Intro
In this post we are a bit diverted from our main focus, but we feel this is an important topic which worth it. We would like to share our experience in repairing a card shuffler #ReduceElectronicWaste. In these days people tend to throw away electronic devices without any hesitation.
Investigation
So let’s dive into the details! After removing the screws and opening the device we again realized that simplicity rules :)! The two battery holder which are holding the four AA battery are wired in series and they are just soldered on the motors terminals. In the middle there is a push switch which can be operated by the user which is closing the gap between the battery holders and that is it. Then if it that simple what could go wrong? Well we assumed the the motors are operational so we did not check them one by one. We started to investigate the power terminals of the motors and realized that no power is provided to the terminals. Hmmm nice that is something! Using a multi meter we started to measure voltages on the battery holders. Wow! None of the compartments terminals have actual voltage… Investigating further we realized that there is no contact between the batteries and the holder so not even inside the compartment we have a ‘circuit’. We have found the root cause!
Solution
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