crwdns2915892:0crwdne2915892:0
The mainboard controls all of the software on the Nikon D40. A faulty mainboard can cause problems that will require a new board. This guide will show you how to replace the camera's mainboard.
crwdns2942213:0crwdne2942213:0
- 
   
   - 
                     
            Remove the two visible 6.0 mm Philips #0 screws on the left and right sides of the viewfinder. These screws are highlighted in red. 
 
- 
                     
            
- 
   
   - 
                     
            Remove the four 6.0 mm Philips #0 screws on the left and right sides of the camera. 
 
- 
                     
            
- 
   
   - 
                     
            Remove the four highlighted 3.0 mm Philips #0 screws on the bottom of the camera. 
 
- 
                     
            
- 
                     
                                                
- 
   
   - 
                     
            While pulling the bottom down, remove the back of the camera. 
 
- 
                     
            
- 
   
   - 
                     
            Remove the solder connecting the red wire to the mainboard. 
 
- 
                     
            
- 
   
   - 
                     
            Desolder the 4 smaller wires near the bottom of the mainboard. 
 
- 
                     
            
- 
   
   - 
                     
            Use the plastic opening tool to release the ribbon cables attached to the mainboard. 
 
- 
                     
            
- 
   
   - 
                     
            Remove the five 3.0mm Philips #1 screws holding the mainboard down. 
 
- 
                     
            
- 
   
   - 
                     
            Lift the mainboard up to reveal the final connection. 
 
- 
                     
            
To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
crwdns2935221:0crwdne2935221:0
crwdns2935229:06crwdne2935229:0
crwdns2947412:03crwdne2947412:0
What is the ordering of the small wires on the bottom? It is hard to put back together from the photos. Thanks!
wheres the power source? i mean the fuse
in the main board located kindly put markings on it
