KDL-42W650A - Sony TV Service Manual (repair manual). Page 17

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KDL-42W650A 13
SECTION 3 - REPAIR INFORMATION
3.  Slide brackets to detach from Main Board.
BRKT SIDE DC
BRKT SIDE TUNER
BRKT UNDER
4.  Locate and remove screws, then lift the Main Board to detach.
5.  Install the new Main Board and screws.
6.  Reconnect the LVDS Cable and all other connectors.
7.  Update the Software.
After ALL repairs UPDATE the SOFTWARE to the latest version. 
Instructions are included with the Software package on the Sony 
website.
a.  Insert the USB device with the latest Software into one of the TVs’  
 
USB ports.
b.  Connect TV to AC power.
c.  Wait at least 20 seconds.
d.  Press 
POWER
 on the remote to turn ON the TV.
e.  Wait until the Software update is complete.
5. 
After removing screws, firmly grasp as shown to separate Chassis Box 
from TV.
6.  Grasp and pull upwards on left and right side of Chassis Box to release 
clips. Lift it upwards to detach.
REPLACING THE MAIN BOARD
The Main Board used in these models is available for repair. For Part 
Number information refer to
 
Section 4 - Exploded View/Part Number 
Information on page 18.
1.  Remove Harness and screws from the Main Board Bracket. 
2.  Turn Main Board Bracket and disconnect the remaining connectors.
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