Denon humming I have a low hum coming from my speakers when the volume is turned on. The hum does not increase with the volume knob. Also, the music that is played though the system is very distorted. The problem is in the receiver as I have another Denon AVR-3300 that works fine with the same hook up. I have read several post that explained DSP related problems. I have thoroughly inspected the DSP connection and the solder joints under a giant magnifying glass at the four corners. The DSP is located on the audio input card in the receiver and after moving a considerable amount of screws can be removed for inspection. I suppose the DSP could be faulty. Is there anything else that I should look at?

SOURCE: Denon AVR-1601 Receiver

Check capacitors in power supply......also check for over-heated
resistors..all 1 ohm.....replace if cooked...................T.

SOURCE: audio troubleshooting with an AVR Denon 900

ok i have the same reciver do you use hdmi to go to your tv or componet what ever you use there will be an audio out for rca on the cable box if you dont use a cable box keep reading but use hdmi to tcv then the rca audio out to the denon avr 900 obviously out it in the vdp/tv unput. and if you dont use a cable box your tv shoiuld have an audio output in the back of it for rca connect rca to audio output then other end to the denon avr 900s vdp/tv input

SOURCE: Denon AVR-3300 has a buzz from all 5 speakers during warm up.

Depending on the location you're living, try to connect a good ground to your system might solve the problem

Matt Vierra

• 75 Answers
• Posted on Jul 22, 2009

SOURCE: Denon receiver AVR-3300: Unstable source selection

Very important you have run system set up menu it configures your receiver with inputs analog or digital,speaker size,input,room correction etc Different input modes can be selected for the different input sources.
The selected input modes for the separate input sources are stored in
the memory.
q AUTO (auto mode)
In this mode, the types of signals being input to the digital and
analog input jacks for the selected input source are detected and
the program in the AVR-3300’s surround decoder is selected
automatically upon playback. This mode can be selected for all
input sources other than PHONO, MD/TAPE and TUNER.
The presence or absence of digital signals is detected, the signals
input to the digital input jacks are identified and decoding and
playback are performed automatically in DTS, Dolby Digital or PCM
(2 channel stereo) format. If no digital signal is being input, the
analog input jacks are selected.
w PCM (exclusive PCM signal playback mode)
Decoding and playback are only performed when PCM signals are
being input.
e DTS (exclusive DTS signal playback mode)
Decoding and playback are only performed when DTS signals are
being input.
r ANALOG (exclusive analog audio signal playback mode)
The signals input to the analog input jacks are decoded and played.
t EXT. IN (external decoder input jack selection mode)
The signals being input to the external decoder input jacks are
played without passing through the surround circuitry Your remote is searching for inputs because you did not properly run system set up!!! Here is a link to your manual [PDF] AVR-3300/1 3.3E*

Francisco Mauricio G

• 1551 Answers
• Posted on Apr 22, 2010

SOURCE: Denon avr 1907 low volume on all chans.with the

Maybe the audio amplifier IC are fried and need to be replaced