Introduction

Follow these instructions to remove and replace the transformer in your boombox. This requires some simple soldering, so make sure you have a soldering iron handy and know how to use it. An easy step-by-step guide to soldering can be found here.

Image 1/2: With two fingers, pinch the tabs and lift up to open the battery protection cover. Image 2/2: With two fingers, pinch the tabs and lift up to open the battery protection cover.
  • Flip the stereo so the CD opening is face down.

  • With two fingers, pinch the tabs and lift up to open the battery protection cover.

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Image 1/2: Repeat until all eight batteries are removed. Image 2/2: Make sure the batteries are facing the right direction. If the device does not turn on, you may have the batteries in the opposite orientation.
  • Using a spudger or your fingers, push up against the positive end of the battery. Once it is loose, lift the battery out.

  • Repeat until all eight batteries are removed.

  • Make sure the batteries are facing the right direction. If the device does not turn on, you may have the batteries in the opposite orientation.

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Image 1/1:
  • With a Phillips #2 screwdriver, remove two 2mm screws.

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Image 1/2: Use the same screwdriver to remove four more 6mm screws along the outside of the case. Image 2/2: Use the same screwdriver to remove four more 6mm screws along the outside of the case.
  • Using a long Phillips #2 screwdriver, remove one 6mm screw located inside the battery compartment.

  • Use the same screwdriver to remove four more 6mm screws along the outside of the case.

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Image 1/3: The bottom cover has two red and two yellow wires attached to it that you don't want to pull off. Handle the casing carefully. Image 2/3: Once the pieces are separated, pull them apart and place the bottom cover aside, near the stereo. Image 3/3: Once the pieces are separated, pull them apart and place the bottom cover aside, near the stereo.
  • With a plastic opening tool, wedge the bottom shell from the main speaker face along the edge.

  • The bottom cover has two red and two yellow wires attached to it that you don't want to pull off. Handle the casing carefully.

  • Once the pieces are separated, pull them apart and place the bottom cover aside, near the stereo.

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Image 1/2: Remove the transformer and set it to the side. Image 2/2: Remove the transformer and set it to the side.
  • Using a Phillips #2 screwdriver, remove two 4mm screws from the transformer box.

  • Remove the transformer and set it to the side.

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Image 1/1:
  • Remove the solder connecting the two yellow wires to the green quarter-circle board.

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Image 1/3: Use a Phillips #2 screwdriver to remove two 4mm screws from the converter. Image 2/3: Remove the converter. There will be a plastic casing that slides off; set this aside. Image 3/3: Remove the converter. There will be a plastic casing that slides off; set this aside.
  • There will be a strip of electrical tape securing the converter. Use scissors to carefully remove this tape.

  • Use a Phillips #2 screwdriver to remove two 4mm screws from the converter.

  • Remove the converter. There will be a plastic casing that slides off; set this aside.

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Image 1/1:
  • Remover the solder from the red and yellow wires on the converter.

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Conclusion

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

Jacob Phillips

Member since: 10/14/2013

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Cal Poly, Team 4-31, Amido Fall 2013 Member of Cal Poly, Team 4-31, Amido Fall 2013

CPSU-AMIDO-F13S4G31

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