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DSE G1928 DVD player PSU failure

Discussion in 'Hobby Electronics' started by Franc Zabkar, Jan 14, 2008.

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  1. Franc Zabkar

    Franc Zabkar Guest

    If anyone has a DSE G1928 DVD player, I suggest that they replace all
    the BRC branded electrolytic capacitors on the PSU PCB
    (ROCO-V22A.POWER Ver 2.0), if they are able. I've just had one come in
    with catastrophic capacitor failures and one burned up resistor.

    Judging from the following reverse engineered circuit diagram, I
    suspect that this is, or will be, a common problem.

    See http://www.eserviceinfo.com/download.php?fileid=22837

    or

    http://www.users.on.net/~fzabkar/DVD/Sunplus/G1928/G1928_PSU.gif

    - Franc Zabkar
     
  2. I guess that's why DSE can retail the DVD player for $29!
    How much do the replacement caps cost? :->

    Dave.
     
  3. vavud

    vavud Guest

    What is your fucking point with all your suggestions about fucking
    capacitors?
    You might be good in Electronics, but boy, are you shit in Economics!
    Go away now and build you Atom bomb!
     
  4. atec77

    atec77 Guest

    If you unhappy about the offered help I suggest you slash your wrists
    in protest .



    Oh and its your or you're depending .
     
  5. Foaming at the mouth like that is not a good look.
    Go have a cup of tea, a Bex, and a good lie down.

    Dave.
     
  6. Pity the don't make Bex any more.
    I would have suggested he take half a dozen and wash them down with a Coke.
    Guaranteed to send him into a head spin. :) That's assuming he didn't
    chunder in the meantime. LOL

    Cheers,
    Alan
     
  7. Greg

    Greg Guest

    Why not just go to Strathfield Car Radios. and get there $19 box. And stop
    wasting your time repairing the $29 DSE crap.
     
  8. Franc Zabkar

    Franc Zabkar Guest

    It cost me about AU$3 for 8 Hitano EXR series 105degC low impedance
    types. Needless to say I did the job for a friend. I believe the G1928
    players originally sold for $79, and then were reduced to $49.

    Anyway the G1928 has been fun to play with. At the moment I've added
    an RS232 port in order to upload and download the firmware. I've also
    managed to change the DSE background to a nice alpine scene. One extra
    thing this player has is a USB connector on the decoder PCB. However,
    there appears to be no corresponding USB module in the firmware.
    Fortunately the G1928 looks very similar to an Aldi TEV1020 player
    which cost $39 and which does have the USB module present in the
    firmware (but not in the hardware). Hopefully I can transplant the
    Aldi firmware into the G1928 and get a functioning USB port.

    BTW, hacking players with Sunplus chipsets is relatively difficult
    because most of the available tools are in Russian or Chinese, as are
    most of the hacking forums. I spend most of my time trying to decipher
    instructions or console outputs. Unfortunately Google's translator
    produces some weird results. If a Russian speaker is watching this
    thread, I would welcome some help with a few phrases.

    - Franc Zabkar
     
  9. Franc Zabkar

    Franc Zabkar Guest

    That excellent circuit diagram is not my work. I'm sorry if it
    appeared that way. It was submitted to eserviceinfo by someone named
    "RE_King". I added it to my web site to complement the hacking work I
    have been doing on this player.

    FWIW, I replaced all the caps with original values, excepting that I
    had to use higher voltages in some cases for availability reasons.

    These are the caps I used:
    http://www.wescomponents.com/datasheets/EXR.pdf

    One more warning. The same PSU board is used in some Chinese "Sansui"
    branded supermarket players (not the same Japanese Sansui brand from
    20 years ago).

    - Franc Zabkar
     
  10. Jeßus

    Jeßus Guest

    Of *all* the people offering spelling/grammar lessons...
    LOL.
     
  11. bassett

    bassett Guest

    If he keeps going he's in for a nice healthy heart attack

    bassett
     
  12. There has been talk around of the traps of Philthy setting up a
    toaster repair franchise. Perhaps this person is the first franchisee,
    and newsgroup etiquette comes as part of the training package?

    Dave.
     
  13. atec77

    atec77 Guest

    You really are a collection and litany of rank stupidity compunded by a
    daily wank.
     
  14. It doesn't matter.

    Some of the funnest stuff I'm pulled apart to hack has been cheap crap.

    Cheap crap is cheap crap, it's all good.
     
  15. Franc Zabkar

    Franc Zabkar Guest

    The same PSU PCB was used in a $99 Sansui DVD player sold by KMart. In
    my experience buying a DVD player is a "crap" shoot (pun intended),
    whether you opt for a snob brand or a generic. If your only problem is
    the PSU, not the optical pickup, then you are lucky. A PSU failure is
    usually a cheap, easy fix. I'm also finding that the current decoder
    chips get very hot to the touch. As a rule I add stick-on heatsinks to
    these chips and the motor driver chip.

    - Franc Zabkar
     
  16. Franc Zabkar

    Franc Zabkar Guest

    I should add that the G1928 handles DivX5 and Xvid right out of the
    box, even though the DSE web site makes no mention of this.

    - Franc Zabkar
     
  17. Franc Zabkar

    Franc Zabkar Guest

    I've just had a look at another G1928. The caps are branded "Rubycon".
    They are the YXA series which are "standard" 105degC types, not low
    ESR. All are still in good condition, but I wonder if they are
    genuine.

    This is the datasheet:
    http://www.szmuchang.com/admin/eweb/uploadfile/20071213103007566.pdf

    The measured dimensions of the caps labelled 220uF/16V and 220uF/25V
    are 6x11mm for both, whereas the datasheet specifies 6.3x11mm for the
    16V cap and 8x11.5 for the 25V cap. The 1000uF/25V cap measures
    10x20mm, which is as expected.

    - Franc Zabkar
     
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