Results 1 to 12 of 12

Thread: dm800s tuner failed on HD channels only SD works.

  1. #1
    Senior Member gado's Avatar
    Join Date
    Jan 2008
    Posts
    880
    Thanks
    21
    Thanked 96 Times in 73 Posts
    Rep Power
    234
    Reputation
    356

    Default dm800s tuner failed on HD channels only SD works.

    I have a dm800s vertical and horizonal SD will work no problems but soon as I go to a HD channel I get a tuner failed error and the signal drops off the zero.
    Its a 10700 lnb and LOF,LOH, threshhold are all set the that.

    After I get the tuner fail error I usually have the repower the box if I want to go back the working SD channelsl.

    Is it lnb ? Faulty tuner ?

    Any ideas.

    Gado
    Last edited by gado; 31-12-09 at 02:47 PM.
    DM500s Black with rear on/off switch $99 inc post , DM800 sim 82 $250 inc post, DM800SE $310 inc



Look Here ->
  • #2
    Member
    Join Date
    Sep 2008
    Age
    77
    Posts
    400
    Thanks
    256
    Thanked 80 Times in 48 Posts
    Rep Power
    209
    Reputation
    346

    Default

    If it's a clone, I would say faulty tuner..had the same problem...still waiting for a replacement tuner. took the tuner out of my genuine dm800 and put it in the clone and it worked fine..

  • #3
    Senior Member gado's Avatar
    Join Date
    Jan 2008
    Posts
    880
    Thanks
    21
    Thanked 96 Times in 73 Posts
    Rep Power
    234
    Reputation
    356

    Default

    Its a clone. So its possible to have SD working and HD failing then ? I even got an image from Joffaa and the same thing happened so I though it maybe lnb or tuner. It looks like some kind of switching problem.
    Last edited by gado; 31-12-09 at 02:53 PM.
    DM500s Black with rear on/off switch $99 inc post , DM800 sim 82 $250 inc post, DM800SE $310 inc

  • #4
    Senior Member
    jonc's Avatar
    Join Date
    Jan 2008
    Location
    Bangkok
    Posts
    2,130
    Thanks
    401
    Thanked 836 Times in 335 Posts
    Rep Power
    428
    Reputation
    7951

    Default

    replace the tuner, it is an old known issues with clones.
    It is a hobby so mileage varies
    Loving IPTV with XBMC and android M8
    Join in the XBMCHUB community and visit me at http://tvaddons.ag/

  • #5
    Senior Member
    Join Date
    Jan 2008
    Location
    Perth
    Posts
    630
    Thanks
    108
    Thanked 24 Times in 20 Posts
    Rep Power
    223
    Reputation
    248

    Default

    I have seen few of the channels assigned with incorrect TP & SR details.Do a manual scan of the HD frequencies & then check if that has cured the problem.
    Location: Sunny Perth

  • #6
    Junior Member
    Join Date
    Oct 2008
    Posts
    10
    Thanks
    1
    Thanked 1 Time in 1 Post
    Rep Power
    0
    Reputation
    15

    Default

    Hey.
    I have a clone DM800 with a similar problem.
    LNB settings are the same as Gado too, but its a dual O/P Sharp LNB
    I cant scan any DVB S2 transponders, but all the SD one work fine and I get lock on them.
    I dont get tuner failed like Gado does and I can just zap back to an SD channel and all is good.
    Does it sound like a faulty tuner?????
    If so, where do I get one from?

  • #7
    Senior Member
    Join Date
    Jan 2008
    Location
    Perth
    Posts
    630
    Thanks
    108
    Thanked 24 Times in 20 Posts
    Rep Power
    223
    Reputation
    248

    Default

    Quote Originally Posted by Techo View Post
    Hey.
    I have a clone DM800 with a similar problem.
    LNB settings are the same as Gado too, but its a dual O/P Sharp LNB
    I cant scan any DVB S2 transponders, but all the SD one work fine and I get lock on them.
    I dont get tuner failed like Gado does and I can just zap back to an SD channel and all is good.
    Does it sound like a faulty tuner?????
    If so, where do I get one from?
    Ask CMoore he might have some genuine tuners
    Location: Sunny Perth

  • #8
    Senior Member toor's Avatar
    Join Date
    Jan 2008
    Posts
    812
    Thanks
    25
    Thanked 44 Times in 30 Posts
    Rep Power
    229
    Reputation
    206

    Default

    as jonc said... known problem with tuner... it can be repaired yourself most the time.

  • #9
    Senior Member gado's Avatar
    Join Date
    Jan 2008
    Posts
    880
    Thanks
    21
    Thanked 96 Times in 73 Posts
    Rep Power
    234
    Reputation
    356

    Default

    Yeah I had the Chinese send me another Tuner. Wouldnt mind repairing the other one though Toor
    DM500s Black with rear on/off switch $99 inc post , DM800 sim 82 $250 inc post, DM800SE $310 inc

  • #10
    Senior Member toor's Avatar
    Join Date
    Jan 2008
    Posts
    812
    Thanks
    25
    Thanked 44 Times in 30 Posts
    Rep Power
    229
    Reputation
    206

    Default

    what REV does the tuner say on it ??

  • #11
    Junior Member
    Join Date
    Oct 2008
    Posts
    10
    Thanks
    1
    Thanked 1 Time in 1 Post
    Rep Power
    0
    Reputation
    15

    Default

    Gado.
    Did the replacement tuner have any differences compared to the orig one that came with your box?
    Rev number too???

    And Does it actually work reliably now?...... I had to ask!

    Im trying to get one out of them too...but they want me to send the box back to them for repair..... with some interesting and deceptive instructions for RMA return!...

  • #12
    Junior Member
    Join Date
    Oct 2008
    Posts
    10
    Thanks
    1
    Thanked 1 Time in 1 Post
    Rep Power
    0
    Reputation
    15

    Default Fixed my DM800 REV J tuner for HD

    Well.... I'm pretty sure I fixed the tuner.

    I now get signal on the HD transponders and they scan and have been added to the bouquet with an SNR 12.9, AGC99%, BER 0.

    Some of the joints looked suss under the microscope at work so.....
    I replaced everysurface mount electrolytic capacitor on the plug in tuner PCB and one non surface mount, and resoldered the tuner pins along with a few other joints around the PCB. Q1, Q2, Q3 Transistors. ( I read about problems in this area.)

    I had a similar issue at work with prototype PCB's from china with really crappy capacitors that were supposed to be Panasonic brand, but were poor quality copies that tested at completely different values than what was printed on them.

    I cant fully check it, as my subscription isnt HD yet.
    Gado.... maybe this could fix your original tuner problem?

  • Similar Threads

    1. Replies: 2
      Last Post: 05-02-09, 11:55 AM
    2. Replies: 4
      Last Post: 17-10-08, 06:54 PM
    3. HDD Failed
      By intelliGEORGE in forum PC Hardware and Printers (including 3D Printers)
      Replies: 13
      Last Post: 07-05-08, 11:31 PM
    4. Failed recordings?
      By allstarnz in forum Dreambox
      Replies: 3
      Last Post: 20-04-08, 10:24 PM
    5. Whitey works o.k missing a few channels
      By paulbart in forum Satellite TV General
      Replies: 9
      Last Post: 16-02-08, 07:03 PM

    Bookmarks

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •