Little Tikes Tobi 2 Interactive Karaoke Machine Circuit Board Replacement

はじめに

The circuit board is the central component of the Little Tikes Tobi 2 Interactive Karaoke Machine, acting as its "brain" and enabling the entire system to function. It serves as the core hub to which almost every other part—such as the screen, speakers, buttons, and power supply—connects. The circuit board is responsible for processing inputs, coordinating actions, and sending commands to all components to ensure the device operates smoothly and performs its intended tasks. Without a functioning circuit board, the device cannot power on, respond to user interactions, or execute any features.

If you need to replace the main circuit board of your Little Tikes Tobi 2 Interactive Karaoke Machine, follow this guide.

Before you begin this repair, make sure your machine is off and the batteries are removed.

This guide requires soldering. Be careful when using the soldering iron as it is extremely hot and will cause burns. Refer to this guide on Soldering/desoldering connections for details on how to solder.

必要な工具と部品

手順1 Battery

Little Tikes Tobi 2 Interactive Karaoke Machine Circuit Board Replacement, Battery: 手順 1、 3の画像 1

Little Tikes Tobi 2 Interactive Karaoke Machine Circuit Board Replacement, Battery: 手順 1、 3の画像 2

Little Tikes Tobi 2 Interactive Karaoke Machine Circuit Board Replacement, Battery: 手順 1、 3の画像 3

Use a Phillips screwdriver to remove the single screw that is holding the cover to the battery compartment.
If the screw doesn’t come out right away, use a spudger to gently lift the edge of the battery compartment in the recessed area while continuing to unscrew it with your other hand.
Use a spudger to carefully pry off the battery cover.

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手順2

To easily pop out a battery, use your thumb to push the battery from the flat side down toward the coil and pull the battery outward.
Remove all four batteries.
Take a new AA alkaline battery and position it in the correct orientation. Insert the flat side of the battery facing the coil first, then press the raised side down. Ensure this second battery is oriented in the opposite direction to the first. Continue replacing the batteries in an alternating pattern.

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手順3 Case

Little Tikes Tobi 2 Interactive Karaoke Machine Circuit Board Replacement, Case: 手順 3、 1の画像 1

Use a Phillips screwdriver to remove four screws from the base of the device.
If the screws don't come out, you can gently lift them with the screwdriver tip or push them out from the other side once they're all loosened.
Remove the bottom of the karaoke machine.
Don't pull it apart roughly as it is attached to internal cables and they may be damaged in the process.

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手順4

Use a Phillips screwdriver to remove the four screws from the interior of the white base.

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手順5

Use a Phillips screwdriver to remove the four screws from the exterior black plastic part of the case.
Use a spudger to disassemble the case.

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手順6 Circuit Board

Little Tikes Tobi 2 Interactive Karaoke Machine Circuit Board Replacement, Circuit Board: 手順 6、 1の画像 1

Use a Phillips #0 screwdriver to remove the two screws from the green circuit board.

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手順7

Use a soldering iron to desolder the wires from the circuit board.
Exercise caution when soldering, as the soldering iron is extremely hot and can easily cause burns.