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The Silence of the Toys

Step 5Verify Functionality

Verify Functionality
Before you screw up (the case), make sure you haven't screwed up!

Put the batteries back into the compartment of the back of the mobile, and turn it on from the front panel. With the switch in the "high volume" position, the music should start up pretty loud. Flipping the switch over to the "low volume" position should quiet it down some, but it's still there. Finally, putting the switch in its center, vertical position should turn off the sound completely.

If you don't have sound when you turn on the mobile, start troubleshooting:

-- Are the batteries installed correctly?

-- Is the green ON light illuminated on the front panel? If the red "remote" light is on, push the switch again.

-- Check the exposed contacts and solder joints. Use a multimeter to confirm continuity along the leads from the speaker through the switch. and check for continuity or open-circuit between the contacts when the switch is in each position.
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Author:kelseymh
I've been an experimental high-energy physicist for 20 years (since I started graduate school in 1988). I got my BS in physics from UCLA, my Ph.D. at Caltech, and did a post-doc at UBC before moving ...
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