Aide sur ZGEMMA STAR 2S

Discussion in 'Other satellite receivers.' started by dangchui, Sep 2, 2018.

  1. dangchui

    dangchui New Member

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    Hello i come back
    finally the project for solder on my vusolo pro v1 THE board japhar is more complicate and expensive 30 euros +++ SOLDER and time

    i have buy for 57 EUROS A super demo ZGEMMA STAR 2S
    is similar at vusolo 2 OR cloud ibox 3

    IS perfect performance and quality absolutly magnific

    then i want help because after very heavy storms
    especially lightning through the satellite cable grilled my demodulator zgemma

    the power supply is ok i have test but no light apperead on front panel and nothing on tv [​IMG]

    i joint photo of mainboard if there s people or JB know this démo

    if it s possible to reactivate this WITH JTAG connexion if it s similar to cloud ibox 3


    or say to me what composant test or replace for restart

    as soon as on the left where there s flech white there s similar board at vu japhard board

    this demo then is ok for all firmware and open pli last version 6;2

    THanks for you help
     

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    Last edited: Sep 2, 2018
  2. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Usually it is fatal when a lightning strike hits a receiver.
    Simple, because the cpu is directly connected to the connections nowadays.
    In any case the usb / network / hdmi and so the chances are that the CPU is damaged.

    But maybe I have a motherboard, so maybe I can give you some measurements.
    But no sooner than tomorrow.
     
  3. dangchui

    dangchui New Member

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    THanks Jb i understand
    and you know the motherboard of this mark ZGEMMA
    you have seen my photos of jboard similar at japhar board

    then that sinteresting because this demo is official know for all team openpli open atv open vix

    OK I wait you info i hope i can mesure and solve the problem
     
  4. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Yeah (of-course) I have already tried the VuJ chip on these Zgemma receivers, older and newer, and it will not work.
    Mainly because these boxes use the serial part of the chip for decoding, and all other vu type boxes works by the Scl/Sda chip ports.
    In any case, it can not work due the differences of using how to reads of the chip.
     
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  5. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Unfortunately I only have the Zgemma star H1/1500 S2C board version, but the most voltage values (I think) will be the same.
     

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  6. dangchui

    dangchui New Member

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    OK thanks exactly the same board of me and if i have understand you have write in red the measurement necessary

    ok when i have time tomorow i measure thanks a lot JB
     
  7. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Yeah basically are all voltages necessary and I've updated the picture, now with the Jtag and Rs232/TTL information.
     
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  8. Andrzej

    Andrzej New Member

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    Hello. I see a lot of good work, my motherboard is a bit ina Zgemma Star 2S, but the W25Q32BV memory should have the same?
    at my place
    pin:
    1- 0.057
    2- as above
    3- 3.280
    6- 0.058
    7- 3.279
    8- 3.280

    does not turn on, only the red lamp on the front and yellow lamp in the lan socket are lit. Sorry for the weak English (Google translate)

    I can ask for tips. Can W25Q32BV be programmed in the programmer e.g. CH341?

    I will be very grateful for help Andrzej from Poland. Regards
     
  9. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    As for a programmer which support the W25Q32BV nand flash chip I need to check tomorrow.
    Your given voltage measurements pins 1 to 8 tells me nothing, because I do not known any location on the board which has these row pins.

    But when this box became defect after an online update, or by uploading new software, then you may assume that it's not a hardware issue, in some cases fixable with jtag, or with some bad luck it could also be the security chip failure and I'm not sure if they still available, and also I wonder if it's worth to spend money to it.

    In any case, you could compare the voltage values from my picture, however it is a H1 board, but the most voltage values (I think) will be the same, or even all of it.
     
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  10. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Programmers as the MiniPro or the Xgpro TL866II and probably others as the TL86plus support these W25Q32BV nand flash chip.
     
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  11. dangchui

    dangchui New Member

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    HELLO ALL

    is there people find a solution with this motherboard ZGEMMA STAR 2S with no light and no digital screen on front panel

    if Johnny B find a measurement of this motherboard ZGEMMA STAR 2S is better thanks
     
  12. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Maybe I have this board, one of which the tuners not worked, but I have to search to it thus later possibly more about it.
     
  13. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    No, the board I have is the Zgemma star H1/1500 S2C and these were already made with the voltages measurement as you can see by a posting above.
    But as far as I see it are the voltages measurement the same as the star s2.
     
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  14. dangchui

    dangchui New Member

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    OK thanks JB for you research if you say with an other board ZGEMMA H1 you are measure the same voltage of an other
     
  15. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Yes, indeed.
    It's pretty plausible that the voltages, at least the main voltages of the dc to dc circuits are the same.
     
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  16. dangchui

    dangchui New Member

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    hello i come back for my problem on ZGEMMA STAR2S

    my friend electronician take my demo for test and the shema of JB for mainboard ZGEMMA H1

    IS NOT the same and my friand ask to me if one people have an electronic schema of zgemma star 2S

    OR same at the photo OF Johnny B FOR ZGEMMA H1 the measurent voltage

    my friend find problem in this photo

    shown in the photo with the finger pointing at the problem no voltage
     

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  17. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Right now I have not this motherboard to see which ic it is but I'm thinking it could be an LM358 which is a Low Power Dual Operational Amplifier.
    It may not been feed because your motherboard does not starting up, but in any case, if it is the LM358, then the board should just working without it, only the audio may not work.
     
  18. dangchui

    dangchui New Member

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    THANKS for you reply JOHNNY b

    and you don't have an electronic schema of your ZGEMMA H1 or you don t know where i can find

    my electronic friend ask this

    thanks
     

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  19. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    No. I don't have a schematic of these boards, actually, I don't have any schematics from a satellite receiver motherboard.
    That's why I started a long time ago started to make my own schematics on a way everyone should understand.
    But, only from board I had bought or were given as a gift, it's for me to expensive to buy every receiver which were released.

    In any case, I could take a look into my spare part pcb boxes tomorrow, but I don't think I have one, ot at leas not one which works thus good enough to give some voltages information of it.
     
  20. dangchui

    dangchui New Member

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    thanks a lot J B I have write to air digital and i am in contact i have ask is possible to have schematic of these board he says he stop production at the end of 2017

    i wait answer
     
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