Dreamcast Fan Replacement

Discussion in 'Sega Dreamcast Development and Research' started by Nopileus, Jul 19, 2015.

  1. retronerd

    retronerd Spirited Member

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    Thanks works great:)
     
  2. psobb2009

    psobb2009 Member

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  3. nold

    nold Active Member

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  4. TriMesh

    TriMesh Site Supporter 2013-2017

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    You really should disconnect pin 6 on IC601 first (or cut the trace) - with no trigger signal, the Q output will be driven low, and forcing current into the chip might eventually blow up the output driver. The chances of it subsequently catching fire are small, but it could happen.
     
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  5. nold

    nold Active Member

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    I did some further research & found out the IC601 is sinking 26mA, which is 6mA above it's max. output sinking current. As you said, the chance is small, but I'll update my graphic with a trace cut!
     
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  6. Sp33dFr34k

    Sp33dFr34k Spirited Member

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    Installed this one today, ordered the prints and cable from @Collingall, works beautifully. Thanks buddy!
     
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  7. Gromber

    Gromber Spirited Member

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    Do you have to break the cable of an original fan to get the connector? or there is other way to get it.

    @Collingall, links not working for me, what´s the price? I will not pay more than the price of a full console for a cable, i know retro is expensive, no 3d models? thanks anyway.
     
    Last edited: Dec 17, 2018
  8. Collingall

    Collingall Robust Member

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  9. megavolt85

    megavolt85 Robust Member

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  10. Collingall

    Collingall Robust Member

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    Weird it works for me. Anyway here are the Digikey part numbers
    455-1126-ND connector
    455-3082-ND preterminated wires
    Fyi the wires have the pins terminated on both ends so you only need 2 wires for a single fan cable.
     
  11. Collingall

    Collingall Robust Member

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    To build the cable yourself you would need the following
    3 Pin housing $0.10 each
    wire with pins $0.43 each x2
    10K resistor $0.10 each
    3 pin fan header $0.49 each
    so $1.55 plus shipping their lowest priced shipping is $3.75 so you are looking at around $5.30 USD for one cable if you make it yourself that is also if you solder the wires to a pin header. I use nice receptacles in my cables but you can only really find those on Chinese websites like Aliexpress.

    I do sell finished cables for $12 on ebay including US shipping or discounted international shipping. If anyone wants to buy one from me direct I will discount them to $10 just send me a dm and we can work out the details.
    3D models are avalible in this thread or https://www.thingiverse.com/thing:2308549 I just posted brand new models that are stronger and easier to print on FDM printers.
     
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  12. mattek

    mattek Newly Registered

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    Hi there,
    anyone tried just replacing Dreamcast fan for a new one? In my console sits NMB 1204KL-01W-B49 5V 0.2A and suprisingly, I found plenty of them on Aliexpress. I couldn't resist from ordering one, however when it finally arrived, it turned out that my Dreamcast won't recognise the fan. Moreover, in feedback we can find somebody's review saying that it works with Dreamcast like a charm!
    Here's the auction: click
    Best regards.
     
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  13. psydefx

    psydefx Peppy Member

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  14. Collingall

    Collingall Robust Member

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    Correct, you will need to snap off the support clip by the screw hole though. It is only needed for GDEMU installs since the GDROM drive will hold the fan in place when installed.
     
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  15. psydefx

    psydefx Peppy Member

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    ok thanks for the clarification
     

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