vu solo2 clone

Discussion in 'VuPlus Solo2 Hardware troubles and Repair support.' started by malpi, Apr 14, 2017.

  1. malpi

    malpi Member

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    Good I have here a vu only 2 clone
    That turns on the power light but nothing comes out on screen and image
    According to law by the web would have to change the flash
    it would be like this?

    Thanks
     
  2. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Depends...
    Or the security chip doesn't work.
    Or it has the wrong software on it as the boot loader so that the security chip can't work.
    Or it cant be fixed by software because the usb upload not works, then it must be repaired with I2C (Jtag) with a cypress board and bbs software.

    In any case, you must know with which motherboard you deal with to know what the correct process is to fix the problem.
    There are many different motherboards from different fabric's which all have there own way to bring it back to life.
     
  3. malpi

    malpi Member

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  4. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Seems to me the same board as I here have, the Vu+ Solo2 Lonrisun.

    Vuplus-solo2-lonrisun.JPG

    I don't know if you have the special rs232 cable for it, but to try to repair it with the serial method you need a cable as,

    Female to Female DB9 connectors.
    Pc side -------->Box side
    Pin 2 -------------> pin 6
    Pin 3 -------------> pin 1
    Pin 5 -------------> pin 5
    Gnd to Gnd

    But further I can not help you with it because I have only the motherboards, and no front panel for it.
    So, I'm not be able to find out how to fix the red led issue.
    In any case you could try to fix it with the Mcu flash tool and after it upload the boot loader with a terminal program as Hyperterminal.
    More about this use google, search for example Vu+ Solo2 Mcu or Vu+ Solo2 hyperterminal
     
  5. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    I have here some files for it which could be the solution for fixing the red led, it includes..
    Mcu flash
    HyperTerminal
    Solo2 bootloader Lonrisun
    And the bootloader SOLO SE

    However I have not tested them, and do not know if it will help.

    Also, before you try the software solution it seems to me wise to check as first if you have some dc voltages on the motherboard, especially on these output coils.
    Because I have the idea that every dc to dc ic has been separated switched on by the front panel circuit.
    If one of them fails, then it could be due the front panel itself.

    Check these coils if you have some dc voltages on it as, 1.8v / 3.3v / 5v / 12v etc.
    vu-solo2-vdcoutputspots.jpg
     

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  6. malpi

    malpi Member

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    Thanks again measuring tensions to begin to sound a click click and has broken the piece that is colored in pink under two capacitors
    Is of the ST mark but I can not see the reference

    http://subefotos.com/ver/?7578d551578322af6b8658950dae74ffo.jpg
    This is the reference ST NBH26L has melted when measuring voltage
    I'm going to look for it to replace thank you
    I'm going to look at another deco I have around here
     
    Last edited: Apr 16, 2017
  7. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Hmm, pity that this has happen, that's why I recommend to measure it from the coils, this to prevent this kind of problems.
    And standard measuring pins are too thick for this kind of smd technology, better is to mount a thin needle on the + measuring pen.

    But this circuit is for the LNB power supply, both coils are at rest 12v dc, the lnb ic increases it to 18v if necessary via the I2c input.
    For more about it, see the datasheet
    Nevertheless the motherboard should work without the ic, only the LNB's will not work.
     

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  8. malpi

    malpi Member

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    Ok this does not detect anything by hyperterminal i think the port rs232 is ko
     
  9. pirata79

    pirata79 New Member

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    salve,come da titolo cerco aiuto per resuscitare il mio decoder,vu+solo2 dopo aver caricato un immagine..sicuramente non buona il decoder non da piĆ¹ segno di vita,tranne che si accende la luce del tasto on,e quindi ho letto in giro che sostituendo il chip potrei recuperarlo,e cerco un chip gia programmato,mi anno dato di cercare su questo forum,e contattare Johnny.
     
  10. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    If you have uploaded a wrong image file, and you can not upload another image file with the usb stick then it can normally fixed by using the Jtag (official named I2C) method.
    To do that you need the famous cypress board and ofcourse the suitable broadcom studio software.

    Another option could be to try to fix it with the Mcu flash method, but this depends on which motherboard you have.
    In any case, for using the Mcu method you need to connect the box with a serial cable as described earlier in this topic.

    The option to use a pre-programmed nand flash chip for the vu+ solo2 is only needed if the nand flash chip has been locked on the 0 sector which can be seen in the bbs software.
    If it's still accessible with the broadcom flash software, and or (I think) the Mcu tool then it's not needed to replace the nand flash chip.
     
  11. pirata79

    pirata79 New Member

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    What kind of jtag should I use?
     
  12. pirata79

    pirata79 New Member

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    Then anyway, I forgot to tell you that either bought a chip on the internet and tried to replace it, but without result, and then either reset the original chip but still does not part
     
  13. malpi

    malpi Member

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    Connect with a null modem cable and putty have if you give some data
    If not, it is almost certain that you have to replace the nand flash
     
  14. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Not really, if the nand flash chip is empty, or corrupt, or can not be read, than there is also no terminal output.
    By Jtag, and uploading the bootloader, even if it's the wrong one, you will see at least a number code if you reading the nand flash chip with a terminal program and the correct rs232 connection pins.

    Best is to first figure out which motherboard it is and then to try the Mcu to upload the correct loader to the nand flash chip, or using the jtag method for uploading the correct boot loader.
    However, these methods only work if the 0 sector of the nand chip is still writable.
    Sometimes to fix by erasing the nand chip several times with the jtag/bbs software.

    If the connection to the bbs software failed, and the cypress board wires Sda/Scl/Ground are correct connected, then it's most likely due a hardware error on the board.
     
  15. pirata79

    pirata79 New Member

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    Which program to use to connect it via rs232
     
  16. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Terminal program as standard windows hyperterminal, or a free to download program as Putty should work.
    but you need also a pc or laptop with a real serial port to write to the flash nand chip, only to read you can use a usb to serial cable.
    However there are two ways to connect to the serial port of the box.
    On the normal way, by using a null modem serial cable you can receive the data from the box.

    To write you need a cable which is connected this way...

    Female to Female DB9 connectors.
    Pc side -------->Box side
    Pin 2 -------------> pin 6
    Pin 3 -------------> pin 1
    Pin 5 -------------> pin 5
    Gnd to Gnd

    These connections are also needed if you want to try to fix it with the Mcu tool.
     
  17. malpi

    malpi Member

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    In my case with Cypress if they let me delete but gave error when typing
    So I have to change the nand flash and load it with Cypres the boot boot
     
  18. pirata79

    pirata79 New Member

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    Or tried by rs232 port with puty, but not by any communication with the decoder
     
  19. malpi

    malpi Member

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    Test with hyperterminal o tera term
    Is the serial port native or with an adapter? Best native
    Check the connection deco pc well
    Pc side --------> Box side
    Pin 2 -------------> pin 6
    Pin 3 -------------> pin 1
    Pin 5 -------------> pin 5
    Gnd to Gnd
     
  20. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    When using the rs232 serial pins from above you could try it with this solo2-flash-mcu-tool.
    But as I said earlier, this tool is not usable for all solo2 boards, but than you will notice that is does nothing by seeing that the Mcu connect to flash are not successfully.
    Instructions howto are included, see the pdf file.