Question about Denon AVR688

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My denon receiver 688 keeps turning off despite having a fan on it.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: No audio from PS3.

If you are hooking your PS3 through HDMI, there will be no sound since the Denon does not support sound through HDMI. I am using a Fiber Optic cable for my sound.

Then go into your Sound Settings in your PS3 and select what sound source you are using.

Posted on Feb 24, 2009

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SOURCE: No video on Denon avr 688

After days of frustration the real problem was with the cable box. It needed a firmware update. Following forum advice I disconnected the cable box power cord for a few minutes, reconnected it, allowed the cable box to reinitialize. Turned off receiver and TV. Turned TV back on and set it to HDMI connection, turned on receiver and all worked fine. Great picture and sound.( Needed to buy an optical cable to go from the cable box to the receiver to get sound from the speaker system. )--the dirtybird

Posted on Apr 15, 2009

smarthome2
  • 1114 Answers

SOURCE: My receiver keeps truning off despite having a fan

The most common problem found on FixYa for Audio Video2_bing.gif Receiver's is:

My receiver say's "Protect" or turns on then off. What's wrong? Seven times out of ten it is a shorted speaker or speaker wire. To determine your exact problem, the first step is to disconnect all speaker wires "at your receiver" Next: Turn the receiver back on. If your receiver still says "protect" or turns off, it needs to be serviced. If your receiver stays on; reconnect your speakers one at a time and power back up after each speaker. You may find that after reconnecting all speaker wires it works! Most commonly the small braids of wire from the + to the - have touched and have caused the problem. In some instances, you noticed the problem only when turning the volume up. either way, make sure the exposed wires to your receiver are no longer than 1/2" long and are completely under the screw down terminal or slide in. When you've found the wire or speaker with the problem, your receiver will go back into "protect" At this point, disconnect the wire from the speaker at the speaker that may be causing the problem then test again.* Note* Make sure speaker wires do Not touch each other as this Will cause a short! If you turn the receiver back on and it stays on, you now know the problem is in your speaker itself. To test your speaker, you will need a multimeter. Set it to ohms resistance and touch the speaker terminals, if there is a short internally the meter will read "1......" If it's an analog meter, it will peg to the right. There's your problem. Now, within any speaker there are quite a few possibilities as to what could be causing the problem. Most common is a blown coil and the speaker needs to be replaced. Some speakers have internal crossovers (usually floor standing speakers) and may have a shorted or burnt board (usually very visible brown burn marks on the board) and can possibly be repaired if your handy with a soldering iron. Now, if you disconnect the speaker wire at the speaker and it still says "protect" Check your wire for the obvious cut or nail thru the wire if possible. If your system has wiring that runs behind walls, you may need to use your meter again. Disconnect the wire at both ends, keep the ends separated, put your meter on ohms resistance and touch probes to the + and - wires at one side. If the meter pegs to the right or reads "1...." the wire is shorted and needs to be replaced or repaired at the short. Hope this helps.

Posted on Jun 15, 2010

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1 Answer

I have a problem connecting my avr 688 into my tv, i dont vave the manual on how to connect so if possible, i want to have one


i guess you want tv sound coming out of you denon.you will need a red and white rca lead. one end into the back of the denon.either LD,AUX,OR VIDEO.then turn the selector on the denon to the input you plugged into.hope this makes sense

Oct 17, 2010 | Denon AVR688

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Programming a Denon AVR-1907 to activate the sub-woofer


In the setup menu on your denon receiver make sure the subwoofer setting is set to ON or YES.

Feb 28, 2010 | Denon AVR-1907 Receiver

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Receiver shuts off as soon as I turn it on


having the same problem. it doesn'T Shut off immediately. but after 30 seconds or if I turn the volume up, then it shuts off

Dec 05, 2009 | Denon Audio Players & Recorders

1 Answer

How to set up trebble or bass without a remote on denon dvr 688?


1. Press systems setup. Then press Enter.
2. Press the left or right arrow to select then press enter.
3. Press up, down, left or right and then make your selection and press enter.
4. Press enter to confirm selection.
5.

Oct 28, 2009 | Denon AVR588 Receiver

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Denon avr-688


I have the same problem with my AVR-688, were you able to find a help?

Sep 18, 2009 | Denon AVR688

2 Answers

Avr 688 shuts down immediately after powering on


Internal problem with power supply or one of the channels. Bring it to a repair facility.

Aug 09, 2009 | Denon AVR-685 6.1 Channels Receiver

1 Answer

No video on Denon avr 688


After days of frustration the real problem was with the cable box. It needed a firmware update. Following forum advice I disconnected the cable box power cord for a few minutes, reconnected it, allowed the cable box to reinitialize. Turned off receiver and TV. Turned TV back on and set it to HDMI connection, turned on receiver and all worked fine. Great picture and sound.( Needed to buy an optical cable to go from the cable box to the receiver to get sound from the speaker system. )--the dirtybird

Apr 14, 2009 | Denon AVR-3300 Receiver

1 Answer

Denon AVR-688 Dolby Digital issues


IT IS ALWAYS BEST TO CONNECT ANALOG AUDIO IN ADDITION TO THE OPTICAL, COAXIAL OR HDMI AUDIO CONNECTION. IF USING OPTICAL OR COAXIAL CONNECTIONS BE SURE TO CONFIGURE IT IN THE RECEIVERS DIGITAL ASSIGNMENT AREA IN SETUP.
ALSO, ON THE FRONT OF THE RECEIVER IS AN INPUT MODE BUTTON, PRESS THIS BUTTON UNTIL AUTO IS DISPLAYED

Jan 03, 2009 | Denon AVR688

1 Answer

I have the denon avr-688 - when i use the mic to auto setup, i have sound from each of my speakers, but when trying to watch tv or a blu ray movie there's no sound at all


Check your blu-ray connection. Is the HDMI cable going from the player to the receiver, then another HDMI cable going from the receiver to the television? What about your TV input? Is there a cable going from the cable converter box to the receiver's input?

Dec 29, 2008 | Denon AVR688

1 Answer

I have a new Denon 688 7.1 CH reciever. I did a sound test on all speakers and they all worked. I hooked up Satelite rec HDMI and PS3 HDMI to reciever and then an HDMI from reciever to TV. I have Picture...


The Denon 688 does not process sound via HDMI, you have to run a seperate cable to get sound. Choices are analog audio jacks (red and white) or either a toslink (optical) cable or an rca digital audio cable.

Cheers!

Mar 15, 2008 | Audio Players & Recorders

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