Question about Motorola Mobility MBP33 Baby Monitor

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No sound on parent unit

WHAT I'VE TRIED: Increased the volume on the parent unit, Checked that the baby unit is plugged in, Checked that the parent unit is ON, Checked that the baby unit is ON, Ensured the parent and baby unit are not out of range, Lifted the antenna on the parent unit for optimal reception. The signal strength is at full, Checked that the baby unit still emits sound when talk button on parent unit is pressed, unplugged the baby unit and removed the battery from parent unit for 15 seconds to allow a reset, re-paired baby unit to parent unit and ensured parent unit was not dropped or had any liquids spilled on it. After trying all of that the parent unit is still not emitting any sound. Do I have a lemon? :(

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  • Christan Kirby Nov 09, 2012

    Did you try adding a new battery? Do you have an adapter that you can plug it into the wall outlet?

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Posting this all over, common issue...



Okay, a couple of things.



This speaker issue seems to be a common problem, and I believe it most likely occurs due to rough handling of the unit. Although it seems to be fairly rugged, it should be treated gently. In general, I would only handle it as much as needed, and be careful when setting it down, and make sure it doesn\'t get dropped.



With that being said, the unit can be opened, however doing so will break at least some of the "snaps" that hold it together. If it is out of warranty and you need to get into it, this is a necessary evil.



Step one: Remove the battery cover (one phillips screw) and battery. There is a second, smaller phillips screw that also must be removed.



Step Two: At this point, you are ready to separate the unit. Using multiple flat head screwdrivers, pry the unit open (starting on the right side when looking at the unit from the front) then "wedge" the pried open area with a second flathead screwdriver as it will naturally want to close back up. Continue working your way around the unit, being careful not to crack the screen. You will break some tabs along the way, but I see no way around this as they are not visible to try and release them any other way.



Step Three: Once you have separated the two halves of the unit, the power button will have fallen out. This is okay as it will slot back into place when you reassemble the unit. Just set it aside and do not lose it.



Step Four: I do not know the exact failure mode of the speaker, however you will find that it is apparently strongly secured in the housing with an adhesive (epoxy or some sort of resin) and if you had to remove it it would be difficult and not very fun.



MY SOLUTION: I hooked the battery back up and turned on the music feature, which should play music from both the camera and the parent unit. In my case, I found that tapping hard on the speaker (it took more force than you would think) would cause the music to momentarily play. I found that wedging a screwdriver between the plastic housing and the speaker body would make the speaker play. I used a small nail (like a trim nail for small trim) and wedged it between the speaker and the housing, then trimmed off the excess of the nail.



This solution is not ideal, but it was relatively quick and worked to keep the unit functioning for now. I imagine that there is some sort of connection that has failed internally in the speaker, and that wedging it has (at least temporarily) reformed the connection. I imagine that a new speaker could be installed with some work to remove the old speaker, and then a new one soldered in and glued into place.



Once I got the speaker working, I disconnected the battery and carefully replaced the power button, then the two halves simply snapped back together. I replaced the screws and reinstalled the battery, and all has been working as it should. The case does show some damage from my prying, and it doesn\'t fit as tightly as it used to with the broken snaps, but it does hold together and doesn\'t have any issues in normal use.



In all, it certainly beat buying a whole new unit, especially since it was working just fine other than the sound. Good luck!

Posted on Feb 21, 2014

  • Alexandre Dal Forno
    Alexandre Dal Forno Apr 14, 2014

    Thank you very much Christian! I follow your orientation and my parent unit returned from the silent.

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I've replaced my parent unit 4 times already because of this sound issue, I have four camera's attached so thats why I keep replacing it. The sound of my 5th unit just went out. This is ridiculous. I'm not sure what I'm going to do this time. I speen t agood deal of money on this unit. Im not sure if there is a similar unit with these features on the the market.

Posted on May 14, 2013

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Instead of tapping the screen face, try holding the right side of the unit in your right hand (front side facing you) and gently slapping the back left side (where the speaker is) against your left palm. Worked great for me when tapping the front yielded no positive result. You might also want to verify the volume is turned up 1/2 to full before the tap or slap methods.

Posted on Oct 26, 2016

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I had the same issue. It was definitely something internal to the speaker. My unit was out of warranty, but Motorola offered to replace it for "only $140, if I returned the defective units". I declined (since it can be purchased new for $150, currently), and instead decided to try and fix it.

Opened up the unit (per Christian Budd's instructions, see his Answer). Took note of the speaker specifications (8 ohm, .5w, 29mm diameter). My local Radio Shack had one that seemed to fit the bill: https://www.radioshack.com/products/radioshack-8-ohm-mini-speaker.

The original speaker came out pretty easily. Just take a small screwdriver and jam it between the circular plastic housing and the speaker, then remove and work your way around, cutting your way through the adhesive. I was able to pry the speaker out without damaging the plastic housing after freeing about 2/3 of the perimeter adhesive. Obviously I was not worried about salvaging the original speaker, and it was destroyed in the process.

Cut the original speaker wires, after noting the colors/solder locations.

Tested the new speaker hookup by touching the wires to the solder locations. It worked. Soldered the new wires in place, then seated the speaker and put a couple dabs of hot glue on the back to hold it in place.

Success. $4 in parts and 20m of my time.

Posted on Dec 19, 2015

  • Clifton Phelps
    Clifton Phelps Dec 15, 2016

    I got this speaker at my local RS, it's the same part # but came in a Rated 0.1W, Max 0.2W. It tried to test where the old speaker was, but nothing. I'm a total novice at this stuff. Will the speaker work at the rating above?

  • Clifton Phelps
    Clifton Phelps Dec 15, 2016

    I got this speaker at my local RS, it's the same part # but came in a Rated 0.1W, Max 0.2W. It tried to test where the old speaker was, but nothing. I'm a total novice at this stuff. Will the speaker work at the rating above?

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I confirmed that it is the speaker itself that is kaput, and not the electronics. In my case I cracked the case and put a multimeter on the leads going to the speaker. Sure enough, there was AC there. I then hooked the leads up to a small 8 ohm speaker, and I heard sound from the camera unit.

I have 30 and 28 mm speakers (0.5 watt, 8ohm) on order from Mouser. If I can't get the old speaker out of the epoxy, I'll jury rig an external speaker enclosure.

I really wish I didn't have to do this, but this Model (MBP33) is discontinued, and none of the new models are compatible with the old cameras (I have three of them). So, it's either this or spend several hundred dollars on a new parent unit and 3 cameras.

Posted on Aug 21, 2015

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We had the same problem, had the monitor for nearly a year and no problems till recently. I tried all the suggestions people posted on blogs and forums but no luck. the parent unit didn't even make the screeching noise when near the camera. I rotated the camera using the parent unit so the the camera lens was in line with the arrow on the base and thank God it works!!

Posted on Jan 26, 2015

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Our baby monitor support is provided by Looking For Help in the U S. If you are outside the US visit Motorola Support Find Answers Motorola Mobility Inc then choose your country and then look for the local baby monitor support contact info. Our mobile phone support team doesn't assist with this product line.

Mark
Motorola Support

Posted on Jan 05, 2015

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Am from malaysia.. the same thing happen to me!! how on earth could a baby camera which is so expansive have a lousy quality.

Posted on Jan 17, 2014

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We had this camera and the sound on the parent unit went dead. so i took it back and got a whole replacement unit from the store. we've had the replacement for about a week now, and the sound went dead again. heres what i found from an extended owners manual on motorola.com:
Make sure the baby and parent units are not near other electrical equipment, such as a television, computer or cordless/mobile telephone.
2. Use of other 2.4GHz products, such as wireless networks (WiFi routers), Bluetooth systems, or microwave ovens, may cause interference with this product, so keep the baby monitor away at least 5ft (1m) from these types of products, or turn them off if they appear to be causing interference.


i'm returning ours. whats the point in having a monitor that you basically can't use in the house without shutting down all electrical appliances!

Posted on Apr 29, 2013

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I was having this same issue and I followed Dimitry's advice and tapped the screen - and the audio came back on. So far it's staying on, but I'm still going to call Motorola to get a new monitor sent to me.

Posted on Mar 20, 2013

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Same problem after 2 weeks.. If I tap the monitor lightly, sound comes on for few minutes then no sound again..

Posted on Dec 23, 2012

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Mine just did the same thing starting the other night. i'm pulling my hair out trying to figure what is wrong. Thinking about taking it back to the store for another one. Mine is only 5 weeks old!

Posted on Nov 16, 2012

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