20 Most Recent Denon AVR-E400 - Page 4 Questions & Answers

" "I have seen a manual I which it said that dc issue, do anyone know how to disable the power on fault checking" You cannot do this. Protection can only be kicked out when no dc is coming out from speaker terminals. This holds no mater whether differential and voltage amp are defected (leakage) or protect detection SMD transistor(s) is/are leaked. They act as a switch. Download X2100W service manual and enter debug mode to check if DC or ASO(over-current protect ) makes protect.

Denon Audio... | Answered on May 29, 2019

“My reomote sensor is not lit and I have no sound coming from speakers” For your symptom, not related to remote sensor but to digital decode board such as DIR,DSP and LPF. Download service manual and enter "debug mode" to locate defective circuit(s).

Denon Audio... | Answered on May 27, 2019

download AVE1907 service manual and check all voltages supplied to panel including (positive and negative voltages as well as an AC voltage.
). If they are correct, replace all capacitors located on this board.

Denon Audio... | Answered on May 19, 2019

Its possible you have a bad audio driver board that once it heats up starts causing that problem. Try taking to radio shop unless your good with electronics.

Denon Audio... | Answered on Apr 26, 2019

Download your av-amp model service manual to solve the problem.

Denon Audio... | Answered on Apr 24, 2019

Page 8 shows the input options. Cable should be the same as FM input:

Denon Audio... | Answered on Apr 21, 2019

“The switching from one source to another has sucked since day one.”Problem comes from front panel, switches, OR CPU switch control circuit.

Denon Audio... | Answered on Mar 30, 2019

“Denon AV 1801 doesnt appear to power up even though the screen comes up.”Screen lit up means CPU does not have any problem. Did it power up within 5 second? If yes, find out which protection is now working. “Also there is no sound output” May be DSP problem. Remember to download AVR1801 service manual to check protection and DSP problem.

Denon Audio... | Answered on Mar 24, 2019

“when up & down scan buttons pressed, just keeps scanning w/out finding station. it does lock into a station when manually scanned. need reset & if so, how?” Don't worry. Your amp is normal. Your situation happens to any denon, onkyo and yamaha av-amp always due to extremely sensitive tunning unit. No need to reset. Tune any wanted station by another radio and jot freq. down. Enter desired freq. into the av-amp and store it.

Denon Audio... | Answered on Mar 17, 2019

May be DSP problem enter debug mode to confirm. Download denon1709 service manual first.

Denon Audio... | Answered on Mar 15, 2019

The receiver is in protection mode, which means you have a problem in the power supply unit ... needs servicing.

Kind regards

Denon Audio... | Answered on Mar 07, 2019

I fix these receivers for a living and can tell you with certainty that the problem you have is one that will require the replacement of several parts. You will need to know how to solder and be able to purchase the proper parts.

There are 3 different most common reasons that they go into the protect mode, which is what is happening to your unit now.

1. Has a blown output channel in the amp that will require the replacement of both output transistors of the bad channel and the replacement of several resistors and a coupld of other transistors and a capacitor in the affected channel. You wil lneed a multimater to be able to check and findout which channel is bad. I can supply you with the part numbers you will need for the repair if you plan on doing it yourself.

2. A voltage regulator in the power supply is bad. They have several voltage regulators and it is a common problem for one to go bad. Once again you will need a multimeter to check and find which one it is and then get the part and replace it. I can supply the part numbers for you if needed.

3. A resistor that supplies the amplfier circuit has opened up and needs to be replaced. This is the least expensive repair, but not as common as the other two. Only one resistor would need to be replaced. You need a multimeter to verify that it is bad, I can tell you which resistor to check and loet you know by the readings with the meter if it is bad.

Those 3 problems are the most common reasons for the receiver to shut down like your is doing. I work at an authorized Denon repair center and have repaired hundreds of Denon recievers so I am certain that the problem you have is one of these three listed.

Let me know if you plan on trying to fix this yourself and I will guide you thru the repair and even email you the service manual for a reference to do this repair. It is not an easy job, but it is the problem you are having. As I said before, I fix these receivers all the time myself, and I know how to fix them. Let me know if you want further help with this.


Denon Audio... | Answered on Feb 27, 2019

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