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  1. #1
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    Default Sursa sau caut depanator pentru sursa dm7020

    Cumpar sursa sau caut depanator pentru sursa dm7020. Dreamul porneste insa se blocheaza la boot cand pe dispay apar cand doua liniute in colt stg sus sau mai rar sigla dream si ceva cu boot 35 jos. La conectarea la retea se aude un tzac scurt in zona sursei, probabil vreo protectie.Ms mult.

  2. #2
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    posibil si ca sursa e ok iar tzacul sa se produca in momentul intrarii sursei in protectie

  3. #3
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    In caz ca nu gasesti depanator si vrei sa-l vinzi sunt interesat daca arata carcasa si telecomanda OK.

  4. #4
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    Quote Originally Posted by nickey4321 View Post
    Cumpar sursa sau caut depanator pentru sursa dm7020. Dreamul porneste insa se blocheaza la boot cand pe dispay apar cand doua liniute in colt stg sus sau mai rar sigla dream si ceva cu boot 35 jos. La conectarea la retea se aude un tzac scurt in zona sursei, probabil vreo protectie.Ms mult.
    ia citeste aici poate ai noroc :

    My successful repair of the DM7025 power supply
    After reading several forums (including this one) I found the solution for my DM.

    I replaced the PSU two years ago and have been running the "new" version of the PSU with green transformers.

    But a couple of weeks ago it suddenly died.
    When I turn on the box there is a dim backlite in the LCD display and only 2 dots showing
    I opened the box and measured the voltages on the powerpins to the harddrive. The 5 volt line had 0,7 volt and the 12 volt line had 0,1 volt.

    The cure for me was to replace C36. This is a small black 25V 100uF posisioned under one of the heatsinks. When I measured it, it was only 0.3uF

    The box is now up and running again

    I also measured all the voltages to the mainboard when it was OK. Here is the list:

    PIN Volt
    1 (red) 0
    2 2,62
    3 2,62
    4 0
    5 3,42
    6 0
    7 5,01
    8 0
    9 11,8
    10 11,8
    11 0
    12 15,1
    13 3,24
    14 12,2

    Hope this can help others to fix their supply.

    NOTE Remember to note the orientation of the cap before you take out the old one and put the new one in with the negative leg in the correct hole. (You can also see that the printed circle on the circuit board has a thicker line where the negative pin should be)

    succes

  5. #5
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    Ma poate ajuta cineva cu depanarea sursei de DM 7020, va rog? Mersi mult.

  6. #6
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    da un Tel sau mess pe PM
    si vorbim,...

 

 

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