Question about M&S Systems Local Audio Input Module - Xtreme Digital Music System Shelf System

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Xdm46cc key pad volume lights are flashing and no sound is coming from any of the speakers. I have 4 stations in my home.

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  • Terry Wilson Apr 13, 2012

    I contacted Jeff with Homeplicity and he had my unit fixed and back to me within 2 weeks. It was seamless and quick. I would definitely recommend Jeff as well as use him in the future for any of my needs.

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I bet your unit is about 4 years old...
I have installed 4 of these systems 4 years ago and each is failing at about the 4 year mark (3 so far).

The flashing volume lights are a communication error, meaning the keypads are not communicating with the controller. If all of the keypads are doing the same thing and your have checked your cables then the problem is with the controller. I would unplug the unit for a few days and see if that helps.

It appears the units work consistently and reliably for about 4 years however in my case 75% have failed at the 4 year mark.

Fortunately I have a meter and oscilloscope and determined why they are failing. The main power supply unit that feed power to the 5VDC regulator is failing.

It is not clear whether M&S replacement units have addressed this problem or not. Therefore, to fix the problem for my customers, I added and additional small power supply (fits inside the case) and injected the signal on the input side of the 5VDC regulator. My solution hopefully will not expire after 4 years.

It appears to me from my small sample size that M&S may have a flaw in their original engineering and replacing it with the same will guarantee future failure.

I hope this helps others. :)

Posted on Apr 01, 2010

  • 3 more comments 
  • Ghoztzz Sep 01, 2010

    I had this same Problem with my XDM4600 system. I contacted Homeplicity and He said that he could fix it because he had seen this same problem before so I sent him my system. The service was fast, the repair bill was very reasonable and most importantly THE UNIT WORKS GREAT. He really knows what he is doing! Homeplicity was a great company to work with, I will definitely keep his information on hand for any other problems I might have with my others systems.

  • Jeff Bonvallet
    Jeff Bonvallet Nov 27, 2011

    I have now repaired over 10 units and all are working great including the first one that I repaired over 2 years ago. It appears that this is a common problem with the XDM46cc.

  • Terry Wilson Mar 03, 2012

    can I get your contact info to have my system repaired as well?

  • Terry Wilson Mar 03, 2012

    how would I contact you to fix my unit as well?

  • Jeff Bonvallet
    Jeff Bonvallet Mar 05, 2012

    You can contact me thru my website HomePlicity.com
    Or call me at 719-495-4081

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What ohm and watt speakers can I use with a craig CM402 cd am fm player? It came without them


Speaker requirements are likely to be 8 ohm, most modern hi-fi speakers are. A few low-fi systems have used special high impedance speakers and the old hi-fi standard for valve amplifiers was 15 ohm and 3 ohm or lower has been used in televisions a lot.

4 ohm speakers are commonly used where a higher power output is desired at the cost of some quality of sound reproduction but depending on how the sound is listened to can soon overload some amplifiers primarily designed for 8 ohm as it will try and deliver more power into the lower impedance speakers and perhaps exceed the rating.

8 ohms is a safer choice. The lower the wattage rating of the speakers the more efficiently they tend to be able to reproduce sound at low volume levels so for background music in a small domestic environment the average power requirement will be in the order of half a watt so even with a high powered amplifier the volume would rarely be turned up above 1 - 2 on the typical scale of 10 and ten watt speakers would be more than adequate. It is unfortunate that it is almost impossible to obtain quality speakers rated at such an unfashionably low power rating.

With the stiffer cones of a higher power rated speakers the volume has to be turned higher before the speakers become efficient and listening at low levels can be difficult. In a domestic environment a 50 watt rating is perhaps the best compromise as if there are neighbours to consider a ten watt average power output will be sufficient even if the amplifier is capable of higher powers. Just don't turn the volume up more than necessary.

The greater the power rating the more power will be required for efficient reproduction. For electrical and mechanical safety of the speakers the rating should exceed the maximum output of the amplifier but listening at low levels with quality of sound can become virtually impossible.

It is all a matter of taste and environment.

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The speaker make a buzzing sound


that's called breaking up or overloading it means that the speaker is being asked to play louder than it was designed to play!! this will ruin the speaker at all volume levels if allowed to make that sound for very long..advice? lower the volume till that noise disappears it's not a product fault it's user error advice turn it down or buy a more powerful unit to achieve the volume you want/need

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This is an indicator of an output load problem, turn unit off! remove the speaker wires from the back of the stereo, now turn power on and turn the volume down. If the word protect stays off there is a short in the wire or one of the speakers, but! if the word protect comes on " with the speakers and wires dis-connected " it indicates a short in the audio output ic pack in the stereo.

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SONY HOME THEATRE SYSTEM Model STR K 670 serial # 8877041 The system turned on and blinks protect. I cleanes all the speaker connections and still the same. Please advise Daghild



http://esupport.sony.com/US/perl/model-home.pl?mdl=STRK670P&LOC=3



http://www.kb.sony.com/selfservice/microsites/search.do?cmd=displayKC&externalId=C215444&fes=true&mdl=STRK670P


From the link...


PROTECT, PROTECTOR or the letter P is flashing in the display of the Audio/Video (A/V) receiver. Solution
sp.gif sp.gif If PROTECT , PROTECTOR or a P is flashing in the display of the A/V receiver, there may be an incorrect connection or an improper setting. Try following these steps to resolve this issue:
IMPORTANT: If model-specific information is needed to complete any of these steps, refer to the instructions supplied with the product. Manuals are available online through the Manuals/Specs/Warranty link on this page.
NOTE: Because each of these steps represents a possible solution to this issue, check the A/V receiver status after completing each step.

  1. Check the speakers and speaker wires for proper connections.
  2. Reduce the volume level. IMPORTANT: If the A/V receiver is used at maximum volume level, it may enter the PROTECT mode. Maximum volume listening will cause the A/V receiver to run very hot and may drain the output capacitors.
  3. If applicable to your model, disable the surround sound option if both the A and B speakers are being used simultaneously.
  4. Ensure the top of the A/V receiver has proper ventilation to keep it from overheating.
  5. If the message only occurs when using a DVD player, the sampling frequency may be set too high. IMPORTANT: Some A/V receivers provide compatibility with the higher sampling frequencies through alternate connections. Consult the owners manual for specific information.
  6. Unplug the AC power cord for approximately 1 to 2 hours to reset the output transformers.
If the issue is still unresolved, service may be required.


My $.02...


Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.

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It keeps shutting of and the power light just flashes if there is too much bass? what do i do? the volume is low to begin with


Hello, the protect circuit is likely detecting a damaged speaker or speaker wire.Check the unit with one speaker at a time connected, or if you have an ohmmeter measure each speaker they should read approximately 8 ohms.When you connect a speaker thats bad the unit is designed to shut down and flash protect.

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Wire antena (that came with SS5 system) causes a hum


It is assumed that the hum is coming down the aerial wire it self....The hum should be eliminated
dissappear if you remove the wire from its connector at the rear of the receiver.

If this is the case then reconnect the aerial and try to find a radio station to listen to..

When you find a station you will find the hum dissappears as follows:

When there is no station detected the receiver tweaks up its sensitivity via the Automatic Gain Control, (AGC) and when this happens any thing that is detected on the aerial is reproduced at the speakers and in your case its just a hum.

I have heard this event lots of times and mostly its scrackles or scratchs or other weird sounds which come down the aerial while the AGC is flat out at maximum..

The radio station transmits a sound "carrier" and within this carrier there is the music content.

The receiver detects the "carrier" when you tune to the radio station, and then it sets its receive
level to the setting made by the volume control and then lovely music is presented at the speakers..

So in fact your receiver is working as it should be ,.,,, no worries mate....

Now if the hum is still there when the music is there then you have a fault, but as you havent mentiond this aspect your receiver is in my view quite "normal".

Cheers For Now
From YUBEUT..


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