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.
Just found this thread. Thanks for all your time in assisting everyone. I'm an old tech from 50's and have serviced about anything electronic. I have found in my Denon avr 1804. one channel has shorted outputs, 4 .22ohm resistors and a .47ohm resistor, these are all open. Don't know the wattage. They look like metal film 1watt for the .22's and perhaps a 1/4 watt .47. Not sure. Also don't know the process to balance the output without the manual. So asking for resistor wattage and if you have the pdf, that would be neat. Don't know how we accomplish this. Also have read that there is a resistor change in the power supply, questioning that as wellJust found this thread. Thanks for all your time in assisting everyone. I'm an old tech from 50's and have serviced about anything electronic. I have found in my Denon avr 1804. one channel has shorted outputs, 4 .22ohm resistors and a .47ohm resistor, these are all open. Don't know the wattage. They look like metal film 1watt for the .22's and perhaps a 1/4 watt .47. Not sure. Also don't know the process to balance the output without the manual. So asking for resistor wattage and if you have the pdf, that would be neat. Don't know how we accomplish this. Also have read that there is a resistor change in the power supply, questioning that as well
Dave DeGain, I have a receiver with this problem, Being an electrical engineer I can troubleshoot and do the repair myself although your experience and knowledge would be extremely helpful - this is not what I do! Are you still able to provide a PDF of the service manual? If so, how can I get you my email address? If not is there a way I can get one elsewhere? Thank you!Dave DeGain, I have a receiver with this problem, Being an electrical engineer I can troubleshoot and do the repair myself although your experience and knowledge would be extremely helpful - this is not what I do! Are you still able to provide a PDF of the service manual? If so, how can I get you my email address? If not is there a way I can get one elsewhere? Thank you!
1. Switch off at unit's main power switch. 2. Hold A & B buttons and turn power back on. 3. Check entire display is flashing at approx. 1 second intervals, release the 2 buttons, microprocessor is now initialized.
Your receiver has problem in Amplifier section and that's why shifted to safty mode to avoid further damage. Please contact nearest Denon service outlet for proper repair. Regards,
Already explained to you that your receiver has problem in Amplifier section and qualified tech person from Denon will handle it because receiver might need some defective parts replacement. It doesn't seem issue of wrong settings. Please contact above said Denon Service link.
Regards,
Already explained to you that your receiver has problem in Amplifier section and qualified tech person from Denon will handle it because receiver might need some defective parts replacement. It doesn't seem issue of wrong settings. Please contact above said Denon Service link. Regards,
You have an internal issue that can't be repaired by you. my suggestion is either take it to the place you bought it if it is under warrenty and have it replaced or take it to a repair shop. however it might cost as much to repair it than to get a new one.
well gees you guys are just rich. i told him the first time out that it needs to be repaired it's just common sensewell gees you guys are just rich. i told him the first time out that it needs to be repaired it's just common sense
Try unplugging the power cord for ten minutes, see if this clears the error. If it flashes a number of times tell me how many time the ligjht is flashing
Answers & Comments
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.
Dave
Just found this thread. Thanks for all your time in assisting everyone. I'm an old tech from 50's and have serviced about anything electronic. I have found in my Denon avr 1804. one channel has shorted outputs, 4 .22ohm resistors and a .47ohm resistor, these are all open. Don't know the wattage. They look like metal film 1watt for the .22's and perhaps a 1/4 watt .47. Not sure. Also don't know the process to balance the output without the manual. So asking for resistor wattage and if you have the pdf, that would be neat. Don't know how we accomplish this. Also have read that there is a resistor change in the power supply, questioning that as well
Dave DeGain, I have a receiver with this problem, Being an electrical engineer I can troubleshoot and do the repair myself although your experience and knowledge would be extremely helpful - this is not what I do! Are you still able to provide a PDF of the service manual? If so, how can I get you my email address? If not is there a way I can get one elsewhere? Thank you!
Its the problem of over voltage or a faulty --ic--.get repaired .no other option.it will work and wont cost u much.
pls do rate the solution
thanks.
regards.
fixya expert team
It seems that this product (and it's kins) have an issue.
Read this post
Try to reset it
To re-set the 2802, just do as follows:
1. Switch off at unit's main power switch.
2. Hold A & B buttons and turn power back on.
3. Check entire display is flashing at approx. 1 second intervals, release the 2 buttons, microprocessor is now initialized.
Hope this helps.
Your receiver has problem in Amplifier section and that's why shifted to safty mode to avoid further damage. Please contact nearest Denon service outlet for proper repair.
Regards,
Hi,
Denon Support might help you to locate nearest service dealer.
Already explained to you that your receiver has problem in Amplifier section and qualified tech person from Denon will handle it because receiver might need some defective parts replacement. It doesn't seem issue of wrong settings. Please contact above said Denon Service link.
Regards,
You have an internal issue that can't be repaired by you. my suggestion is either take it to the place you bought it if it is under warrenty and have it replaced or take it to a repair shop. however it might cost as much to repair it than to get a new one.
well gees you guys are just rich. i told him the first time out that it needs to be repaired it's just common sense
Try unplugging the power cord for ten minutes, see if this clears the error. If it flashes a number of times tell me how many time the ligjht is flashing
Try also keeping start button pressed for ten seconds.
Your stereo has a safety switch device that keeps the unit off when it detects a short, a faulty component or an overvoltage.
If you want to do it yourself you need to take it apart and to test, multimeter in hand the components, starting from power adapter section and amp.
If you do not get any error code the unit must be tested dirtectly.