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"Official" Marantz 7400/7500/8400/8500 thread - Page 21

post #601 of 702
3/15/07 at 7:45am
Thinking of getting a refurb'd 7500 or 8500 from ac4l.com..........not sure which one yet. But what about the extra protection plan they offer for 3 or 5 yrs?
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post #602 of 702
3/15/07 at 11:20am
BlakeN,

I agree that it's heat-related: the longer I leave the unit shut off, the longer it tends to work before the clicking starts. But it sits alone on a coffee table, so ventilation isn't a problem. And the unit is still cool to the touch when the trouble hits.

Thanks for your suggestion.
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post #603 of 702
3/15/07 at 7:35pm
Thread Starter 
Quote:
Originally Posted by jaybeech View Post

Like several other people on this thread, after 6 months of use my SR8400 acquired an annoying habit of shutting itself off and on, off and on, until functionality is completely lost in a barrage of clicking sounds, at which point your only choice is to pull the plug. It usually takes a couple hours for the problem to arise.

I shipped it off to an authorized service center a couple months ago but--my worst fears realized--they've been unable to replicate the problem.

They suggested that one of my other components might be faulty. I know the problem occurs with TiVo, DVD, and CD, so that can't be right. But come to think of it, all those components are connected to my 8400 via optical cable.

So there's my theory: The problem is triggered by some malfunction in the 8400's optical audio inputs. Service centers fail to detect it because they probably just switch on the tuner and let it run, or else use RCA plugs.

Sound plausible?

It does sound related to heat, or possibly the short-circuit protection circuit kicking in.

Are your speakers 4 ohm? In good working order? How are they connected to the terminals - is there any way a wire strand or two could be bridging the terminals?

To determine if it is heat or speaker protection circuit related, run it for a few hours listening to the tuner at your usual volume in some multichannel mode. If it trips then, you know it's not an optical input.

My 8400 is not especially sensitive to heat. It gets warm but not hot and it's never tripped. (Oddly, my 7400 had one heatsink that got VERY hot. But even it never tripped.)
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post #604 of 702
3/16/07 at 11:04am
Fraoch,

Thanks for your ideas. I just have a standard pair of bookshelf speakers. No crossed wires visible. I disconnected one of the channels but it made no difference. And once the unit gets into its clicking frenzy, unplugging absolutely everything won't set it right, it has to "cool down" for a spell.

I'll try running the tuner when I get the unit back.
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post #605 of 702
3/16/07 at 11:37am
Quote:
Originally Posted by jaybeech View Post

Fraoch,

Thanks for your ideas. I just have a standard pair of bookshelf speakers. No crossed wires visible. I disconnected one of the channels but it made no difference. And once the unit gets into its clicking frenzy, unplugging absolutely everything won't set it right, it has to "cool down" for a spell.

I'll try running the tuner when I get the unit back.

I have the same exact problem with my SR-8400. It seems to happen to me most when I am running zone two along with the main zone. It has happened when I hit the multispeaker button on the front. I have never had it happen when I am just using the 5.1 in the main room regardless of the input. It happens rarely, and the unit always works fine after i reset it by pulling the power cord out. I just deal with it until someone posts that Marantz has a fix for it
Otherwise, the thing rocks! I am actually looking at a 7100 for my downstairs HT.

Pat
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post #606 of 702
3/16/07 at 1:52pm
I spoke to someone else who had the same problem. The display eventually stopped working. It was successfully repaired. Apparently a power supply issue.

So it looks like the symptoms become more "robust" over time.
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post #607 of 702
3/20/07 at 7:00pm
Dang. I got my 8400 back from the service center on Saturday, and it works flawlessly. They insist that no repairs were made. Maybe it was all just solar flares?

This is a very useful discussion board. Thanks again for your help.
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post #608 of 702
4/3/07 at 6:40pm
For some reason, my analog volume is MUCH lower than my digital volume. I'm talking -26 for digital, and I have to put the volume at +3 or +4 for analog. This is inputs for my TV, as well as other inputs (I use the VCR channel for my Ipod). Is this by design, or is something wrong? it's a pain in the butt to continually have to adjust the sound.
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post #609 of 702
4/3/07 at 6:50pm
Quote:
Originally Posted by justpete View Post

For some reason, my analog volume is MUCH lower than my digital volume. I'm talking -26 for digital, and I have to put the volume at +3 or +4 for analog. This is inputs for my TV, as well as other inputs (I use the VCR channel for my Ipod). Is this by design, or is something wrong? it's a pain in the butt to continually have to adjust the sound.

My analog inputs are lower than others, but only a few notches. If I'm playing a DVD and switch between analog and digital, as far as I remember, it's only maybe 3-5 notches lower.

I assume the difference is, maybe, that the player does some preamplification prior to sending the signal to the receiver, while with a digital input, the receiver does all the amplifying. Because it's more powerful than the player, the digital input is louder.

Doug
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post #610 of 702
4/4/07 at 11:39am
with my 7500, I would like to distribute audio via cat-5e, A-bus type system to individual room amps. On the back of the 7500 is Multi-out (L-R) and Multi Room remote (out), I assume the audio L-R will go to the audio (in) of the encoder of the a-bus system then to the room amp. The IR connection will go from the encoder as well to the room amp. Assuming these connection are correct, will I have to teach the room remote to control the 7500? Thanks!
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post #611 of 702
4/26/07 at 7:45pm
I have an SR 7500. The two front speakers are 20 year old Thiel 03a speakers. The receiver shuts down from time to time. When I disconnect the right speaker the problem disappears. Any ideas?
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post #612 of 702
4/26/07 at 8:04pm
Quote:
Originally Posted by Nick1947 View Post

I have an SR 7500. The two front speakers are 20 year old Thiel 03a speakers. The receiver shuts down from time to time. When I disconnect the right speaker the problem disappears. Any ideas?

Usually that happens when there is a "small" short in the speaker connections. It could be a single thin strand. Check both the receiver and speaker ends.

Ed
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post #613 of 702
5/3/07 at 8:23am
I have checked the wires but there is no short. Any other suggestions? Could there be a short in the speaker that I could test with an ohm-meter? What should the resistance be?
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post #614 of 702
5/24/07 at 11:37am
I recently picked up a new SR7500. So far, I do like the unit.
I have a Marantz DV6500 DVD/SACD player connected to it and I play
SACDs.

My question is- When I turn the power OFF (on both SR7500 and DV6500) the multi light or display stays on (RED). Is this normal? Does anyone else have display lights that stay on when you power down the unit??

It's a mystery. Any clues why this happens?
Thanks
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post #615 of 702
5/24/07 at 11:52am
Quote:
Originally Posted by psyopwak View Post

I recently picked up a new SR7500. So far, I do like the unit.
I have a Marantz DV6500 DVD/SACD player connected to it and I play
SACDs.

My question is- When I turn the power OFF (on both SR7500 and DV6500) the multi light or display stays on (RED). Is this normal? Does anyone else have display lights that stay on when you power down the unit??

It's a mystery. Any clues why this happens?
Thanks

I have a 7400, and I don't use the multi-room function, but I've switched it on by mistake before. I noticed the light stays on, and actually the power is still on for the amp (check the heat on top). I guess this is so you can otherwise have the receiver switched off while using it to amplify speakers in another room.

Doug
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post #616 of 702
5/24/07 at 12:21pm
My SR-7500 does the same as above, if MULTI is operating when POWER is switched off, the MULTI diaplay stays lit, power is still on, Standby light does NOT light. I think this is normal behavior.
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post #617 of 702
5/24/07 at 5:56pm
Yes it's normal. You have to physically press the multi or the multi speaker button to turn that off. That is so you can leave the other zones on without having the unit turned on. Kind of a nice feature if you think about it. I use it a lot when all of us our outside, I have no reason for the main amp to be on.

Pat
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post #618 of 702
5/24/07 at 6:09pm
Has anyone hooked up there XA2 analog out to the analog in on their 8500?
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post #619 of 702
6/2/07 at 10:03pm
Does anyone has this combo of a sr8500 and an infinity center beta c250 speaker? What is your experience on this combo?

Mine is strange: the center is always weak, almost inaudible if set at 0dB and I have to up it to +4dB. My infinity primus 360 fronts are set at -3dB.

The local distributor for infinity speakers told me that sr8500 didn't have high current hence don't have the power to drive beta speakers? Is this true?
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post #620 of 702
6/3/07 at 5:53pm
Thanks to those who posted the answer to my MULTI light question. It was the correct answer and I have turned it off now.
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post #621 of 702
6/7/07 at 12:09pm
I bought the extended warranty. I usually roll the dice and not get an extended warranty, but the price wasn't bad: 70 for 5 years. Especially considering the cheap price for the SR8500 itself.

Before I ordered I bought an SR4001 from a local shop and thought it sounded really good, but was thinking of upgrading to a 5001. They don't haggle, so I was looking at paying the same for a 5001 as an 8500. With all of the handshake issues with HDMI anyway, I thought I wasn't loosing much by giving up HDMI. In my case, I am building DIY HD LCD projector that will have a DVI connection. My cable box has DVI. And if I get an HD DVD player, I can always simply get an HDMI to DVI adapter.

I am assuming that there will be a noticeable difference in sound quality between the 4001 and 8500. I should get it this Friday and will post my thoughts on the comparison.
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post #622 of 702
6/7/07 at 4:49pm
en2rec

I will be interested in your opinions about the SR8500. I have an SR7500 and considered the SR8500 because it had a better transformer. What kind of speakers will you be using? I am running 4 Paradigm mini-monitors, a LCR -350 center and a very bid SVS sub.
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post #623 of 702
6/7/07 at 6:37pm
psyopwak,

I am using Polk RT16 (not to be confused with RTi6) as mains. A Polk CS350-LS for center, and Polk Monitor 7 for surrounds.
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post #624 of 702
6/8/07 at 4:28pm
I got the SR8500 today and hooked everything up, but it isn't working. It powers on and appears work. Component video passes through, but there is no sound, not even in speaker set up. Also no sound through headphones. I've checked my speaker cable connections, and they are fine. If anyone knows the problem, please help. Thanks.
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post #625 of 702
6/8/07 at 4:44pm
Quote:
Originally Posted by en2ec View Post

I got the SR8500 today and hooked everything up, but it isn't working. It powers on and appears work. Component video passes through, but there is no sound, not even in speaker set up. Also no sound through headphones. I've checked my speaker cable connections, and they are fine. If anyone knows the problem, please help. Thanks.

Are your inputs set right? Do you have indication of Dolby/DTS streams?
If so...
You may want to check the owners manual to see how you can do a "system reset" of the unit.

-t
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post #626 of 702
6/8/07 at 8:28pm
I finally got it to work. Once I selected a surround mode rather than leave it on auto, it worked. Then after that the setup produced sound. Strange to me that the setup depended on selecting a surround sound option. But I'm just glad it is working. And it sounds great.

It is hard to compare to the SR4001 that I had just because it was several hours between listening to the two. But my initial impression is that the SR8500 has an even warmer, more natural sound.
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post #627 of 702
6/9/07 at 8:21am
OK. So there is something wrong with my SR8500. When I power it on, it picks up a digital signal (either coax or optical) only about 20% of the time. So I have to keep powering on and off until it sees the signal. I'm going to send it back.
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post #628 of 702
6/15/07 at 4:35pm
im new to this forum, i notices alot of people are having a 'clicking' error with their units.

I am also experiencing this, when i turn it on it fails to power up and instead i only recieve a clicking noise - i have a 5.1 setup with my front speakers bi-wired using the speaker c function.

the only thing i can do is when it is in standby i can turn multiroom on/off other then that i am faced with a blank screen!!

Please help if you can

thank you
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post #629 of 702
6/19/07 at 8:39am
jaitailor,

I've spoken with a couple people who had this problem but got their receivers successfully repaired under warranty. One said it was a power supply issue, another said it was a faulty video chip.

My receiver has worked fine ever since I got it back from the service ctr, but they could find nothing wrong with it. If I were you I would unplug all the speakers from the unit and see if it still clicks, just to be sure there isn't a short there.
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post #630 of 702
6/19/07 at 10:06am
Quote:
Originally Posted by psyopwak View Post

Thanks to those who posted the answer to my MULTI light question. It was the correct answer and I have turned it off now.

You are welcome. My wife leaves it on all the time, drives me crazy

Pat
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