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nas 200 no power

Discussion in 'Cisco/Linksys Network Storage Devices' started by Hackit, Aug 18, 2010.

  1. Hackit

    Hackit LI Guru Member

    Ok I think I'm screwed just need to get some other opinions.

    My linksys nas200 needed a mod and I took it apart to see where i could get 12 volts for the extra fan i wanted to add.
    well with my trusty meter in hand i found the perfect place for the 12 volts for my fan, the extra fan pin.

    well i had it plugged in all apart and found my 12 volt supply, i put the nas back together, after plugging it in i realized the light was not coming on, so i checked and made sure i had 12 volts at the connector, which i do but the lights do not work, and it will no longer power on.

    any ideas?
     
  2. jac_goudsmit

    jac_goudsmit Super Moderator Staff Member Member

    Did you push the power button after you plugged it back in? Did you try measuring the voltage over the big cap (C9)? Did you try powering up the motherboard with no drives and no fans attached? If you did any soldering, were you careful enough not to drop any solder onto the motherboard anywhere?

    ===Jac
     
  3. Hackit

    Hackit LI Guru Member

    Thanks Jac,

    1. Did you push the power button after you plugged it back in? = yes
    2. Did you try measuring the voltage over the big cap (C9)? = no i'll have to look for this cap.
    3. Did you try powering up the motherboard with no drives and no fans attached? = yes i tried the motherboard removed from the case, nothing was connected. still no power.
    4. If you did any soldering, were you careful enough not to drop any solder onto the motherboard anywhere? = very careful, not my first time soldering I'm actually very good at. I've been soldering for over 35 years.

    Should the board power on removed from the case with nothing attached?
    I'll try finding (c9) and see if it has power, i know there is 12 volts at the power connector (at the soldier points.


    thanks Jac for the response and suggestions it's much appreciated.
     
  4. Hackit

    Hackit LI Guru Member

    Ok I have 12 volts at (c9)

    i have the board removed and nothing is connected, when i plug in the power nothing lights up and hitting the power button does nothing.

    Not sure what to do and refuse to believe this has now become a door stop.

    :mad::frown::mad:
     
  5. jackito

    jackito LI Guru Member

    This is a very simple (maybe stupid?) suggestion, but, does the power button works ok?
    You can test it with a multimeter or instead of pressing the button, shortcut the pins with a cable and see if it starts?

    jackito
     
  6. Hackit

    Hackit LI Guru Member

    thanks for the suggestion Jac, this does nothing as well.

    i'm going to look and see if i can buy just the board.

    maybe i was a little ruff handling the board and shorted out some cap or resistor?
     
  7. jac_goudsmit

    jac_goudsmit Super Moderator Staff Member Member

    Also try to measure the voltage between pins 2 and 3 of U6 (that's the 7805T voltage regulator). There should be 5V there.

    Also on JP1 (serial port, not populated) there should be 3.3V between pins 1 and 4.

    You may also want to look at a datasheet for the RDC3210-G CPU to see if the reset pin gets activated and deactivated when you power it up, and maybe other things.

    You may also want to check all the 0-Ohm resistors to see if they still have continuity. Some of those are designed into the circuit to act as fuses.

    (I'm using this picture for reference by the way)

    From my own 35+ years of electronics experience I would say the most likely way to break a piece of electronics like this is that you fried a component by soldering or by static electricity...

    Troubleshooting a device like this is very difficult especially without a schematic. If you can afford it, you may just want to forget the whole thing and buy another one. Chances are you can get something faster for less money anyway.

    ===Jac
     

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