Treblab HD77 Motherboard Replacement

Remove the outer casing of the speaker by prying at the edges to unlock each prong holding the casing to the speaker.

Remove the plastic ring on top of the rubber surround on the side of the speaker by lifting it gently.

Insert the blade of a small precision knife between the edge of the rubber surround and the plastic edge.

Gently apply pressure and slide the blade in a circle along the entire circumference until the surround loosens and can be removed.

Slide a small precision knife underneath the LED light strip and remove the adhesive holding it in place.

There are four points where adhesive is used to hold the LED light strip down.

Lift up the LED light strip from the plastic casing.

Flip the LED light strip upside down to see where the cord is plugged in.

Gently pinch the wire with your pointer finger and thumb, and remove the cord from the LED slowly.

Using a Phillips #0 screwdriver, remove all four 10mm screws that were exposed by removing the LED light strip.

Lift the plastic ring once all the screws have been removed.

Slide the inner electronics casing out from the outer tubing encasing it.

Unscrew the six 10mm screws holding the two halves of the electronics casing together using a Phillips #0 screwdriver.

Insert the blade of an Xacto knife in between the edge of the rubber button cover and the extruded edges holding it in place.

Gently trace around the edge until you feel the cover beginning to loosen, and then slowly peel the cover up.

Using a Phillips #0 screwdriver, unscrew the six 5mm screws holding the circuit board in place.

Turn the speaker over to the side with the charging port dock, and gently pull the two halves apart by firmly grasping each half until they separate.

Pinch the wire connecting the circuit board to the motherboard between your thumb and pointer finger, and gently remove the wire from the circuit board.

Orient the speaker so the motherboard is on the bottom half, facing up, and the circuit board cutout is facing you.

Using your thumb and pointer finger grip the plug connected to the large red and black wires at the top just below the extruded lip, and gently lift until the plug comes out.

Using your thumb and pointer finger grip the plug connected to the small red and black wires at the top just below the extruded lip, and gently lift until the plug comes out.

Take each half of the speaker and unscrew the four, 5mm screws that hold in each diaphragm, using a Phillips #0 screwdriver.

Only remove the diaphragm on the side with the motherboard.

Using a Phillips #0 screwdriver, unscrew all six 5mm screws on the motherboard.

After completing steps 10 and 11, the diaphragm and motherboard should both be loose and free to move.

Let the diaphragm hang out of the bottom from its hole and lift the motherboard out of its place.

Using your pointer finger and thumb, pinch the top of the plug for the diaphragm from the top just under the extruded lip, and gently lift it up until it unplugs.

Use a pair of flush cutters to cut the wire connecting the two diaphragms so the motherboard can be removed.