hello all, today we will try to repair the angelcare baby monitor.

two rechargeable battery's exploded, the acid was around an electric power cable. so there were two problems :

1 bad connection

2 battery damage.

we will check also the second unit.

  1. first remove the 2 screws at the green plastic plate.
    • first remove the 2 screws at the green plastic plate.

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  2. remove the plastic plate ( battery compartment)
    • remove the plastic plate ( battery compartment)

    • you'll see that there are 2 more screws. Remove them.

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    • now gently remove the green plastic plate arrounf the baby monitor ( arround the screen) use a spudger to click it open.

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    Spread the Fixmas cheer.


    Spread the Fixmas cheer.

    • now open the monitor by clicking it open or slide it open. Sometimes its easier to use a spudger.

    • be carefull for the electric wires.

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    • 2 battery's were exploded so the acid was on the black electric power wire.

    • use a cotton swab with a little bit of destilled water.

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    • remove the 2 PCB's by removing the screws shown in the picture.

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    • pull the first PCB up and remove the screws of the second PCB.

    • after removing the two PCB's, clean the acid on the PCB.

    • after cleaning the PCB's put it al together again.

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    • first remove the battery lid. 1 screw.

    • slide it out like you see in picture

    • remove battery's

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To reassemble your device, follow these instructions in reverse order.

5 other people completed this guide.

Kevin D

Member since: 05/02/2014

5,658 Reputation

21 Guides authored


Thanks for this. I couldn't figure out how to get the blue clip off without breaking it to clean some dirt on the screen. Googled it, found this, job done.

Pete H - Reply

Sometimes the activity of the reference quartz is 11,150 MHz, and the devices do not find each other.

I have so repaired the parent module.

Dmitriy, the city of Volzhsky.

Dmitriy N - Reply

Hi Dimitriy - I am experiencing the issue with not finding devices each other. How have you fix it ? Is it a matter of replacing the reference quartz with new one ?

Jan - Reply

Hi. At my Angelcare (AC401) parent unit the screen has slowly become worse and worse. At first, parts of the temperature figures dissapeared, then the symbols around and now I no longer see anything... But the unit still works! (And alert me if the baby's crying) What do you think, is there anything I can do or do I need to buy a new one?

Terese Rehn - Reply

Hi There. I’m having the same problem. Did you find a fix or did you buy a new unit?

Eugene -

Screen repair:

1. Disassemble according to the above instructions. There is no need to take the screen out of its plastic housing.

2. Position the screen so you can see the ribbon coming to it and its contacts. From now on, the screen should not be moved.

3. Use a hair dryer or similar device and heat the PCB at the spot where the ribbon contact cable is attached to the PCB, leading to the screen. Heat it well enough its hotter than you can touch - the plastic on the nearby condensers and other glues should become soft.

4. The screen shall become transparent when hot, and black when getting colder. Worry not.

5. Use a tool to press the ribbon harder onto the PCB.

6. While at it, press with your fingers also where the ribbon enters the screen, I cannot say on which side of the ribbon your problem lies. Both shall be hot, they’re near.

7. Blow some cold air over it, leave it to cool.

8. Assemble it back to the original Step 4, test.

9. Mine works all but the two lower bargraphs!

10. Else, new PU is 36eur.

maybezweistein - Reply

Hi there. I am having a problem with the monitor unit. Whenever I connect the power or the breathing monitor. It stops broadcasting. Only on batteries it broadcasts to the parent unit. Parent unit is fine, and the connection is also fine.

Lukas - Reply


PCB have no corrosion due to battery leakage?

Kevin D - Reply

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