Denon 4800 problems (1 Viewer)

[Jim Clark]

I've had my 4800 since they first came out at the end of last year and have been very happy with it even though it does require a PHD to operate the monster LOL.
It recently started acting up. It now has a mind of its own and switches to DIGITAL input (according to the lights) when it's getting an analog signal from either the SAT or TV which are both analog inputs. Then it will magically switch back and work again. Sometimes even when I try to force it back to ANALOG and it shows the analog light it produces no sound.
Another important fact is that the lights showing which speakers are receiving a signal are never lit anymore no matter what input/output I am trying to use, even when the unit decides to work.
Video signals from the SAT and DVD are fine.
I have tried a microprocessor reset according to the manual and it didn't help.
I'm pretty sure it will have to go in for service but I wanted to check here first to see if anyone has had similar problems and what they did.
Thanks.
Jim

 

[TimDoss]

I don't know if this answers your question... but
I have noticed with my 4800, if I turn on the cable
too soon after turning on the reciever that the
reciever doesn't seem to be able to auto sense what
signal is going into it... if the signal is digital,
there isn't a problem, but if it is analog, I will
have to re-enter the channel, or change channels...
anything to have a new signal fed to the reciever,
then it is fine. This works better for me than
switching the reciever to analog mode. As for the speaker
lights not lighting up, I'm not sure as I'm not sitting
in front of it right now... but are they supposed to
light up in analog mode? I seem to recall not seeing
them lit up on mine. I'll check when I get home.

 

[Michael Lee]

I have not had that happen on any of my Denon receivers and I have had more than a few. One of things I liked about the 4800 when I compared it to my old 5700 was that it locked onto a signal immediately. DTS CD's on the 5700 used to lose the first second or two unless I manually locked it into it beforehand,
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[Edited last by Michael Lee on October 08, 2001 at 01:15 PM]

 

[TimDoss]

It does lock onto the signal immediately... my problem,
I think, lies in that in my power on macro I turn on
the reciever and then the cable... the cable comes on
without giving the reciever a chance to fully power up,
thereby creating a little null in there where it can't
sense the signal... I believe this to be the problem,
one I should easily be able to fix by changing my macro
a bit. Just need to find those instructions.

 

[Jim Clark]

I never had a problem with the 4800 auto-sensing the signal before the recent problems and I didn't change anything with the setup. It appears something is definitely wrong with the receiver and it will need service.
Anyone have experience with Denon service in the Washington, DC metro area? The Denon web site lists one local service location, I didn't buy the unit there but I did get some speakers there. I'll also call the store where I bought the 4800 (local non-chain retailer) and ask them what they do for Denon service.