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The batteries are new but when we push the button on top to make it sing and move it just stops still.

Ashley, There may be a loose connection inside the train or the batteries may not be making contact with the train to power it up. The worse case scenario is that one of the components on the circuit board malfunctioned or overheated and may need replaced. First, take a look at the battery compartment. Make sure that all of the metal is shiny and clean. Any type of debris or rust can block the batteries from powering the toy. Also make sure that the batteries are not loose, they need to be snug and secure. If you can provide some pictures of the toy, that would be helpful to look at and diagnose. The next step would be to remove the screws and open the toy train up to look inside. If you decide to do this, post some pictures of the insides and we can look to see if anything doesn’t look right.

My codeapillar starts well and also all the lights lit up as well. However nothing happen when I attach any compartment to it. When I press go it will move an inch then its eyes glows red, later it will stops. Please help, I have total 14 attachements and I dont want to throw it away. Thanks

I had this type of problem. I measured the battery voltage before pressing the button and it was ok. Then I pressed the button and watched the voltage. It plays music for a couple of seconds and the voltage was ok. Then the motor kicks in and the volts drop. In my case the drop was as low as spent batteries so the train jerks and stops. I had some ALBA chinese batteries in at the time. I changed to Energizer batteries and the train now works.

Can some one please help me , i have a vetch toy aeroplane and one fisher price small musical robot , when i put the new batteries, they only do a buzz sound and stop working, i takeout the batteries and put it again they only do a buzz of music fr a second and stops again, i dont want to throw it and my little girl really want that mummy fix it. there is no corrosion in the battery compartment, its all clean. please help me