Question about Yamaha HTR-5840 Receiver

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Shuts off My Yamaha HTR-5840 won't stay on after I push the on power/stand-by button. It stays on for a few seconds and then a click sound is heard before it goes off. I reattached all speaker cables, then removed them one at a time, then removed them all and it still happens. Thanks for your help. Brian

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  • Anonymous May 13, 2008

    Hello my name is Terry I have this same receiver,I have 4 main speakers,2 rear surround speakers and a subwoofer,dvd player ,cd player,and hi definition digital personal video recorder.After playing my stereo at 70% volume level for about one & half hours the stereo turns itself off ,I turn it back on ,sometimes it shuts off again right away,other times it takes ten to twenty minutes to do it again.I have tried running just 2 main speakers instead of 4 and it still happens.I took the receiver into a electronic repair shop and they ran some test and found nothing wrong with it.After bringing it back home and hooking it up to the rest of the stereo,the same continues to happen. Please help if you can.

  • holmem May 26, 2009

    I have the same receiver. I moved my system to another cabinet, noticed that after years of being crushed too tight in the back, the panel with the speaker connections is warped and pushed in. When I first reconnected my speakers, I had a failure that was also immediately tripping the shutdown and powering off. Then would display "check speaker conn" when powered back on. The speakers are all ok (work on other channels), but this one rear channel now has no sound, but no longer trips. I'm assuming I've either lost the amp, or there is a physical fuse (componet type) somewhere. Can I get a schematic or just a diagram of where to look, or possibly help with identifying which transistor to go after? Is it possible the speaker post has broken loose from the internal connection to the board? Thanks!

  • Anonymous Mar 13, 2014

    I used to hear sound effects out of the rear surround speakers but haven't heard anything in a long time. Could I have possibly turned it off somehow on the remote?

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Brian, you have a system failure in your audio amp section. this is a multiple channel amplifier and you have to get it checked only by service personnel. your power outputs transistor probably busted and your unit wont stay because that is your protection circuit working. it protects your unit from further damage.

and for the other comment, your unit will shutoff after long epriod of time at 70%, you need more ventillation to your unit. i would suggest that you use a small fan or blower and place on top of the unit. this will provide more air circulation to your amplifier. The units is tripping already at high temperature and 70% is already a long way to go at more than an hour with all channels working. adwditional ventillation only will help you. dont let it happen though always or it will damage you amp and end up like the later unit that turns off after few seconds. busted output stage already.

Posted on May 14, 2008

Diode problem

Posted on May 11, 2008

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