Thursday, November 10, 2016

Bose SoundTouch 20 – Disassembling procedure – How to replace the spacers – How to remove the amplifier – Audio system repair and service

Category: Audio System Repair and Servcie 

Contents of this article 

  • How to remove the case
  • How to replace the speakers 
  • How to remove the Amplifier 

Bose SoundTouch 20 

Bottom Cover Removal
Remove the 6 screws indicated
Lift off the bottom cover.
I/O PCB RemovalRemove the FFC from connector J606.
Remove the four screws securing the I/O PCB.
Lift up the I/O PCB and disconnect the cable harness from J610. Figure 
Disconnect the FFC from J607.
Press on J605’s two connector release tabs and carefully pull out the FFC.
Side Panel RemovalGrasp the side panel and slide it upward to remove the side panel from the enclosure.
Grille and Top Cover Removal
Remove the two screws securing the grille assembly to the bottom of the matrix.
Remove the two screws, on either side, securing the grille assembly to the side of the matrix.
With the unit on its back, lift up on the lower part of the grille and rotate it backward until grille and top cover are disengaged.
Remove the FFC from the button and display PCB.
Important Note: Take ESD precautions when disconnecting the OLED display.
Button PCB Removal
Remove the four screws securing the button PCB to the top cap. Slightly lift up the foam to expose to the two screws furthest from the grille.
Remove the six screws securing the display assembly to the grille. Lift out the display assembly.
Important Note: Take ESD precautions when connecting or disconnecting the OLED display.
Important Note: The display assembly must be replaced with the display assembly listed in the main part list. There are different OLEDs that need to match the display PCB. The display assembly listed in the main part list uses a matched OLED and display PCB.
Wi-Fi Module RemovalRemove the FFC from J902 and J802.
Remove the two screws securing the WiFi Module to the matrix and lift out the Wi-Fi Module.
Remove the FFC from J901. Press on J801’s two connector release tabs and carefully pull out the FFC.
Baffle and Driver Removal
Remove the 16 screws securing the baffle to the matrix.
The baffle gasket might cause it to stick to the matrix. Using a flat tool, slightly pry up on the top edges. Lift up the top edge of the baffle.
Note: If the baffle gasket peels away from the baffle, a new baffle with gasket should be used to prevent air leaks.
Disconnect the amp/power supply harness J200. Disconnect the driver harness connectors J302 and J303.
Remove the drivers from the enclosure. Lift out the baffle with amp/power supply PCB connected.
Amp/Power Supply PCB RemovalRemove the four screws securing the amp/ power supply shield.
Remove the two screws securing the amp/ power supply to the baffle. Lift out the amp/ power supply PCB.