Vu+ Duo2 measurements

Discussion in 'VuPlus Duo2 Schematic drawings, Pcb images etc..' started by Johnny B., Mar 28, 2018.

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  1. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    These measurements could be handy if you have a hardware issue with your motherboard.
    It may tell which circuit gives a issue.

    Click on the picture for a full view.
    Good luck,
    Duo2-ohm-measurements.jpg

    Voltages overview which were already posted in this topic,
    [​IMG]

    These are the U702/U825 measurements however keep in mind that the U702 voltage outputs is not present if the box is not booting up and is as far I see it to feed the fan.
    [​IMG]
     
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  2. Aliraza63

    Aliraza63 Active Member

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    Hi
    My dear friend Johnny .
    wish you will be fine and enjoying good health.
    I will request you kindly put some light over VU+ Duo2 built-in Wi-Fi section , its chip , its location and volts measures . there are number of boxes have lost their wifi during updates . some time peoples ask me at vu+ panel about its Wi-Fi hardware section . I reply them according to my information but its not enough often .Through google search cant find exact answer that how it has happened . Just for the helping purpose and information I need to have the exact information . e
    Always thankful for your kind help and support .
     
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  3. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Hi,
    To date I have never known or noticed that these boxes should have WiFi on board, at least not noticed in the box I have. But right now I don't have access to this receiver, but I can on Monday, so I'll investigate tomorrow.
     
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  4. Aliraza63

    Aliraza63 Active Member

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  5. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Yeah, I now see it, mine has (of course) also this WiFi option, but it's pretty old and thus may not work on all WiFi systems.
    I think it's integrated, same as the network in to the U208 RTL8211 chip.
    U208-Snap.jpg

    This chip is not so easy to measure without a scope, as also very risky to do, and I have not the impression that it will be a hardware issue when only the wlan of it failed.
    U208ds-Snap.jpg

    Nevertheless, they must at least see it in to their network settings, the Wlan and Network, otherwise, when they only have the network option, than it seems to me more related to the drivers.
    Probably they use other drivers than the correct one as for in this case, the drivers for the RTL8211EG

    screen01-Snap.jpg

    In any case it works in my case without any issues with the openpli 8.0, with no extra drivers added.
    screen02-Snap.jpg
    screen03-Snap.jpg


    Based on this, it seems to me most logic that it's not a hardware failure because all the network is working with one chip, and by a hardware problem it seems to me not logic that then the network part still works.

    This seems to me only possible when using drivers which not support the (old) wlan, and thus than also not appears in the menu.
    Or when appears, but not connect may be related to the old/new wlan network, or due the weak receive/send signal strength of these wlan chip.

    NOTE the above information, as that it's also used for the wifi is incorrect, this chip handles only the network.
    I will add the correct info about it soon.
     
    Last edited: Feb 10, 2021
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  6. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Okay, it was a bit hidden behind the front panel but here it is,
    Vuplus-duo2-wifi-info-00.jpg

    When taken a closer look, you see it has the RT5372L chip on it,
    Vuplus-duo2-wifi-info-01.jpg

    And further it is basically an usb Wifi stick, without the usb connector as you can see on this picture, it uses the same four connection as also used with a usb stick.
    All the connections for it are coming from the flat cable.
    Vuplus-duo2-wifi-info-02.jpg

    The Data connections (D+/D-) is normally direct from the cpu, the 5v is delivered/controlled by the U402 8pins ic, located after the cardreader of the motherboard.

    Detailed description of it,
    WIFI module, size: 18*34*1MM, solution:
    RT5372L Ralink brand, with two antenna interfaces,
    WIFI module requirements voltage 5.0V
    pin hole spacing 2.0
    external antenna
    download frequency 300M

    Further there is not much to say more about it, it has a led onboard and this led reacts (flashes) when there is some activity, when not then it's on.

    In any case, it is in fact a usb version and can be replaced when needed.
     
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  7. Aliraza63

    Aliraza63 Active Member

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    Hi Good Morning.
    Well done Johnny . Great man great job . thats what I was looking for .
    Yes. The RTL8211EG is the ethernet PHY, the fixed 10/100/1000 ethernet chip.
    After your last inspection I checked thoroughly and saw my box 's builtin wifi was not working I was unable to see WLAN in network . after number of tests and checking in images scripts I saw the driver was already there . there was no driver issue . finally after clearing my doubts just for the checking purpose .yesterday I have replaced my duo2 board with new one bought from VU + franchise (some months before).
    But that time again the result was same . No Wlan in network . I still have doubt if its not hardware issue it must be ceased in any kind update. There are lots of peoples around owned box duo2 but silently one day they have found the builtin wifi is not working . I have opened this topic regarding script/software issue in our Openpli developement lodge . we are talking about it and finding the clues in script as well.
    I shall inform you here about my updates .
    Once more again thanks for your kind support and efforts . its priceless
    Wish for your happy and healthy life .
    Regards
     
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  8. raza05

    raza05 Active Member

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  9. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    I have no idea why you like to connect a wifi board to this fpga chip programmer port.
    As also, if it can be done, and will work.

    If you like to replace the wifi of the front panel, then the easiest way I think is to take a usb wifi stick and to dismantle it as also removing the usb connector before mounting it.

    Other options/ideas are not to use the wifi usb port, or to add wires with a usb connector to it, and to connect a usb wifi stick, or use a usb wifi stick into another usb port.

    In any case, all these ideas are only usable if the image file had the drivers for it, or the possibility to add it, otherwise it will also not work.
     
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  10. raza05

    raza05 Active Member

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    Thanks for the reply ..It was just for experiment purpose I want to try on Solo 2 ..still I have no chip ..so nothing an be done .. any ways thanks again for valuable reply ..
     
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  11. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Always educational and exciting, experiment ideas .. but uhmm..
    ... still I have no chip ...
    Which chip, the fpga chip for a solo2?

    If that's so, and you have some vu+ part, then you could try the fpga chip from a duo2 to the solo2 or from a solo2se etc..
    I think that it has a good chance that it will work.
     
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  12. raza05

    raza05 Active Member

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    yeah ... I 'll try it soon ..I 'll also order on aliexpress this wifi module ..let's see what comes out
    Thanks again...you are great
     
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