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HR24s Running Hot

Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by itzme, May 4, 2012.

  1. Alebob911

    Alebob911 Hall Of Fame

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    So I think that if you put the fan towards the top of the shelf that has you Directv equipment you should be good. That will create an airflow pulling in though the gaps in the glass. It should also help by pulling the heat from the AVR shelf through the gap between the shelf and glass. Hope that helps you Anyone have any other ideas I might have over looked?

    I reread your post and see your planning on moving some equipment around. So the above is my recommendation for how things are. Here is for moving the AVR to the top and removing the door. I would just put the fan at the top and feel for the warmest area before placing your fan. My AVR gave the most heat of the left side so I cut and placed my fan on the top left and that worked out well for pulling out that hot air that was just sitting there.
     
  2. itzme

    itzme Hall Of Fame

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    That makes sense. I cut out more of the rack's backing, too, behind the HRs. So I may experiment with placing the fan toward the glass, and toward the back.

    As the weather gets warmer, I'm seeing other posts like mine.

    BTW does anyone know at what temperature that I might expect the HRs internal fan to become quieter? Should I expect it to get quieter?
     
  3. Alebob911

    Alebob911 Hall Of Fame

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    Yeah as it cools down the fan should spin down to a lower rpm. I don't even hear any of mine. They run about 114.
     
  4. Bish

    Bish Mentor

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    Are the shelves solid? If yes, I would drill some holes in them under the center of the equipment. This would give you more flow so to speak. Looks pretty tight in there as far as vertical clearance above the receiver. I would guess the hot air is having a hard time getting up and around each shelf. A fan at the top should help but I would guess each receiver will locally stay pretty warm if the air can't escape the shelf.
     
  5. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Might even take this a step farther and make/cut slots in them.
     
  6. allenn

    allenn Icon

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    Replace the wood shelves with wire racks SAMS, COSTCO, Wallmart. You can paint them black.
     
  7. itzme

    itzme Hall Of Fame

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    All good ideas! If I could find wire racks that were 14.5 x 18 I'd certainly give that a shot, but Google shopping isn't being helpful, and I don't really have the tools to cut them.
     
  8. MysteryMan

    MysteryMan Well-Known Member DBSTalk Club

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    Try www.WorldMarket.com. Type in Media Furniture on their home page. There you will find a selection of affordable media furniture similar to what you have but with better component arrangements and ventilation.
     
  9. allenn

    allenn Icon

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    Lowes and Home Depot sell wire shelves and cut them.
     
  10. Alebob911

    Alebob911 Hall Of Fame

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    Just for the heck of it I turned off the fan above my HR's which are stacked like so, AM21,HR22,BLURAY,HR24,nomad and my 24 went from 117 to 124 but my 22 stayed the same at 114. No glass or anything on the front just a partial open back with a hole in the top middle for the fan. So for me any type of ventilation works.
     
  11. onan38

    onan38 Legend

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    +1 When i got my HR21-100 same thing happened ran hot then the fan was wide open. I took the cheap back panel off and has no problems since.
     
  12. davring

    davring Hall Of Fame

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    I mounted a 100MM computer chassis fan in the back of my enclosure near the top exhausting the hot air from the cabinet. Works like a champ.
     
  13. spartanstew

    spartanstew Dry as a bone

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    In every rack of components I've ever had, the A/V receiver always goes on top and I remove any glass doors. I've never had a problem with something overheating and have never had to use fans.
     
  14. MysteryMan

    MysteryMan Well-Known Member DBSTalk Club

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    While not denying the use of a fan will create cross ventilation why bother? As I posted earlier heat rises and will accumulate in confined areas. The simplest solution to the OP's issue would be rearranging the location of his components (A/V receiver on the top shelf, ect.) and elimination of the glass doors and rear panel.
     
  15. itzme

    itzme Hall Of Fame

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    The USB fan arrived yesterday, and so far thats the only idea I've had a chance to try. While I experimented with trying to achieve the Chimney Effect, I didn't have much luck. So I placed the fan toward the back of the HRs shelf where it grabs air behind the rack and blows it at the HRs. the backing of the rack on that shelf was already removed, so there is space back there by the fan. I've gone from readings in the mid 130s to the 120-125 range. The glass door is still intact, but ive opened it a crack. That all seems to have quelled the loud fan noise from the HRs, which was my main objective.

    I'm wondering if that temp range is safe, or if I need to get someone to help me with the other ideas (rearranging devices, holes in shelves, etc.).
     
  16. itzme

    itzme Hall Of Fame

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    FYI update...

    The USB fan has helped and my rack is fairly quiet again, with readings averaging 120 for the bottom HR and 117 for the top HR.

    Interesting observations... The USB fan is being powered by my AVR, so it turns off and on with my entertainment system. When I first turn on the system in the morning, it's reads a hot 127 or so. Sometimes the internal fans are whirring fairly loud. Then after some time, and I presume because of the USB fan, it all cools down, even with thr AVR being turned on. I think there's residual heat in the AVR after I turn it off, OR there's a good deal of heat being generated by the HRs itself, or both.

    Glass doors: believe it or not, I don't really see much correlation to temperature when the doors are open or closed. The door do quiet things, so I'm going to try to keep them.

    For now I'm going to hold off with the more work-intensive solutions. I'm a big fan of that USB fan!
     
  17. hdtvfan0001

    hdtvfan0001 Well-Known Member

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    Ventillation is always important for a DVR regardless of specific location.

    The 2 HR24's here - 1 located in a ventillated rack and the 2nd on a lower cabinet shelf. Both average temps stay in the 117-118 range no matter how much they get used (all day or for an hour).
     
  18. itzme

    itzme Hall Of Fame

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    Since we both have HR24-100s, I think that info is very helpful in forming a benchmark. You're basically telling me your venitlated rack (with no external USB fan, like me) is only 2-3 degrees cooler than my setup. Thanks!
     

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