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  1. #1
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    Default RF Modulator Quality - Dreambox 7020


    Db 7020
    Gemini 3.30
    Camd3 and Newcamd

    I have a new 7020 which from installation was connected to a tv using phono cables and the picture was and still is amazing.. Over the weekend I connected it to the rest of the tvs on coax. there was some interference on the picture, I moved to different UHF channels with no difference, turned off all other UHF devices (sky and video recorder) no difference. When I record there are slight sparklies on the screen every 4-5 seconds and when the disk spins up to record or play there is a hum noise and the picture vibrates until disk is up to speed. On phono connections there is no problem. Is this a modulator fault or an image fault. Any opinions or help.

    DFDREAM

  2. #2
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    with the trials you have done, it seems the supply of power is not stable enough or not stabilized, a component or two could be faulty resulting to unstable power but still able to operate. check your supply for changed values, or lost cap values.
    just a suggestion

  3. #3
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    Default RF Modulator Quality - Dreambox 7020

    Cogil, thanks for your reply.
    What do you mean changed values, or lost cap values ?
    Is there a common power supply problem with dreambox 7020s ?
    Should I replace the PSU ?
    Should I return it for a replacement ?

    with the trials you have done, it seems the supply of power is not stable enough or not stabilized, a component or two could be faulty resulting to unstable power but still able to operate. check your supply for changed values, or lost cap values.
    just a suggestion

  4. #4
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    capacitors do loose values like 100mfd becomes 20mfd, thats after a long time or due to power surges forcing operations above allowed limits. this makes power supplys work without stability, take the machine to dealer or expert, unless you have a power supply to change and see if problem drops or persists. it could still be something else, but this is first suspect.

 

 

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