I have a Denon receiver AVR-2105 - about 8 years old. Worked amazing well up until yesterday. Now when the power turns on, after about 5 seconds it automatically shuts itself off and the power indicator ring blinks red. The book says it's either overheating or speakers are shorting out. I've ventilated it for hours, nothing around it. I've also disconnected all speakers - it's still doing the same thing.Any suggestions?
already put in my explanation?
Hey you tried resetting the processor yet?
Additionally, is the red light blinking continuously, or in a pattern (such as 3 blinks, pause, 3 blinks, pause, etc.)?
Any clicking sounds, buzz or hum coming from the unit?
no sounds, buzzing, or humming.
red light is blinking continuously (no pattern)
haven't tried to reset the processor - not sure how I would do that or what it is...
Thank you for the reply.
Please try the following steps. Unplug the unit from AC power, for one minute. Then plug it back in, and press and hold the "Speaker A" and "Speaker B" buttons down together, and press power once. Continue to hold the speaker buttons down until the display starts blinking at 3 second intervals. Then release these buttons and hte processor will be reset. please try to operate the Denon and let me know if you have the same problem.
no - held down the speaker buttons and turned power on - the entire display began blinking every second. Continued to hold down the speaker buttons for >2 minutes but the blinking never slowed to 3 seconds. Once I released, the unit was already on (illuminated green), but then after ~ 3 seconds it shut itself off and the power display began blinking red again
The display would not change it's blinking frequency. The fact that it blinked at all indicates that the processor successfully reset. The problem is an internal failure within the Denon that will require service.
The unit needs the output transistors replaced inside the unit. These directly drive the loudspeaker outputs on the receiver itself, and one or more of them being shorted (closed circuit), will trigger the error on the display of the receiver, and it will not go off until the problem is repaired. They are not user-replaceable as they are PCB mounted, and thermally coupled to a heatsink. In this case, the unit is in need of service.
If you'd like, you can use the link below to locate a service center in your area:
If you need further assistance let me know.
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I've been setting up Home Theater systems, and troubleshooting them for over 20 years.