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#300700 - 04/07/10 06:38 AM Re: Coolng AVR [Re: grunt]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6725
Loc: The Peoples Republic of Il.

I've ran the 707 all day without shut down but the excessive heat can't be good, I wouldn't think. I'll probably set up some type of fan to run and put it on a switched outlet on the power center.
_________________________
Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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#300713 - 04/07/10 10:38 AM Re: Coolng AVR [Re: Wid]
BobKay Offline
connoisseur

Registered: 03/23/10
Posts: 3268
Loc: Massachusetts Badlands
I don't think it's so much a worry about shutting down. Keeping any unit cooled will (should) prolong it's life. Remember when the office "computer" was in a big glassed-in room with a raised egg crate floor and always super a/c'd?
_________________________
"If you really mean what you say, and no one believes you, you're home free!" Cassandra

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#300715 - 04/07/10 10:57 AM Re: Coolng AVR [Re: BobKay]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6725
Loc: The Peoples Republic of Il.

I dug up and old case fan and wired it up to an ac to dc 12v adapter. I'll see how well it works, I might need one that can move a bit more air.
_________________________
Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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#300721 - 04/07/10 12:08 PM Re: Coolng AVR [Re: Wid]
tomtuttle Offline
axiomite

Registered: 06/20/03
Posts: 8347
Loc: Tacoma
 Quote:
I dug up and old case fan and wired it up...


That's what I did, Rick (TX-SR805). I found an old power supply that had a smallish plug (rather than a wall-wart) and just plugged it into the switched outlet on the back of the receiver. I have two fans running off that supply - one blowing down into one side of the unit and the other blowing across the top (it is in a semi-enclosed rack). Noise is not an issue.

My understanding is that a good part of the heat problem comes from the video processor, not the amplifier. That's why I have the fan blowing down into the right-rear of the unit (yours may have different architecture).

Both Peter and I have "vintage" Onkyo receivers also. I know mine runs warm. I also know it's been running almost non-stop for about 15 years.
_________________________
bibere usque ad hilaritatem

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#300724 - 04/07/10 12:16 PM Re: Coolng AVR [Re: tomtuttle]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6725
Loc: The Peoples Republic of Il.
I had an Onkyo 502 before this, it didn't run quite a hot as this newer unit does. I figured as you say Tom, it's the processor so I have it pulling the hot air up. The fan is located at the right rear.
_________________________
Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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#301318 - 04/10/10 10:34 PM Re: Coolng AVR [Re: Wid]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6725
Loc: The Peoples Republic of Il.

I ended up replacing the fan I had with a 120mm fan. It is connect to the power center on a switched outlet. The bigger fan does quite a good job cooling the Onk.
_________________________
Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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#301350 - 04/11/10 09:48 AM Re: Coolng AVR [Re: Wid]
Adrian Offline
axiomite

Registered: 12/27/08
Posts: 6670
Loc: It's all about the location.
Did you take any comparative temp readings after installing the fan, Rick?
_________________________
Half of communication is listening. You can't listen with your mouth.

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#301351 - 04/11/10 09:52 AM Re: Coolng AVR [Re: Adrian]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6725
Loc: The Peoples Republic of Il.

Yes I did. The ir therm read 106°F after 4 hours of running at near reference levels. Before the fan was installed it was reading 128°F after heavy use.
_________________________
Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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#301363 - 04/11/10 11:37 AM Re: Coolng AVR [Re: Wid]
Adrian Offline
axiomite

Registered: 12/27/08
Posts: 6670
Loc: It's all about the location.
Excellent! that's a huge difference.
_________________________
Half of communication is listening. You can't listen with your mouth.

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#301368 - 04/11/10 12:51 PM Re: Coolng AVR [Re: Adrian]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 17876
Loc: NoVA
Very impressive difference. How's the fan noise? Do you know offhand what brand of fan it is?
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I am the Doctor, and THIS... is my SPOON!

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