Question about Harman Kardon AVR 435 Receiver

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Overheating? after running for about 30 minutes, my receiver shuts down. I have other components stacked on top of it in my entertainment center and am concerned that configuration may be causing it to overheat. Is this a common problem for this receiver?

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Re: Overheating?

Havent seen too many of these overheating but try and give it more space to breath and also check all speaker connections to make sure no stray wires,.

Posted on May 26, 2007

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New Denon AVR-E400 runs very hot and shuts itself off.

It is new so take it back and get a replacement.

Mar 10, 2014 | Denon Audio & Video Receivers

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Hi im wondering what the cause of overheating in CYRUS III Amp!! Anybody had the same issue, after using a high volume for 30 minutes or so, then the protection relay operates!! Best Regards, Mac

Protection mode is there to prevent your receiver from overheating to the point of failure. Try this. Make sure it is ventilated real well. Put it by itself. Don't stack anything on top of it. Even if it has a fan I us a little fan behind my receiver to circulate that warm air off of it. This works real well. Make sure your receiver is setting on a nice hard surface too. Not carpet or anything shaggy like that. Receivers and amplifiers will go into protect if they are rode real hard. Keeping it as cool as you can will minimize this. You can also turn the bass and or gain down on it a bit every now and again to help it cool a little bit. That receiver has final transistors in it that get war as power increases along with the time it is increased. Keep it cool and your it will stay out of protection mode.

Mar 22, 2011 | Yamaha HTR-5790 Receiver

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NAD T747 Shutting Down

get a fan or do a the back of the e-center, Yes it will do a thermal shutdown... just like 3 mile island

Dec 10, 2009 | Audio & Video Receivers

1 Answer

REceiver states "over heat" on it. What is going on?

The unit is overheating so it turns on the thermal protection.

If the unit lacks proper ventilation, it will overheat and turn on the thermal protection (e.g. there are several other units stacked on the top of the receiver and they are all enclosed in a tight shelf).

The problem may also be:

- a bad solder joint on any of the components, especially the ones that tend to produce heat

- damage to any of the components

- bad / oxydized connection contacts somewhere inside the unit.

Hope you can solve it.



Sep 29, 2009 | JVC RX-D205 7.1 Channels Receiver

1 Answer

My receiver shuts down frequently , wakes back after 2 or 3 sec .

do you have sufficient space around the unit? If it is in an enclosed space, has other components on top, etc, you may be overheating the receiver. Once it gets too hot it can potentially cause the issues you mention above.

If you have other components on top, try moving them to another shelf or below the receiver, and if you have a door on an entertainment center, leave the door open to help with air flow.

Jul 29, 2009 | Yamaha RX-V663 Receiver

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Center channel goes muffled after a while of use.

It is likely that something overheating is causing the problem, but nothing should be overheating. Cleaning won't hurt and may help but it is likely to require repair of the faulty component, perhaps a failing capacitor or amplifier.

Dec 29, 2008 | Marantz SR-19 Receiver

1 Answer

Sound turns on and off intermittantly through unit

You may have a bad protection relay or solder joint at the relay mount position. This relay prevents power supply "thumps" when the unit is first turned on, and also shuts the amp down when there is an overload problem....accordianman

May 29, 2008 | Yamaha RX-V661 Receiver

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Shuts down at high volume

If you have your reciever in an entertainment center that is enclosed or a tight fit for the reciever you need to remove it and put it on top of the center. I have a VR407 and it was doing the same thing. This keeps your unit much cooler and the overheat relay will not turn it off. also I found it much easier to add or wire components much easier.
Steve T. PA

Nov 25, 2007 | Kenwood VR-407 Receiver

1 Answer

Technics receiver SA AX540 overheating

is the fan turning on? many models like these have a cooling system (fan) that kicks up when the volume is turned to a certain level. if your fan has never been on, then chances are some of your soldering points have shifted or gotten a little messed up over time from the heating/cooling effect. this model runs extremely hot especially right where the vent is on the top of the cabinet. make sure that it is not in a shelf or enclosed area. dont stack other items on top of it. use an external device to control the volume so that you can have the receiver volume at a fixed level where the fan will turn on. if your sound still doesnt work, you should consider buying a new receiver or try your local craigslists forum. make sure if you buy a new one, that it is a more expensive model from a brand like sony and check the model online for known problems. stores like best buy offer extended warranties on most of their products which are very wise investments. good luck sinbad

Dec 03, 2006 | Technics SA-AX540 Receiver

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