When I press the power button on the Denon AVR-683, the receiver appears to go through a short system check then turns off again. Probelm used to occur occationally - now receiver won't work at all. It acts like a power relay is not staying "latched" on.
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Re: Denon AVR-683 won't stay on
Replace all the electrolytic capacitors in the power supply. i had the
exact same problem with mine and once i replaced the capacitors it
powered up and stayed on and worked perfect. these capacitors tend to fail as they're of poor quality. this fault is very common on denon receivers, especially the later models.
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power off the unit using the front panel Pwr switch
press and hold SPEAKER A and B buttons;
keep pressing on the speaker buttons, switch on the AVR
when the display is blinking release buttons Check the attached links,instruction and guides, Good luck
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This is because your unit goes in to protection mode because of some bad connection in the input/output section .Disconnect your spkrs,inputs..turn the volume is Down all the way and power it up,Check your wiring for shorts at the inputs and outputs.
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I connected by Roku to a Denon 1804 Receiver this way:- I plugged the cable that came with the Roku into VCR2 input jack of the Denon. (I used VCR2 because it was available).- Using the remote from the Denon, I made sure the slide switch was on "Audio." (See page 20 of Denon Manual).- I pressed pressed the System Setup button- *System Setup appears in display of Denon- Using the cursor buttons I scrolled to menu Digital in Assignment- I set Menu item 16 Coaxial to VCR2 since that was the input jack I used for the Roku. - After making the selection press the CH Select Enter button to save- To exit the System Setup press the System Setup button again- When using the Roku, select the input source as VCR2 (or whatever jack you used). You should now have sound through the Denon.The most important step is to read the Denon manual starting on page 20
you must check first the fuse in the power supply which getting blown.if the fuse blown with darkened black color that was mean there are other component parts in the power supply or in the board which get bad. if you know how to test component, check shorted bridge type diode as will as regulator ic and FET transistor in the power supply board.
If the light is staying on after you unplug the AC power this means you have a short in the loop some where that is giving power to the receiver.
Try unplugging all connection to the receiver except for your speakers. Next hold down the power button for 45 to 60 seconds. Doing this will clear the flee power off the system board. Next plug back in the AC adapter and the receiver should turn on. If it does not then there is a problem with the receiver it self. If you did have a device shorting/grounding out to the receiver over time it would have damaged the receiver.
Not familiar with this model but seems like the protection circuit is kicking in, this could be caused by an imbalance of Ohms between channels or a short. remove & check all speakers and cables for continuity or shorts, does the unit power on without speakers or in a different mode (surround off).
always add speakers in pairs (L&R) before testing to prevent possible protection circuit, test main speaker pair first then add surrounds (all according to the allowable Ohms range for the amp of course)
Turn the unit off by main switch (not a standby button). Press and hold "Speakers-A" and "Speakers-B" buttons and turn on main switch. Display blinks. Release the buttons after 3 seconds. Receiver is reseted.
Are you connected with video cables to a tv or "monitor" this is more than likely were the setup is visible for speaker configuration, input assignment etc, most denon receivers work this way so I would suspect you need to re-check the video connection until a set-up picture appears.