh 210. (Two other players I've tried didn't exhibit this effect.)

    Macrovison is disabled. Recording quality appears to be very good with a rock steady picture. I have yet to get hold of an RCE disk to test.
     
  4. garry_brock

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    Hi Colin,

    I am suffering from very similar problems. Have just received a Pioneer DV545, from Techtronics. My TV is Panasonic 32PK20 also. Macrovision etc supposedly disabled as part of multimod. <br />Hooked up via SCART-AV1(RGB) and selected RGB output in menus. I too am getting the horizontal banding you describe. Switching to SVHS on DVD, then using AV2S port on TV seems to cure problem, picture is then excellent.<br />Thing is, I would really rather use RGB as its supposed to be the best.

    Anyone got any ideas/solutions???
     
  5. aqureshi

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    Hi,

    I have recently bought the DV444 player from DVD Magic and I don't see any of the problems mentioned in the above e-mails. May be the modification has got to do the problems you people are having.<br />The picture on my TV(RGB) is crisp and sharp

    Cheers
     
  6. MattB

    MattB
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    FYI the pioneer players do not require hardware modification - you do not even need to remove the lid!

    If you look at the back panel there is a little slot near the bottom at one end with a connector behind it. With a PC, the right cable and software most things are possible <img src="biggrin.gif" border="0">
     
  7. ColinHaldane

    ColinHaldane
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    Kamakiriad I can confirm that the TV is set to<br />RGB There is no actual seeting for it. The AV1 scart has just composite and RGB and it auto switches.<br />Badger - Interested to hear that you have same problem with same TV. Perhaps its a compatibility problem with Pioneers and this TV model. Now I wondering whether to ask Techronics to swap it for a 210.
     
  8. ColinHaldane

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    Kamakiriad you seem to know a lot about this. Do you think that its some sort of coupling from the composite conductors to the RGB. Is there the slightest chance that if I clipped the composite connection at the DVD scart this might help?
     
  9. MattB

    MattB
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    Hi Colin, I think I know what is going on here! I downloaded the manual for your TV and as you say, the set has to auto-select RGB, there is no manual way to force it.

    For auto RGB select to work the source (in this case the DV-444) must output 0-0.4V on pin 16 of the scart for composite video and 1-5V for RGB.

    The good news is that although pin 16 is not mentioned in the DV-444 manual (p60) I measured it and can confirm that the correct switching signal is present.

    This can only mean that your scart cable is not fully wired. If possible, unscrew a plug cover and check to see if pin 16 is connected. Alternatively, if you have a tester, do a continuity check. For more scart info look at <a href="http://www.hardwarebook.net/connector/av/scart.html" target="_blank">Hardwarebook.net</a>.

    As you may know, many cheap scart leads only connect composite video and stereo audio. The other one to avoid is cheap 'fully wired' or 'universal' leads which connect all pins but just have an outer shield instead of using individually shielded wires plus an outer shield.

    Gotta sleep now...
     
  10. ColinHaldane

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    Thanks Kamakiriad<br />Although an Argos cheepie (£4.99) mu scart<br />has all pins connected and they appear to be<br />individually screened.<br />I'm sure the TV is switching as you can see a dramatic leap in the quality of the on screen menu when you change the o/p mode of the 444.

    Techtronics pick up the player today so we will have to wait and see. I just have this bad feeling that a new one will suffer the same problem.<br />BTW I did try the Pannie digibox on RGB in the DVD socket. There were no visual oddites at all.
     
  11. garry_brock

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    Colin,

    Please let me know how you get on with your replacement player. As mentioned earlier, I have the same TV as you, and the Pioneer 545. Would be very interested to know how you get on

    BTW : Ive got a hunch feeling the problem is only evident on PAL (R2) discs, have you tried a R1???
     
  12. ISCM

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    Are you sure that your problem is not your cheap SCART lead?
     
  13. ColinHaldane

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    I'll let you know what goes on Badger. I only have R2 disks but I don't think thats anything to do with it as I can see the bands without a disk in when I'm just looking at the 444's on screen menu - can you?<br />The 444 was picked up yesterday but I have a bad feeling that a replacement is going to have just the same problem.<br />I think that I'll start a new topic asking for owners of our model of TV who use a DVD player with RGB if they have anything like this!
     
  14. ColinHaldane

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    Hi ICSM - No I don't think its my cheap scart lead. This is all individually screened. Also using the same lead with a digibox on RGB shows no banding effects. Thanks for the thought though.
     
  15. ColinHaldane

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