Fan Replacement

Discussion in 'TiVo Roamio DVRs' started by Redding Delivery, Nov 28, 2015.

  1. Redding Delivery

    Redding Delivery New Member

    12
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    Dec 10, 2009

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    I need to replace the fan in roamio basic. I have no problem removing the old one. I just don't know the right replacement. took mine out and lubed it, worked for two days, then got noisey again. Weaknees doesn't list one. I think the size is 30mm x 30mm x 10mm 12volt. Any suggestions?
     
  2. mickinct

    mickinct Member

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    Sep 14, 2015
    NUTMEG STATE
    Last edited: Nov 28, 2015
  3. txdmts

    txdmts New Member

    3
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    Mar 19, 2009
    My info is that the Roamio Basic/OTA use a JMC 3510-12 (03500A0028) fan, 1.35"sq x.4"W-> 35mmx35mmx10mm,
    12V/.08A. Hard to find a data sheet, but this is very similar to the 03500B0026 (which isn't to hard to find data on) -> 10.8-13.2V, ~ 9KRPM 12V/.1A, 4.7CFM, 31.2dB dual BB; 1.2W.
    Possible replacements: Evercool EC3510H12E, Adda AD3512MX-G53. I haven't had the need to replace one yet, so
    your updated feedback will be appreciated.
     
    msg4 likes this.
  4. Redding Delivery

    Redding Delivery New Member

    12
    2
    Dec 10, 2009
    Your right about the size. I pulled the bad fan out and got the specs from the lable. I installed another one from a spare OTA and installed it in my OTA lifetime. Works good. I ordered 2 spares from Amazon

    http://smile.amazon.com/gp/product/B00MYZAAPY?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00

    I think these will work.
     
    msg4 likes this.
  5. drhendrix

    drhendrix Member

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    Jan 3, 2003
    Loveland, OH

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    Hey Redding, would you mind describing what you had to do to remove the original fan?

    Thanks for any details.
     
  6. Dec 1, 2015 #6 of 18
    Redding Delivery

    Redding Delivery New Member

    12
    2
    Dec 10, 2009
    1) Remove top cover
    2) Unhook 5 wire connectors on main board
    3) Remove nut from Cable/Ant connector on back
    4) Remove screw above HDMI connector on back (T-10)
    5) Remove 3 screws on MB (1 on left side by fan connector, 1 in front, 1
    on right side, all T-10
    6) Main board will lift out if OTA model. (If Basic model, remove cablecard
    bracket from bottom (4-phillips screws.)
    7) Remove fan (4 T-15 screws)

    Reverse above procedure after reinstalling new fan. It took me about 30
    minutes for whole replacement on a Basic.
    New fan is extremely quite, unlike old one.

    Ed
     
  7. Dec 1, 2015 #7 of 18
    Teeps

    Teeps Well-Known Member

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    Thanks.
    Didn't see that when I tried earlier this year.
     
  8. Dec 1, 2015 #8 of 18
    drhendrix

    drhendrix Member

    47
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    Jan 3, 2003
    Loveland, OH
    Thanks Redding.
     
  9. Feb 5, 2018 #9 of 18
    Moldy_Oldy_Computer_guy

    Moldy_Oldy_Computer_guy New Member

    10
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    Feb 5, 2018
    If your fan is still working, but making noise, you can try lubricating it instead of buying another. I suggest a PTFE or Moly based spray lubricant which doesn’t leave wet residue. Works wonders! Just spray a tiny bit into the hub. Mine is back to being as silent as a mouse.

    These kinds of dry spray lubricants are also great for use on bicycle parts because they didn’t tend to collect dirt.
     
    Last edited: Feb 6, 2018
  10. josim

    josim Member

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    May 21, 2016
    South Carolina
    Yesterday I use a drop of 3 in 1 oil on my Roamio OTA fan. It is nearly silent now. Time will tell if it is a permanent fix. I wouldn't have done this but I had to return my 1st OTA for the same issue. I was about to order a replacement fan from Amazon so I thought a drop of oil couldn't hurt. Your mileage may very.:)
     
  11. Moldy_Oldy_Computer_guy

    Moldy_Oldy_Computer_guy New Member

    10
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    Feb 5, 2018
    3-in-1, WD40, and similar wet lubricants collect dust, so they can clog your fan. Tiny computer fans like this have very little torque, so they are easy affected by dust. A clogged fan not only won’t properly ventilate, but can pose a fire hazard.

    So if you use a wet lubricant, your results will vary. You’ve now been warned.
     
  12. kpeters59

    kpeters59 Well-Known Member

    3,259
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    Jun 19, 2007
    Houston, Texas
    WD-40 is a cleaner, NOT a lubricant...your mileage will NOT vary...

    -KP
     
    JoeKustra likes this.
  13. josim

    josim Member

    51
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    May 21, 2016
    South Carolina
    Moldy,
    Thanks for the warning. This was an experiment to see if I could save the fan and this was the best lube I had available. The only PTFE I have is a grease and I had not seen your post prior to this attempt. I keep an eye on this. Thanks again.
    josim
     
  14. kpeters59

    kpeters59 Well-Known Member

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    Jun 19, 2007
    Houston, Texas
    Along those lines, does anybody know if PTFE is conductive? Petroleum is well know as an insulator, but I'm not sure about PTFE. And my Google is out to lunch...

    -KP
     
  15. Moldy_Oldy_Computer_guy

    Moldy_Oldy_Computer_guy New Member

    10
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    Feb 5, 2018
    From the WD40 corporate website:
    Myth: WD-40® Multi-Use Product is not really a lubricant.
    Fact: While the “W-D” in WD-40® stands for Water Displacement, WD-40® Multi-Use Product is a unique, special blend of lubricants. The product’s formulation also contains anti-corrosion agents and ingredients for penetration, water displacement and soil removal.

    As for the electrical conductivity of PTFE, one of PTFE's many uses is as an insulating material. PTFE's many properties makes it ideal for use in lubricating computer fans and other small electrically powered moving parts. It's good stuff, even though it's not particularly good for the environment.
     
  16. JoeKustra

    JoeKustra in the other Alabama TCF Club

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  17. kpeters59

    kpeters59 Well-Known Member

    3,259
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    Jun 19, 2007
    Houston, Texas
    Yeah...anything you spray with becomes in need of lubrication in fairly short order.

    -KP
     
  18. foghorn2

    foghorn2 Well-Known Member

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    av-gp Green or Red?
     

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