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Gobs of thermal paste should prevent new Chromecasts from overheating

By Shawn Knight
Oct 8, 2015
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  1. Google unveiled a pair of new streaming media accessories last week. Both the second generation Chromecast and Chromecast Audio unitize a unique form factor that’s wildly different from its first HDMI dongle. According to iFixit, there’s a good reason for the design change.

    The original Chromecast was known to run on the warm side, an issue that likely played a role in the new design.

    Once the teardown specialists got the outer cover removed, they found a large (relatively speaking) EMI shield covering the motherboard. On the underside of the EMI shield was a large gob of thermal paste. iFixit found another helping of thermal paste under the second EMI shield as well as on the reverse side of the motherboard between it and the bottom of the chassis.

    Although the new Chromecast wasn’t advertised to support 4K video, Google did say it planned to add new features in the near future. Unfortunately, 4K video won’t be one of them as the Marvell Armada 1500 Mini Plus processor tops out at 1080p resolution at 60 frames per second.

    It’s not a total loss, however, as iFixit loved the internal detachable HDMI cable as it addresses what is likely to be its most common problem – a damaged or loose HDMI connection.

    The electronic surgeons also disassembled Google’s Chromecast Audio. The design is very similar internally, iFixit said, as some of the chips are the same as what was found in the video streamer. The big difference, of course, is the inclusion of some audio-specific ICs.

    iFixit didn’t assign a repairability score to either device as there simply isn’t much to repair in the event of an internal hardware failure.

    All images courtesy iFixit

    Permalink to story.

     
    misor likes this.
  2. Skidmarksdeluxe

    Skidmarksdeluxe TS Evangelist Posts: 6,514   +2,059

    That's supposed to be TIM? It looks more like a wad of chewing gum to me. And if it is TIM, isn't it supposed to be applied sparingly?
     
  3. misor

    misor TS Evangelist Posts: 1,163   +197

    ( I'm tempted to say it is SHAWN, the other article is from TIM. ;) )

    I wonder how ifixit 'fix' the disassembled parts afterwards... do they assemble it again to see if the product still work as intended after reassembling the parts?
     
    Skidmarksdeluxe likes this.
  4. Skidmarksdeluxe

    Skidmarksdeluxe TS Evangelist Posts: 6,514   +2,059

    I highly doubt it considering some of the stuff they rip apart practically requires an angle grinder, crowbar, blowlamp, cold chisel and 4lb hammer... and thats just to take it out of the box. :D
     
  5. SuperVeloce

    SuperVeloce TS Booster Posts: 133   +34

    yeah that is supposed to be TIM. Why not? You can buy TIMs with different density, liquidity and materials for a reason. When there is a 2-4mm space between a chip and an aluminium plate I doubt mx-4 is the best for it.
     
  6. Skidmarksdeluxe

    Skidmarksdeluxe TS Evangelist Posts: 6,514   +2,059

    And that, my friend, is why thermal pads exist.
    P.S. I doubt MX 4 is the best interface for anything.
     

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