This is most often caused by a bad power transformer. The power tranformer has several different secondary outputs and one of them is the supply voltage for the display. There are several other things that can also cause this problem, but all of these would require some knowledge of electronic troubleshooting and the proper equipment to test it.
I work at an authorized Denon service center and have repaired many Denon receivers, so I do have hands-on experience with these.
If you have the proper test equipment, like a multi-meter at minimum, I could help you to figure out what is causing your problem. If not, you really should just take it in for service. The model number of your receiver would indicate that it may still be under the manufacturers warranty. It has a 2 year warranty, so you can probably get it repaired for free. If it has been more than 2 years since you made the purchase it would still be worth it to get it repaired. This is a very expensive receiver and even if it needed the power transformer, which is very expensive, it would still be cheaper to pay for a repair than to buy a new one of equal quality. Even the very best electronic equipment breaks down at some time, it is just unfortunate that yours took a turn for the worse this soon.
If I can be of more help feel free to post a reply and ask.
Answers & Comments
This is most often caused by a bad power transformer. The power tranformer has several different secondary outputs and one of them is the supply voltage for the display. There are several other things that can also cause this problem, but all of these would require some knowledge of electronic troubleshooting and the proper equipment to test it.
I work at an authorized Denon service center and have repaired many Denon receivers, so I do have hands-on experience with these.
If you have the proper test equipment, like a multi-meter at minimum, I could help you to figure out what is causing your problem. If not, you really should just take it in for service. The model number of your receiver would indicate that it may still be under the manufacturers warranty. It has a 2 year warranty, so you can probably get it repaired for free. If it has been more than 2 years since you made the purchase it would still be worth it to get it repaired. This is a very expensive receiver and even if it needed the power transformer, which is very expensive, it would still be cheaper to pay for a repair than to buy a new one of equal quality. Even the very best electronic equipment breaks down at some time, it is just unfortunate that yours took a turn for the worse this soon.
If I can be of more help feel free to post a reply and ask.
Dave