I know its been almost a year , but i had the same problem and after a few days i found out it was my optical cable causing the issue. The optical cable was brand new and all of a sudden it just started dropping sound for 1 sec every now and then. i changed the optic cable and all has been good since
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A typical stereo receiver / amp consists of switching low level input signals (CD, DVD, Phono, DAT, etc.), processing them and then output to the amplifier (low level) input for amplification to levels needed to drive speakers. The low level signals would barely be audible via an earphone, so they need to be boosted significantly in order to drive speakers.
Some amps provide jumpers to insert into the phono jacks on the rear of the amp to bridge the processed low level output signals into the low level amplifier input. You could install a Y cable here to feed two amplifiers - or - connect a tape recorder's "REC L+R" to the low level output and the "PLAY L+R" to the low level amp input so that you'd hear the actual audio as it had been recorded on the tape.
If you remove the jumpers (or tape recorder if used instead), there is no way for the low level audio to get into the amp's low level inputs for amplification.
I have the same problem as you, same receiver i bought while i was living in the US and then i moved to Spain and i have to deal with the big step down converter that i hate, i was wondering if you found a solution thanks.
Have seen regulated voltages drop a volt on two causing this problem . the regulator with the low output needs changing. Voltages can be checked pretty easy at the one large connector coming from the regulator sectionto the dsp board.
THE BEST SOUND IS WHAT SOUNDS BEST TO YOU, HOWEVER DO THIS:
1, USING THE SETUP MIC CONFIGURE YOUR DENON, PAGE 8 OF THE MANUAL. NEXT
2. RAISE THE REAR SPKR LEVELS, PAGE 46,47. NEXT
3. WHEN LISTENING TO AUDIO CD OR RADIO TRY THE 5 CH STEREO DSP MODE.
4. WHEN WATCHING A DVD USE DSP DOLBY PROLOGIC OR TRY 5CH STEREO IF THE MOVIE IS MOSTLY TALKING.
5, TRY 5CH STEREO WHEN WATCHING PROGRAMS WITH MOSTLY TALKING
After few sec when you turn on your receiver did you hear a click noise ? if yes your receiver is OK not in protection mode if no click noise is output protection in that case you must return where did you buy for service and update firmware a lot of update
However you can reset your receiver and debug the DSP section ( digital signal processor ) as follow
1. Press and hold down VCR/DVR button, then press STANDBY/ON button when the unit is Power on.
2. After " Clear " is displayed, the preset memory and each mode stored in the memory are initialized and will
return to the factory settings, and turn to Standby mode.
Now turn back on and check if it work or not and make sure check input mode such as analog or coaxial or optical input if stil no sound then debug DSP as follow
To set in DSP debug mode
1. Press and hold down DISPLAY button, then press STANDBY/ON button while the unit is powered ON.
The version number of m icroprocessor is displayed only for 3 seconds.
2. Press TONE+ button within 3 seconds above, the version number of 1st DSP is displayed.
3. Press DISPLAY button while the 1st DSP version is displayed. The status of DSP and DIR will be displayed.
FFFFFF0 0 000
Press STANDBY/ON button.
Then unplug the unit for 30 sec then plug in it should work now if not you need to return it to 1 of the service center Onkyo in your town to repair it
Without knowing the model number of the kenwood reciever and what DVD input (analog or digital) you are using, I can only give you my best guess at what is causing this.
If you are using analog input (RCA cable), try connecting another analog source into the DVD input and see if that cuts out. if so, the problem is in the reciever and may just be a broken solder connection on the RCA input jack, if not the problem is in the DVD player.
If you are using the digital input you may have a problem on the DSP board. This is a very hard problem to troubleshoot to a componet level and many times the entire DSP board must be replaced (if it is available, which is rarely with Kenwood).
DSP board repairs are all very difficult repairs for any service center.
The only way to really know what the problem is, if you have eliminated the DVD player as the problem is to take it to a service center to get checked out.
I will be happy to help you more if you can get me the model number of the receiver and also try to check the DVD player for this problem.
The A1 has an internal self diagnostic program which you can go through to find the fault. You can access the diagnostic program by simultaneously pushing some buttons on the front panel. The Yamaha service manual for the A1 tells how to do it and what the diagnostic codes mean. You can get a copy of the service manual on the web from several suppliers for a small fee.