Question about Denon AVR-1708 Receiver

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Power/Standby mode blinking, what is the reason?

I connected the receiver to TV as well as the cable digital box, it has been running ok for about a month, suddenly, the receiver turning to standby mode automatically by itself and with its standby light blinking. Did anybody encounter this problem before?

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  • mitsy45 Jul 12, 2008

    We purchased avr-1708 with all the correct speakers and it worked great for about a month - Then it suddenly

    blinks red in standby mode and turns off - have checked all connections

    Do we need to return it to Best Buy?

  • lkrank729 Aug 09, 2008

    turns on then off......standby flashing

  • willem313 Aug 24, 2008

    Same thing, worked fine for about a month, now all of a sudden it just turns of and red power indicator flashes.

    Even with absolutely NO connections in at the back it still does the same thing.

  • Anonymous Jan 19, 2009

    My Denon AVR 1708 started doing this after 10 months and I called Denon. They told me it was going into "protection mode" because I needed a new Speaker Board. Because it was still under the 2 year warrenty they are covering the costs. I have not mailed it in yet, because it will take 3-4 weeks before I get it back. I'll let you know in a month or so how it turned out.

  • Floyd23 Mar 27, 2009

    The receiver suddently goes into standby / protection mode.

  • Anonymous May 23, 2009

    shuts off randomly. never play it that loud.


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I have a Denon AVR1708 and a Denon AVR687. Both had this issue and the issue is related to high temperature usage; like if the unit is in an entertainment systems with poor ventilation. I was able to fix both fairly easily. The issue is related to the voltage regulators on the power supply board on the 1708 and the main board on the 687. In my case, I had failures of the -15 volt regulator KIA7915PI. Both I believe were related to high temperatures.

You can get the regulator for as little as 50 cents at some online stores. The job on the 1708 was easy, however, on the 687 it was a bear. It took about 1/2 hour on the 1708 and 2 to 2 1/2 hours on the 687. The component is a lot harder to get to on the 687. The component needs to be unsoldered and removed and the new component soldered in. You will probably have to remove some caps to get go access. Thermal grease should also be applied to the new component.

Posted on Aug 30, 2009

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I have the AVR588 7.1 Surround A few models down from the on mentioned here. Same problem, turn it on then after warm up of a minute or so it shuts down and the standby red light flashes. It has the same part failure. KIA7915PI. Ive ordered 4 so I have backups since this seams to be a high failure part. I tried crossing the part to a higher quality part like NTE but I cant find one. My searches on the net I did find many have the same problem but noting on resolving it. The way I found the problem is I associated it as a termal issue so I got a can of freeze it at an electronic supply store and cooled several components one at a time cooling it to see if I could keep the unit on longer. Low and behold as long as I kept the KIA7915PI froze it would stay on. Im still waiting for the parts but to get by I have removed the transistor and soldered three long wires to the pc board in place where the transistor was and the part soldered to the other end. This is to extend the part out so that I can keep it cool in a glass of Ice. I dont recommend anyone doing this if your not familiar with electronics. I was careful soldering the leads of the transistor to the wires not to cross them and make sure not to emerge the leads of the transistor into the water as the ice melts. Crazy but it works for now. As I wait for the part i can kick back and watch some movies with some rum on the rocks as my receiver enjoys its 15v regulator too "on the rocks". LOL

Posted on Jan 23, 2010

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I took mine back to the supplier, it was fixed quite easily, apparently there is a small fuse on the protection circuit, replace the fuse, and it works.

Posted on Oct 31, 2008

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Hi sorry to hear,
I have several different Denons that all have the same problem.
The problem is that the capassitor cracks from a bad transformer over heating...IT'S A PRETTY COMMON THING that NONE OF THE STORE WILL ACCEPT.because it cost's almost 280.00 to fix.....They say that you have phsycally damaged it by playing it to loud, or hooked it up wrong, or crossed the wires AND THEY WILL NOT REPLACE IT....only if you know the president of the store and probably that wont even work. I THINK THAT IS A BUNCH OF ****...,But its true ..thoes are sign's of abuse.
I have not found anyone that had thiers FIXED. The same thing happend to me...I HAD TO JUNK IT... I do fix them for other problems, but the blinking and no sound and shutting off will protect you from a meltdown and possible FIRE.

I do have a couple better units for sale with a return policy 365.95...denon, Harmon, Onkyo

Posted on Oct 30, 2008

  • Rick Fermazin Oct 31, 2008

    Hi again

    have you found any repair manuals?. I hate to tell you that there isnt any for aprotection mode. The only hrl that you can get is to sell it befor it burns up ....SAD to say so .

    I will help you out with paying you for parts.

  • Rick Fermazin Nov 11, 2008

    Hey ...found out whats going on ...Inside on the right side is a smaller Heatsink. it heats up and gives you the red Blinking light ...thats trouble ...try the fuse , its not going to work.

    Like I said befor it going to cost some buks.

    There are 7 resistors and 2 capasidor's that need to be fixed from the heatsink thats conected to that board ...its Resisters 103, 104,5,6,8,113 and 115 then the small heatsink replace that ..then shes good to go at 238.00..cheapest that I can do it for myself even.

    Just CONTACT ME TO HAVE ME BUY IT FROM YOU FOR PARTS ,or try to fix it ...its a 55to45 chance.

    if any one reciver is older than a month have fun.


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