Comments on: Denon AVR 1604 AV Surround Receiver No Power On Repair

By: Wattana

Wattana — Tue, 14 Sep 2021 10:35:47 +0000

Hello Paris,
I'm facing the problem like you stand by power are working well but relay did not turn on main Transformer. I've service manual with me but I'm a bit confuse on RLY_POWER signal. Which part does supply this signal to turn on main transformer relay between CPU board and stand by 15VDC thru Q117?
your kind suggest on this matter is much appreciated,

Likes(0)Dislikes(0)

By: Emanuele

Emanuele — Tue, 09 Jun 2020 21:28:53 +0000

I, i have a similar problem with Denon 1802.
I'm trying to understand if the PROTECT pin of CPU should be high or low level when fully functional.
My receiver stays in stand-by mode, and i have 5v on PROTECT CPU pin. I don't understand if this should be 0 v or it is a (NOT) value, so 5 V is correct. Did you remember the value of yours?
Thanks

Likes(0)Dislikes(0)

By: Paris Azis

Paris Azis — Wed, 20 Feb 2019 21:26:23 +0000

In reply to Ralph.

Hello Ralph

Sorry for the delay. I rarely revisit my articles. Well, I bought this chip preprogrammed from U.K.
Thanks for your kind words.

Likes(0)Dislikes(0)

By: Ralph

Ralph — Mon, 13 Aug 2018 18:51:08 +0000

Hello, I just want to ask you, if you programmed or installed the firmware to that chip. Thanks for the answer

Likes(0)Dislikes(0)

By: Ralph

Ralph — Mon, 30 Jul 2018 01:20:48 +0000

Hello, good job, I just wanted to ask you if this chip (mcu) needs any update or installation of a program, a firmware, or just changed nothing else, I ask you because I also have a similar problem with a receiver Denon S500bt model, in the technical manual says it. Thanks for the reply

Likes(0)Dislikes(0)

By: Paris Azis

Paris Azis — Mon, 12 Mar 2018 17:42:11 +0000

In reply to Fabrice.

Hello Fabrice

Sorry for the long delay to answer you. I had googled the chip and found it in England. Unfortunately I don't have the specific address of the company that had it available. I hope this helps your case...if you didn't already have fixed it...

Likes(0)Dislikes(0)

By: Fabrice

Fabrice — Fri, 08 Sep 2017 10:32:10 +0000

Hello Paris, thanks for your analysis.
I have the same problem, when i turn on, it romains off aster turbine on several times randomly...
Now, i don't find where i can buy the CXP !
Can you help me please ?
I live in France

Likes(0)Dislikes(0)

By: Paris Azis

Paris Azis — Tue, 06 Sep 2016 22:01:00 +0000

In reply to silvio cabral viveiros.

Hello Silvio

Sorry for the delay to answer your request, the reason being that I do not have the needed time to revisit my published articles so often. As regards your request, I am afraid I cannot give you any advice in blind, without even knowing the model you own. I would only suggest you to try to re-initialize the processor (if the symptom as you say is similar). The method is given in the text above and it is easy. If this doesn’t work for you, I thing the only further option is to send the unit either to an official Denon service in your country or to a known skillful repairs’ technician located at the place you live.

Best Regards

Likes(0)Dislikes(0)

By: silvio cabral viveiros

silvio cabral viveiros — Fri, 08 Jul 2016 22:46:15 +0000

Hello.
I live in sao paulo , Brazil and have a denon with the same problem . accurate and here no sign ... but I also have relatives in Portugal . What should I do so that they can acquire the to send me ? which direction should I give them?
grateful.
Silvio Viveiros

Likes(0)Dislikes(0)

By: Paris Azis

Paris Azis — Wed, 25 May 2016 08:16:21 +0000

In reply to Humberto.

Thanks a lot Humberto.

Best wishes

Likes(0)Dislikes(0)