DM800HD No signal HELP

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  • kisza
    Member
    • Dec 2010
    • 46

    #1

    DM800HD No signal HELP

    Hi Guys,

    It's one of my first posts overhere.
    I use this forum alot for reading and advice thanks for that.

    My prob is that i have a dm800hd clone... . It worked fine till couple days back. What happened was when i wake up next morning and put tele on there was no signal. So i tested dish and wirees on my old Ferguson and all goes fine. So i susspect that tuner is gone, done some checks by multimeter, what i spot was that there is no 12V output from Tuner. (Great found the problem) I did order new tuner and just fit it today, but guess what no luck there is no 12V output to the LNB on NEW tuner either. I did try new images drivers etc. no luck.... i took off mainboard to check for burn out capitors and i can not see anything. My susspect is a mainboard but do not know where to look any advice will be helpfull.

    P.S My OLED screen gone black us well when i refit it. Any ideas i did worked fine before??
    Last edited by kisza; 27 January, 2012, 16:21.
  • abr
    Top Poster
    • Aug 2010
    • 108

    #2
    wow!
    i think maybe the power supply could have been checked first?
    seems as if its going to be an expensive job m8
    new tuner (about ?40) and now taking main board out!

    there are many posts on different forums questioning this type of fault, so maybe try power supply first

    don't know where you can get a main board from sorry

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    • kisza
      Member
      • Dec 2010
      • 46

      #3
      abr thanks for advice i just put bigger power supply 12V 6A and no changes someone mension about some L31 or C31 capitor under motherboard.... any ideas about that?? My motherbord version is dm800 rev P and tuner version is M. I just tried to put tuner version J (lended fro friend) but DM did not even boot.

      Any advice welcome.
      Last edited by kisza; 27 January, 2012, 22:38.

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