Looking for alternative to E35M1-M Pro - Noise problems - AVS Forum
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Old 04-18-2012, 06:38 PM - Thread Starter
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So I built a HTPC using a E35M1-M pro a few months ago. The main parts are

E35m1-m Pro
Silverstone case
Xonar ST + expansion
Seasonic fanless PSU
WD hard drive


From day one I have had the same problem. A switching noise that can be heard on the line out. The reason it is such a problem is that I am using very efficient speakers so every little noise is magnified in the system. Here is everything I have tried to get rid of it.

Replaced PSU - No change
Removed sound card - noise still comes through stock headphone/line out
disconnected power to HD while system is running - No change
replaced MB under warranty - just got it back and no change

I now think that this is a problem that is inherent to this motherboard. I am ready to try something else but I don't want to spend an arm and a leg considering how much I have already had to deal with. Can anyone recommend an alternative that is around the same price point, has PCI and onboard graphics good enough for 1080p?
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Old 04-18-2012, 06:58 PM
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I looked and that board costs 120$ so...

GIGABYTE GA-B75M
http://www.newegg.com/Product/Produc...82E16813128540

or if you want HDMI and 8x SATA(!!) then go with this:

ASRock B75M
http://www.newegg.com/Product/Produc...82E16813157313

with

Intel Celeron G530
http://www.newegg.com/Product/Produc...82E16819116409

Looking at 126$. Of course you have to put the processor/heatsink on but should be fine and you get a better CPU.
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Old 04-18-2012, 08:40 PM
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Why didn't you RMA it? SMH....

A few options at the same price point -

A4-3300 + ECS A75 Micro-ATX = $117 After Rebate

A6-3500 + Same Board = $126 After Rebate

There a couple of post about sub-$100 Intel G-series based systems.

A. Thomas -
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Old 04-18-2012, 08:44 PM - Thread Starter
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Here is a clip of the noise recorded using another computer. I have increased the amplitude which is why there is so much hiss. Can someone confirm that this is indeed coming from the motherboard itself? The only things I have not completely R&Red on this rig is the memory and the hard drive but considering the noise is still there when the hard drive is removed from power, I doubt that is the cause. The noise is affected by some processes if that makes a difference.

 

E35M1 noise.zip 428.2158203125k . file
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Old 04-18-2012, 08:54 PM - Thread Starter
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"replaced MB under warranty - just got it back and no change" = RMAed it and the return unit has same problem.
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Old 04-20-2012, 10:08 AM - Thread Starter
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Before I go and order my new motherboard, could someone take a listen to the noise and tell me if there is anything else I may want to try first?
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Old 04-20-2012, 08:45 PM
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Have you taken this computer to a different location (friend's house, etc) and tested it? Have you connected it to a different monitor/tv? Have you tried removing everything from the case and running it while the motherboard is just sitting on a board? Hiss is usually related to power and grounding, just like it is when you encounter hiss in a car stereo, and it can also be influenced by feedback from external devices, like a monitor. So, I would try doing all of these things to verify that none of the other hardware is causing it before you buy a new motherboard.
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Old 04-21-2012, 12:30 AM
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Is the noise random or repetitive ? It kinda sounds like some sort of switching on the power...maybe a leaking/bad capacitor. Could be anything so you need to isolate it to a specific item.

"Man, I told you we shouldn't have shot Niedermeyer"

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