Sony CFD-8 Main Circuit Board Replacement

Remove the battery cover on the back of the boombox by applying downward pressure to the two clamps.

• Be sure to unplug the boombox from the wall before attempting to open it for repair.

Push against the positive end of each battery. Once it is loose, lift the battery out. Repeat for all six batteries.

• The top row of batteries have the positive side pointing right. The bottom row of batteries have the positive side pointing left.

Hold the boombox handle at an angle to access the screws behind the CD player.

Use a Phillips #1 screwdriver to unscrew the top two 14 mm screws. You may need a flashlight to see the screws.

Remove four 14 mm screws using a Phillips #1 screwdriver. Two of these screws are at the bottom of the boombox and the other two are on either side of the boombox as highlighted in the related images.

All four screws have black arrows (not visible in the photo) indicating their location on the boombox.

Gently separate the front panel from the back panel.

Remove the two connections holding the front panel to boombox.

• One connection is located on the upper left hand side of the main circuit board.
• The other is a large white strip slightly to the right of the cassette player.
• Do not touch the cylindrical parts on the circuit board. These are capacitors and may deliver a shock!

Remove the front panel.

Use a Phillips #1 screwdriver to unscrew the four 12 mm screws that connect the cassette motor to the brackets.

Wiggle the cassette motor to remove it from the two brackets. Do not remove completely; only separate the motor from the two brackets.

Remove the two wire sets that connect the cassette motor to the main circuit board.

Completely remove the cassette motor.

Use a Phillips #1 screwdriver to unscrew the four 12 mm screws that connect the brackets to the main circuit board.

Gently pull the brackets outwards to remove them.

Use a Phillips #1 screwdriver to unscrew the 10 mm screw located on the top left of the tuner wheel bracket.

• Separate the tuner wheel bracket from tuner wheel.

Use a Phillips #0 screwdriver to unscrew the 6 mm screw in the center of the tuner wheel.

Remove tuner wheel completely.

Use a Phillips #1 screwdriver to unscrew the five 10 mm screws located on the main circuit board.

Disconnect the six wire sets that connect to the main circuit board as shown. Each of the wires have 3-6 prongs.

Use a pair of tweezers to pop off the volume and tuner buttons located on the top left of the boombox.

Gently wiggle and pull the main circuit board outwards until it is fully removed.