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Hi everyone. I am new to the forum and am hoping you can help me. If I should be posting this somewhere else, please let me know. I have a Denon 1912 that I have been using with no problems for the past month and half with my Samsung 7000 series LCD TV. All of a sudden yesterday, when I turned it on to watch TV, there were these transparent blue boxes covering the TV screen. I could see the TV show playing behind it so I know the signal is going through. I checked the Blu-Ray player, and then same thing. When I tried my computer (hooked up to the same TV, but not through the receiver), they were not there. I tried swapping the HDMI cables. I tried a different input on the TV. I unplugged the receiver for a little while and tried again. I tried the "reset" per the manual. I called Denon support, and they told me to try the same stuff that I already did. Then they told me I would have to exchange it, or send it in for service. It is driving me crazy, cause it worked before iwht no issues. I hope someone can help. Thanks in advance.
 

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Hi everyone. I am new to the forum and am hoping you can help me. If I should be posting this somewhere else, please let me know. I have a Denon 1912 that I have been using with no problems for the past month and half with my Samsung 7000 series LCD TV. All of a sudden yesterday, when I turned it on to watch TV, there were these transparent blue boxes covering the TV screen. I could see the TV show playing behind it so I know the signal is going through. I checked the Blu-Ray player, and then same thing. When I tried my computer (hooked up to the same TV, but not through the receiver), they were not there. I tried swapping the HDMI cables. I tried a different input on the TV. I unplugged the receiver for a little while and tried again. I tried the "reset" per the manual. I called Denon support, and they told me to try the same stuff that I already did. Then they told me I would have to exchange it, or send it in for service. It is driving me crazy, cause it worked before iwht no issues. I hope someone can help. Thanks in advance.
Hello,
It is a shame the 1912 does not have Component Video Switching as it would have offered a workaround for now.
This is something I have never encountered before. If possible, Pictures really might help. Just to make sure, have you tried setting HDMI to Passthrough? Also, in the mean time, you could run Composite Video. Not HD and not ideal, but you would be able to have Video Switching.

If you have not done this already, I would disconnect all Sources but the Monitor Out and a single HDMI Input.
It might also be worth trying different HDMI Inputs on the Denon if you have not done that too.
Cheers,
JJ
 

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Hi and welcome to the Shack!

Given all you have already tried it does seem like something is wrong with the Denon. You have tried every usual test to troubleshoot so an exchange seems in order if its under warrentee.
 

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Discussion Starter #4
Hello,
It is a shame the 1912 does not have Component Video Switching as it would have offered a workaround for now.
This is something I have never encountered before. If possible, Pictures really might help. Just to make sure, have you tried setting HDMI to Passthrough? Also, in the mean time, you could run Composite Video. Not HD and not ideal, but you would be able to have Video Switching.

If you have not done this already, I would disconnect all Sources but the Monitor Out and a single HDMI Input.
It might also be worth trying different HDMI Inputs on the Denon if you have not done that too.
Cheers,
JJ
Thanks, I'll try disconnecting everything and start from scratch. Is is possible that a cable could be bad? I am new to the whole home theater deal, and am not 100% how everything affects one another.
 

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That blue image looks like something is wrong with the on screen menu display of the Denon.
 

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Hello,
Yep that looks to be clearly defective. And while an HDMI Cable can certainly go bad, it would nor cause something like that. I would do an Authorized Service Center search on Denon's Website so you do not have to ship it to NJ. Unless, of course you live fairly close or in NJ. Truly a shame that the Microprocessor Reset did not do the trick. By the way, did the AVR have plenty of ventilation?
Cheers,
JJ
 

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Hello,
Yep that looks to be clearly defective. And while an HDMI Cable can certainly go bad, it would nor cause something like that. I would do an Authorized Service Center search on Denon's Website so you do not have to ship it to NJ. Unless, of course you live fairly close or in NJ. Truly a shame that the Microprocessor Reset did not do the trick. By the way, did the AVR have plenty of ventilation?
Cheers,
JJ
I thought I had enough. I will be honest though, I had my blu ray player on top of it. Also, everything was inside of a closet (pic attached). When I would watch a movie or something, I would leave the door open to allow the heat to escape. Although, I would keep an eye on the temp in the closet, and it never got excessively warm. I think the most i ever saw it was 20 degrees warmer than the house, but that is when I left the door closed just to see how warm it would get inside. All that was when I first got it over a month ago. I had also added a vent above the door right before I installed the denon. I am wondering if I should keep the blu ray on another shelf, and maybe add "positive" ventilation like an exhaust fan or something. I could also maybe run a vent from the basement, and have it blow over top of the receiver as well. Any other ideas for venting, or where I could get a quiet fan that would do the trick?
 

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Hello,
I definitely would not mention this to Denon. In the future, definitely give your AVR as much clearance and airflow as possible. Whatever you do, do not stack anything on top of it. Heat well could have been the culprit for what I am guessing to be a broken HDMI Board.
Cheers,
JJ
 

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Discussion Starter #10
Hello,
I definitely would not mention this to Denon. In the future, definitely give your AVR as much clearance and airflow as possible. Whatever you do, do not stack anything on top of it. Heat well could have been the culprit for what I am guessing to be a broken HDMI Board.
Cheers,
JJ
No, I certainly won't mention it. However, I thought These had a thermal overload protection in case they got too hot? Based on the pic in my last post, do you think that I would be OK to leave it set up like that? That pic does not show that blu ray player on top of it. I would then put the blue ray on another shelf. Lastly, is there a rule of thumb as to how cool I should target to keep the closet? I know some people may say keep it as cool as you can, but i'm looking for a number. If i start adding fans and such, I would like to know what I am shooting for.
 

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The airspace around the receiver should be kept below 85F if possible. Heat is the number one killer of electronics. Fans can help but if all your doing is moving the hot air around thats not going to make much difference. A shelf with holes in it is also great so air can move through the bottom of the receiver as well.
 

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Hello,
The thing with Entry Level AVR's like the 1912 is to keep up with all of the features, the Amplifier Stage is not as robust. That is things like Heat Sinks which help to dissipate heat are not as large. In addition to smaller Power Transformers and Capacitors.

All this being said, the Closet should be ok provided the AVR has plenty of clearance. A Fan inside the Closet would not be a bad idea as well.
J
 

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I just experienced the exact same thing with my Denon AVR 1912. Blue screen on TV regardless of source selected. Tech support claims they have never heard of this problem, but had me do a number of resets and power down procedures to renew the HDMI cable handshakes. No luck and now it looks like I need to disconnect everything, drive to a repair shop and wait a month or so for the repair. Wondering how your receiver was repaired or replaced and any follow up problems?
Thanks
 

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Discussion Starter #14
I just experienced the exact same thing with my Denon AVR 1912. Blue screen on TV regardless of source selected. Tech support claims they have never heard of this problem, but had me do a number of resets and power down procedures to renew the HDMI cable handshakes. No luck and now it looks like I need to disconnect everything, drive to a repair shop and wait a month or so for the repair. Wondering how your receiver was repaired or replaced and any follow up problems?
Thanks
Did you have enough airflow around it. I was not able to confirm it, but do suspect it was the heat that did mine in. I did not know that I needed to keep it around 85 degrees. As for what I did to remedy the issue, I did not want to wait for repair, so I was able exchange it after some leg work. On the new one, I will be adding some computer case fans for positive venting. I found some 200mm fans that move air at 110cfm. I'm going to add two to the top vent in the closet to push air out. I also found that simply resting one on top of the denon (with it sucking air out of the reciever) keeps the temp down to an almost undetectable level when placing you hand over top of the unit. The fans are only around $20 so I think I'll use two on top of the unit for same measure. If I have the same issue again, then I'll get more involved with denon support for a warranty repair. I know this may not be the exact answer you are looking for, but hope it helps a little bit.
 

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Hello,
This is beginning to seem a bit troubling. Models like the 1912 are almost always subcontracted out to Companies like Sherwood/Newcastle who actually are the OEM for a shocking number of Entry Level AVR's across all Brands. That being said, S/N makes a very good product on the whole. It is just at these price points, there are so many compromises that need to be made to ensure profitability. It is why it is next to impossible to find any AVR that is Made in Japan anymore. The Denon AVR-4311 is the last recently released AVR still made there and its replacement is going to be Made in China like the rest of the Denon AVR Lineup.
J
 

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Hi everyone. I am new to the forum and am hoping you can help me. If I should be posting this somewhere else, please let me know. I have a Denon 1912 that I have been using with no problems for the past month and half with my Samsung 7000 series LCD TV. All of a sudden yesterday, when I turned it on to watch TV, there were these transparent blue boxes covering the TV screen. I could see the TV show playing behind it so I know the signal is going through. I checked the Blu-Ray player, and then same thing. When I tried my computer (hooked up to the same TV, but not through the receiver), they were not there. I tried swapping the HDMI cables. I tried a different input on the TV. I unplugged the receiver for a little while and tried again. I tried the "reset" per the manual. I called Denon support, and they told me to try the same stuff that I already did. Then they told me I would have to exchange it, or send it in for service. It is driving me crazy, cause it worked before iwht no issues. I hope someone can help. Thanks in advance.
Hi, I just purchased the same Denon AVR-1912 and I'm experiencing the same display problems as quoted above. Did anyone find a solution to the problem? I just opened the box, connected the receiver, and within 15 minutes the menu/display went bad--exactly as described in this forum. I've tried everything mentioned in this forum short of boxing the receiver and returning it. Thanks.
 

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My understanding is that this is a bad video or HDMI board within the receiver, if its under warrentee I would return it for another unit.
 

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If anybody tells you a new/better cable will fix this - it will not.

Please pm me or respond here if you have any question about the issue. I look forward to participating in the forums in the future! Have a great evening!
 

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Hello,
I agree about long HDMI runs being troublesome. However, many use Monoprice HDMI's with no ill effects. That being said, I use Audioquest HDMI Cables so I do not have any real experience using ultra low price HDMI Cables.

The only reason I am using AQ's is that I got them for 80% off when Sound Advice was going OOB. At the prices I paid for them, they cost barely more than BlueJeans or higher grade Monoprice HDMI Cables and I could always turn a profit if I ever wanted to sell them.
Cheers,
JJ
 
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