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BOLT Stock Cooling SUCKS

Discussion in 'TiVo Bolt DVR/Streamer' started by CIR-Engineering, Feb 10, 2018.

  1. justen_m

    justen_m Cheesehead

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    Yeah, 66C, my bad.
     
  2. Bbwillie

    Bbwillie New Member

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    Upgraded to a new volt vox 3T, after 1day of use I started to hear a humming noise and the case was hot when I touched it. TIVO you have a design problem here !! the fan is blowing down but there's nowhere for the air to move, a 1/4 inch. Gap at the bottom ain't enough. I put a giant black paper clip under the box so air can move about 1 and 1/2 inchs. high and I noticed a big difference right away .
     
  3. dirtsy

    dirtsy New Member

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    Under the...
    I don't know if this info will help anyone, but I've had zero problems after upgrading drives and changing fans and then needing to do RMA's for the buzzing from the motherboard issue (and I did break a clip on one!)...just make sure you put the original parts back before you ship! And DO NOT mention that you opened the case and modified it when you call support.

    I currently enjoy temps in the 51-56 C range with OTA...My post about my "issue"...sounds like a JET engine taking off!!!

    EDIT: Grammer
     
    Last edited: Feb 16, 2018
  4. Thom

    Thom Unemployed and loving it !

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    I don't have a Bolt, but I thought I might mention a couple of things that increased cooling on two other TiVo models I owned. Perhaps it will help in your Bolt cooling solutions...

    Philips DSR 6000
    This box's fan pulled air in from the right-edge bottom of the box, over the internal power supply board, over the main board, through the fan, over the hard drive, then exhausted it out the left-edge bottom of the box. There was at least 16+ inches between the inlet and outlet holes punched in the bottom of the box. The easiest cooling solution that worked? Putting a long folded piece of paper under the middle of the box. Turns out hot air from the outlet holes was moving under the wide box bottom to the inlet holes. A simple piece of paper prevented this airflow so that only cooler room air entered the inlet holes. If I remember correctly, the box cooled down an extra 10 degrees or so.

    Base Roamio
    I have four of these boxes, each on its own shelf in an A/V cabinet that has an open front and an open back with closed sides supporting the shelves. Of my four base Roamios, the 2nd one down always ran 10 to 15 degrees hotter, such that it would occasionally hit a main board temperature of 70, which triggers an over-temperature shutdown that lasts until you power cycle the box.

    Inside the base Roamio, the cooling air comes in through inlets in the right side of the box, travels over the main board, through the small fan, over the hard drive, then through the outlets on the left side of the box. There's a largish shallow finned heatsink on the main board with an inch or so of empty air above it. While the fan moved air through the box, it did not specifically move air through the heatsink fins, they only got air convection. I replaced the fan with a higher volume one - no change. I removed the heatsink, cleaned the cpu and heatsink, put some good quality heatsink compound on it, and reinstalled the heatsink - no change. So I cut a piece of corrugated cardboard from an Amazon box, trimmed the back-side edge to fit between the various backside connectors (probably unnecessary) to prevent air infiltration along that edge, trimmed the right-side edge to reach barely past the heatsink fins, folded and trimmed the left side cardboard such that the bottom 3/4 of the fan pulled air from under the card board and the top 1/4 pulled air from above the card board. The front edge was folded down (probably unnecessary) to prevent air infiltration along that edge. I also cut a couple of narrow strips in the middle to fold upwards to press against the box cover to keep the cardboard down against the heatsink fins. This turned the cardboard into a shroud that forced air to be actively pulled through the heatsink fins. I let it run overnight to fully warm up before I checked the main board temperature. The box was now running 10 to 15 degrees cooler than before. I haven't had an over-temperature shutdown on that box since.

    Open your Bolts up, analyze the cooling air path, and use something to prevent inlet and outlet air mixing together, plus maximize airflow through any cooling fins.
     
    Last edited: Feb 19, 2018
    CTLesq likes this.
  5. Thom

    Thom Unemployed and loving it !

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    Quick, cheap, and easy experiment: Cut a triangular piece of cardboard to fill-in the triangular space under the Bolt, position it under the Bolt to block airflow from outlet to inlet, and see if it affects temperature.
     
    Last edited: Feb 18, 2018
  6. aaronwt

    aaronwt UHD Addict

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    That would majorly affect the temperature.
     
  7. Thom

    Thom Unemployed and loving it !

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    Southern Calif.
    I'm not saying to block the inlet and/or outlet. I'm saying to make and place a triangular cardboard wall in the arch under the Bolt, positioned to prevent warmed exhaust air from being sucked into the air intake. Note that I have not examined a Bolt's airflow myself; I am basing this recommendation on the Bolt airflow description in this thread's first post by CIR_Engineering.
     
  8. fyodor

    fyodor Member

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    We got one of those USB powered cooled laptop fan/heatsinks and put it under our Tivo Bolt. Temp went down about 5 degrees and some of the bugs we'd been having (skipping/freezes) went away.
     
  9. UCLABB

    UCLABB Well-Known Member

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    I have a usb fan on the way. I plan on directing the air from the fan under the arch of my Bolt+. I hope this will have a positive effect.
     
  10. clay.autery

    clay.autery Member

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    Northwest...
    See my thread on Documenting my Bolt experiences.... I've done the isolation experiment as an extension to the elevation experiment.

    Isolation does make a difference, but not as much as elevating the exhaust end out of the intake plane.
     
  11. fyodor

    fyodor Member

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  12. aaronwt

    aaronwt UHD Addict

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    In my experience, a wire shelf has provided the best cooling for a Bolt.
     
  13. UCLABB

    UCLABB Well-Known Member

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  14. BobCamp1

    BobCamp1 Well-Known Member

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  15. foghorn2

    foghorn2 Active Member

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    All of this is a bit like passing gas into the leather couch and feeling the warmth rise up to your cheeks.

    Raise your arse the next time!!
     
    dirtsy likes this.
  16. GardenBear

    GardenBear New Member

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    Feb 9, 2018
    Why people would just follow instructions on setting these things up anyway no problems here other than the VOX issue WITH THE REMOTE!
    I too was a naval engineer, and experience on SST G's and the cooling of such which are ship service turbo generators that provide the power for a ship that's well a thousand times the size of this little box.

    Once again no problems here except that stupid error code on the Vox remote.
    Which again TiVo is completely aware of and several people are getting the same error D403

    As far as the cooling is concerned if you have everything set up properly in the box and with the cable card and it paired properly and you have a cable card that is working properly and doesn't get too terribly hot approximate operating temperature on a normal basis of this box is around 60 degrees which is just fine. See the picture I sent a couple water glasses under the unit it works perfect keeps it nice and cool no issues here I plan to make a small two and a half inch raised box with a small computer fan in the back of it that will be installed and come on automatically with the unit problem solved not pictured yet I will post once I get it built and I get back from my trip from the island of Hawaii seeing the volcanoes and laying on the black sand beach have a great week peeps[​IMG]

    Sent from my SM-G955U using Tapatalk
     
  17. CIR-Engineering

    CIR-Engineering Video Calibration & Electronics Repair Engineer

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  18. CIR-Engineering

    CIR-Engineering Video Calibration & Electronics Repair Engineer

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    Chicago USA...
    Well here is my solution:

    My Awesome BOLT Cooling Mods ;-)
    My BOLT I am using OTA so no cable card at all and it was sometimes going over 70 degrees C even outside my cabinet propped up for extra cooling. Some TiVo's run hotter than others, but your 60 degrees is very cool for a stock BOLT just on stilts.

    craigr
     
  19. Tony_T

    Tony_T Well-Known Member

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    I'm at 57° - 62° with my Bolt in a closed, fan-ventilated cabinet.
     
  20. aaronwt

    aaronwt UHD Addict

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    That's the normal temp for a stock bolt to run that way. Raised up from the surface. At least with the seven Bolts I have used. Of course if it does any transcoding of video, the temps will go higher while doing that.

    My current Bolts have the aftermarket fan in them. And sit on a wire shelf. But I moved them into another room and am just using a Mini Vox in my UHD setup for now. Since the Mini Vox is silent, and I've always been able to hear any TiVo with a fan or hard drive in it from across a room.
     

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