help me again with tuner rev:j on dm800 hd

Discussion in 'DM800HD Hardware troubles and Repair support.' started by sokifar, Dec 14, 2020.

  1. sokifar

    sokifar New Member

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    hello again Mr johny.
    after using my dm 800 hd pvr nearly 2 years thanks to your method of repairing and hacking the tuner bsbe 401 a. using caps .(like adding a 680 uf cap to pins on tuner'side and replacing the 1000 uf cap and the two 330 uf caps on tuner rev/j)
    here we go again this time.
    same problem which is losing signal at horizantal and hd channels.
    after opening the box i found that
    - cap n° C233 on MB (one of the four 2200 uf caps ) is out of service i replaced it but i still have doubt that the new one is also burned. i will replace it again.
    - but also i found a little yelow spot on a tiny resistor ( i think) on the tuner board: i think it's the r902 next to the 220uf cap on the back side of the tuner. ( please see picture )
    i need some informations about the value of that (R902) resistor and how to test it before replacing it.

    do you recomande some other verifications

    thank you a lot for your help
     

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    Last edited: Dec 14, 2020
  2. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    R902 resistor = 2.7K 0402 +\-5% 1/16W
     
  3. sokifar

    sokifar New Member

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    is it a 2.7 kohm resistor or else
    can i use the classic resistor ( the one with colors band) what are the colors please ?
    and how to put it ( in wich direction ) or it doesnt matter.
    thank you very much
     
    Last edited: Dec 14, 2020
  4. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Yes you can use a older type resistor, they all do the same if it's the same value.
    And you can place it in any direction.

    Resistor color band you can calculate here but it is..
    2.7kΩ Red, violet, red, gold