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Onkyo TX-SR805 If I turn the volume up loud on my receiver, it shuts off, and the power light blinks red. If I put my hand on the top of it, I nearly burn my hand. I then noticed that neither of the fans, located on the sides of the receiver, ever turn on. I hate to be without the receiver, because everything I own is attached to it. Is making the fans turn on possibly a simple fix, or do I need to send off my receiver? Thanks, Jonny

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  • ohjonny Mar 23, 2008

    Thanks Dan. I'll go have it serviced...and sadly not have a receiver for a week or so.



    PS: I have a fan blowing air into it.

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When you turn up the volume, the amp works harder and generates more heat. There is a small transistor attached to the heat sink that detects the excessive heat and shuts down the amp before there is damage. There is a circuit inside that should detect the increased volume and turn on the fans. Either this detection circuit is defective or the fan driver transistor is defective. This unit may need to see a servicer. In the meantime, you can provide additional air flow to keep the heatsinks working efficiently. Realize that this is a short term "fix" and you should really get this repaired ASAP to prevent permanent damage to the amp components.
Dan

Posted on Mar 23, 2008

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