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Thread: Problem with Marantz SR7400 A/V Receiver |
    
New member Username: Hadoob024
Post Number: 1
Registered: Apr-09
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| Posted on Tuesday, April 28, 2009 - 04:49 pm: |
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I tried doing some searches on this, but haven't found any answers. Here's my issue. I purchased the SR7400 AV receiver about 4 years ago, and am beginning to have problems with it. It appears that no signals are being sent to my subwoofer any more. Per the instruction manual, I tried unplugging the receiver for over 5 minutes, plugged it back in, and tested it. This solved the issue for about a day. However, the next day, the sub would not work again. I then tried resetting the receiver, but this did not help as well. I'm also running into the issue where regardless of what volume level I leave the receiver at when I turn it off (usually at -50), when I turn it back on, it starts at 0. I can't believe that the unit is defective already. I have another receiver that's in pristine condition going on 20+ years, but I tried Marantz due to its reputation. Any
thoughts? |
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Platinum Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 13549
Registered: May-04
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| Posted on Thursday, April 30, 2009 - 10:44 pm: |
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There are several possibilities but it might be the master processor that is acting up. Your twenty year old receiver doesn't have a processor. Take it to a repair shop and ask for an estimate before OK'ing any repairs.
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New member Username: Hadoob024
Post Number: 2
Registered: Apr-09
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| Posted on Friday, May 01, 2009 - 02:45 pm: |
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Hmmm... Any thoughts on what might be causing this? Just a faulty unit maybe? I have a technician (from the place I bought my system from) coming out next week to try and figure out what's going on. I guess I'll just have to wait on him. Thanks though. |
Platinum Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 13550
Registered: May-04
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| Posted on Friday, May 01, 2009 - 03:31 pm: |
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" Any thoughts on what might be causing this?"
Things break, that's one reason there are technicians.
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New member Username: Hadoob024
Post Number: 3
Registered: Apr-09
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| Posted on Friday, May 01, 2009 - 03:35 pm: |
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I figured. I'm just shocked. Never had anything that cost this much that broke in the amount of time that it has, especially when I had heard so many good things regarding quality and reliability. Oh well. I'll chalk it up to "the bad unit in the bunch". Thanks! |
Platinum Member Username: Nuck
Post Number: 12180
Registered: Dec-04
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| Posted on Friday, May 01, 2009 - 03:39 pm: |
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Planned obsolescence comes to mind.
So does the thinking that too many things have been stuffed into one box for any one's good.
But that's just me. |
New member Username: Hadoob024
Post Number: 4
Registered: Apr-09
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| Posted on Friday, May 01, 2009 - 03:48 pm: |
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Nice. The "conspiracy" answer. I could see that, it makes sense too. 
Are you faulting the industry as a whole though, or just Marantz?
Anyone hear of these kinds of reliability issues with Marantz? Nothing like this ever came up in my research before buying the unit. |
Platinum Member Username: Nuck
Post Number: 12182
Registered: Dec-04
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| Posted on Friday, May 01, 2009 - 06:22 pm: |
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The industry and the product conception of all in one. |
New member Username: Hadoob024
Post Number: 5
Registered: Apr-09
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| Posted on Friday, May 01, 2009 - 06:51 pm: |
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Makes sense. Hmmm... Guess I got no choice but to pony up for the tech to come out here to check it out. Thanks! |
Platinum Member Username: Nuck
Post Number: 12183
Registered: Dec-04
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| Posted on Friday, May 01, 2009 - 06:57 pm: |
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Best of luck tb. |
Platinum Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 13551
Registered: May-04
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| Posted on Friday, May 01, 2009 - 07:01 pm: |
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The industry has sought out components that have become disposable. You can call it what you like but for the last 60 years building mass market components as cheaply as possible has been the norm. The cheaper thay can be built, they will be built that way.
One thing to consider is large scale IC's do not deal well with power line surges. If you haven't invested in a top notch surge protector lately, this is most likely the cause of the premature death. It is more the constant small peaks that do in these devices and then one larger one comes along and you are calling the tech.
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New member Username: Hadoob024
Post Number: 6
Registered: Apr-09
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| Posted on Monday, May 04, 2009 - 11:06 am: |
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Thanks a lot everyone. Yeah, guess I have no choice now. Still, just surprised that this happened so quickly. I'm a tech geek and have a lot of stuff around the house that I've spent a lot of money on, and this receiver is the quickest that I've seen anything get messed up.
Yup. Even invested in a high-end surge protector, so I thought I'd be safe. Everything else connected to this surge protector is doing well, just the receiver. |
Platinum Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 13554
Registered: May-04
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| Posted on Monday, May 04, 2009 - 02:07 pm: |
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Three things about surge protectors; 1) if the equipment doesn't have a three pin plug, there is nowhere for the surge protectot to effectively dump the over-voltage. This cuts the value of the surge protector down to half its rated value.
2) If the unit is more than a few years old, it might be time for a replacement, the MVO's in most units wear out after a while.
3) If the problem stems from lightning strikes as it does here in Tornado Alley, most surge protectors do not clamp, unclamp and clamp again with sufficient speed to actually prevent ligntning surges from reaching your components.
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New member Username: Hadoob024
Post Number: 7
Registered: Apr-09
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| Posted on Monday, May 04, 2009 - 02:13 pm: |
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Hmmm... Well, my surge protector does have the three pin plug.
I guess it is a little bit older now. I bought it with the rest of my system, so it's about five years old now.
That could be it. I live in Atlanta and we do get our fair share of lightening strikes. I guess that could be the cause of it.
Oh well. I guess I'll just see what the tech says when they come out here. Hopefully I can set that up for next Wednesday. I'll update this post with the results.
Thanks! |
