Devo 7 won't turn off

Discussion in 'Walkera Devention Radios' started by jefazo666, Sep 11, 2016.

  1. jefazo666
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    jefazo666 New Member

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    Hi all,

    I bought a Walkera 250 Runner Advance something like 3 months ago. I have not used it too much. Maybe 15 flies or similar. Yesterday I was using my Devo7 for charging my batteries. Today I went to check the battery level and when I wanted to turn it off, the LCD shows power OFF, trims and battery status, then the light goes off, but the lcd still shows this information. The worst thing, is that it will not turn on again by moving the switch. I will have to unplug the batteries and plug them again with the switch in on position.

    Too bad that I bought this over the internet because now sending it to support and getting it back will be probably more expensive than buying a new one.

    Any idea about what can be the issue? Probably something is wrong in the power board, but I do not know what. I have found some other people on the internet having the same problem (1 or 2 people) but none had a solution.

    Another option would be to buy the pcb only for this controller.

    Any help will be grateful.
     
  2. jefazo666
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    jefazo666 New Member

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    This is the status after turning it off. it Will not start again!
    [​IMG]
     
  3. bjr981s
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    bjr981s Moderator Staff Member

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    Were you charging the Devo batteries? If so how did you charge them and what batteries are in the Devo?
     
  4. jefazo666
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    jefazo666 New Member

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    Yes, there is a power input in the back fir charging it. I Have bought specificly charging batteries for it:
    [​IMG]

    I Have done This twiece or three times
     
  5. bjr981s
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    bjr981s Moderator Staff Member

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    Show a picture of the batteries (What Chemistry are they) and the specification picture of the AC adapter. Input / output voltage freq and current in Amps.

    Where did you buy the AC adapter.
     
  6. jefazo666
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    jefazo666 New Member

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    I believe you mean this
    [​IMG]

    [​IMG]

    Enviado desde mi C5303 mediante Tapatalk
     
  7. jefazo666
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    jefazo666 New Member

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    I know amps were too many. The point is, how to solve it

    Enviado desde mi C5303 mediante Tapatalk
     
  8. bjr981s
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    bjr981s Moderator Staff Member

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    You should have said that in the beginning. Thats why I was asking all the questions to find out what went wrong.

    You have burnt out the recharge circuitry on the Devo 7.

    It cannot be replaced Walkera do not sell spare parts for the TX.

    Its either live with it. You will have to find another way to recharge the batteries, or buy a new Devo 7.

    This is the best price I have found. Currently $41.99 USD

    Walkera DEVO 7 7 Channel 2.4GHz Devention Transmitter Without Receiver
     
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  9. MiMo
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    If i remember my electricity correct the Amp value doesn't matter if its too high, it will adjust to what the transmitter needs, but if the power supply amperage is too low then it will not work but it will not hurt it either.

    But if the power supply voltage is too high for the transmitter then you vill destroy the transmitter.
    So voltage needs to be correct, but not Amps.
     
  10. jefazo666
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    jefazo666 New Member

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    Thank you for the link.

    How is that about not selling any parts? That is very bad. I will have to do some research.

    the best option would be to find any devo7 in second hand that had fallen or similar. :'( If that is not working, I will try fixing it myself. I can see a resistor looking like burnt, but values looks correct. I will try to replace it.

    Thank you for your help anyway
     

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