Receiver running HOT

Discussion in 'Home Theater & Video' started by Delibird, Jun 11, 2018.

?

Enough room?

  1. Yes

    1 vote(s)
    20.0%
  2. No

    4 vote(s)
    80.0%
  1. Delibird

    Delibird New Member

    Messages:
    1
    Hi all,

    This is my first post, so please go easy.

    My Technics receiver has recently been relocated to a new home, and has been running very hot. I can play music or video games with it powering my speakers, and after half hour, it's blazing hot on top. There are small vents cut out on the top, for the heat sink to dissipate heat, but it becomes untouchable. It even heats up the wooden shelf above it to a very high temperature.

    I'm starting to worry that I will be doing damage. It's never gone into safe mode yet, but I'm afraid I'll be cooking something in the mean time. I have yet to take it apart to ensure all capacitors are looking fine, in addition to checking the rear exhaust fan.

    Main question:

    Is this enough room on top of the receiver? Should I give it more room to breath on top? There is about 7cm (2.7inch) of gap.

    Let me know.

    Thank you!
     

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  2. hemiram

    hemiram Active Member

    Messages:
    192
    Location:
    Toledo, ohio
    Welcome!

    IMHO, no, it's not enough room, and there should be venting in the rear and even on the bottom, if possible. Oh, bad caps won't make it hot. Did/do you have pets? If so, have you opened it up and sucked the hair out of it? I do all my stuff annually, and there is ALWAYS hair in them, even the stuff the cats don't lay on. My PC is nowhere near where my cats are, or where my dogs were when they were alive, and there was hair from both in the fans and power supply/ It's on a table 30" off the floor, and the hair is amazing.

    Stacking stuff like this is bad news, and should be avoided if possible, IMHO

    A simple test would be to take it out of the cabinet, hook the speakers up, and see how warm it gets. If it gets even remotely as hot, there is a problem with it. If it's as cool as it normally is, it's the cabinet. I would bet on the cabinet
     
    Bill Ferris likes this.
  3. Grenadeslio

    Grenadeslio Super Member

    Messages:
    1,551
    If the shelf above were shortened in the back to allow the heat to escape you might be ok, otherwise it will always be an issue. More room on the sides wouldn't hurt either.

    I've stacked equipment much closer but with plenty of breathing rm all the way around without issue, your receiver is encapsulated.

    Swap the X-Box and disc player with the X-Box now on top of the receiver, use some Vibrapods under the game system for additional spacing. Preferably the receiver should have that space to itself, but if the game system doesn't create a lot heat also then it's smaller footprint should allow enough ventilation.

    vibrapodtop (1).jpg
     
    Last edited: Jun 11, 2018
  4. toxcrusadr

    toxcrusadr AK Subscriber Subscriber

    Messages:
    31,071
    Location:
    Central Missouri
    You can lay a small computer cooling fan right on top of the vents to pull air up through the receiver. Put some stick on felt or rubber circles on the corners. A 12VDC fan can be hooked up to a 3, 6 or 9V wall adaptor and it will run at proportionally lower speed. If you have one of those selectable multi voltage adaptors you can try it out at different voltages. Here's a small one at PE that's very thin and only $2.49.

    https://www.parts-express.com/jmc-4010-12-12-vdc-40mm-x-10mm-brushless-3-wire-micro-fan--259-149

    If you run it at reduced voltage it'll be totally silent and you don't really need a ton of air flow, just a little help.
     
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  5. imral3

    imral3 Well-Known Member

    Messages:
    834
    Location:
    Clementon, New Jersey
    Was it sitting in the empty space up and to the left before?
     
  6. Bob

    Bob AK Subscriber Subscriber

    Messages:
    1,883
    Location:
    West coast
    I'd put the receiver in its own shelf that has the most amount of (air) space to the sides
    and the top. then run a USB powered fan to suck/blow air from heat to exhaust. there
    are silent ones. (or drill holes in the back and drive a fan to suck it out the back and
    use a switched power receptacle from the receiver to power the fan.

    your heat buildup is probably due to lack of airflow where the receiver vents are.
     

     

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  7. savatage1973

    savatage1973 Addicted Member

    Messages:
    5,267
    Location:
    NW Pennsylvania snow belt
    In the original post, it is noted that there is a rear exhaust fan already in the unit; however, it may not be effective since there is no rear opening and the confined space is pretty tight.
     
  8. Yamaki

    Yamaki Not For Hire Subscriber

    Messages:
    3,604
    Location:
    Hillsboro, Oregon
    One thing to check is the specs of your receiver amplifier output & what your speakers draw.

    I burned up a Denon AVR by trying to drive speakers that significantly exceeded the AVR's specifications.
     
  9. toxcrusadr

    toxcrusadr AK Subscriber Subscriber

    Messages:
    31,071
    Location:
    Central Missouri
    I missed that about the fan. It definitely needs more space for air flow around it instead of more fans. :biggrin:
     
  10. awillia6

    awillia6 Well-Known Member

    Messages:
    963
    Which Denon AVR and what were the circumstances of its demise, if you don't mind my asking?
     
  11. jami w.

    jami w. just being me thats all

    Messages:
    3,376
    Location:
    New hampshire
    if it ran cooler before the move? my bet is cooling issues, is it the same cabinet your using, from the old place? or its a new cabinet in pics above?
    you never mentioned it.

    if the cabinet shelf is enclosed? cut out the back of shelf where reciever is only. and have it be the only piece of gear on shelf. need more venting on the top, fyi i keep at least 5" open space above reciever. an have the back part cut out.

    try that see what happens, and let us know.
     
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  12. savatage1973

    savatage1973 Addicted Member

    Messages:
    5,267
    Location:
    NW Pennsylvania snow belt
    With slightly over 2 1/2" of open space above the receiver, it should cool effectively with the built-in fan (assuming it is working properly) AND that something is done to allow the hot air to escape--cut a hole in the back of the cabinet, or shorten the depth of the shelf above. As is, there is no place to vent the hot air out of the confined space, so the fan is just recirculating the hot air--great for a space heater, not so much for cooling an amp. "Christina--bring me the axe!!!"

    EDIT--BTW, you are doing your XBOX no favors by having it sitting on the shelf above, which is essentially (by default) a "makeshift hotplate".
     
  13. Quadman2

    Quadman2 Super Member

    Messages:
    4,213
    The Technics do run hot. This I know from having one. It's also been mentioned by others who own them by their comments on different threads before.

    Make certain that you have this unit in a space/area where there's lots of free air flow. When running mine, I used to have the glass doors wide open, and took out the back section of a sectional tall type entertainment centre.

    Some good ideas shared already. You will only touch the screened area once on the top of this receiver! Trust me on this.

    Q
     

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