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Original Nintendo

Discussion in 'Electronic Repair' started by Kevin Dooks, Sep 11, 2007.

  1. Kevin Dooks

    Kevin Dooks Guest

    Hi, I have alongside me an original Nintendo system that has a
    problem. It hasn't been used in several years and when fired up today
    just sits there with the power LED blinking and the video output
    flashing in time with the LED. I have checked the 7805 and it's
    producing 5.05 V. Now before I dig deeper into this thing does anyone
    have any pointers as where to start looking.

    I know these are cheap and easy to come by but there are sentimental
    reasons for fixing this particular unit.

    Needless to say any/all assistance will be greatly appreciated.



    Kevin
     
  2. Meat Plow

    Meat Plow Guest

    Go to google.come and search using nintendo repair as key words.
     
  3. Clean the cartridge connector.

    --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: Anything sent to the email address in the message header above is
    ignored unless my full name AND either lasers or electronics is included in the
    subject line. Or, you can contact me via the Feedback Form in the FAQs.
     
  4. PhattyMo

    PhattyMo Guest

    And check/replace any near-by electrolytic caps..IIRC,the big one near
    the regulator would dry up from the heat and cause issues.
    I think I read something about another small cap in there too,near the
    RF modulator,not entirely sure..it's been a few years. ;-)
     
  5. Both cartridge connector and slot, i had trouble with that even
    when that type of console was 6 months old.

    Cheetah
     
  6. James Sweet

    James Sweet Guest

    Replace the cartridge connector, this is a *very* common problem, I've been
    through at least 3 connectors in the decades since I got my NES.
     
  7. gonzo

    gonzo Guest

    Replace the 72-pin connector. Easy, and a sure-fire
    cure for the blinking light problem. Available on eBay.
    Look for a kit that includes a cleaner and a tool for
    dismantling the game carts, otherwise all the crap on
    the game connectors will transfer to the new part.
     
  8. Kevin Dooks

    Kevin Dooks Guest

    Ok, some more info. The PCB is out of the case, the cartridge
    connector is unplugged from the board, the 2200u/25V cap has been
    replaced along with the 2 smaller electrolytics in the PS. All the
    'dry' plate-thrus have been soldered and the gum label on the board by
    the cart. connector has been removed, (I have had problems with the
    glue becoming conductive over time in the past) .

    All of the conductors on the cart. connector have 0 ohms end to end
    and a resistance between adjacent conductors of > 30 meg.

    Still have the blinking display/power LED.

    Am I missing something REALLY obvious (Can't see the forrest 'cuse of
    all these darn trees !) or am I just a bit dim .


    Kevin
     
  9. James Sweet

    James Sweet Guest

    Just replace the connector, trust us, you can't test it like that, the
    problem is poor contact between it and the game cartridge. I've never once
    seen this problem that wasn't caused by a bad connector.
     
  10. If it was working and then put into storage, the connector didn't go bad
    sitting around. It still could be dirty contacts inside.

    Also clean the contacts on the game cartridges.

    Or, as suggested, just replace it.

    --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: Anything sent to the email address in the message header above is
    ignored unless my full name AND either lasers or electronics is included in the
    subject line. Or, you can contact me via the Feedback Form in the FAQs.
     
  11. Kevin Dooks

    Kevin Dooks Guest

    Mmm, Ok, I will replace the cart. connector but it (the cart.
    connector) is NOT ATTACHED TO THE PCB and I still get the flashing
    video output/power LED.

    Sorry if I seem to be a bit slow.

    Kevin
     
  12. The flashing just means it cant boot the game. So, if almost any of the
    pins isn't making good contact, you get the flashing. With the connector
    removed, well, duh. :)

    --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: Anything sent to the email address in the message header above is
    ignored unless my full name AND either lasers or electronics is included in the
    subject line. Or, you can contact me via the Feedback Form in the FAQs.
     
  13. Kevin Dooks

    Kevin Dooks Guest

    Ok, sorry for being dim, I thought you would just get a blank raster
    with no cartridge installed. Today I learned something new.

    Thanks.

    Kevin
     
  14. James Sweet

    James Sweet Guest


    That's expected behavior, the LED will flash whenever it cannot boot.
     
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