Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
vivo X21i inlet rear camera black screen repair
Machine model: vivo X21i
Malfunction: The machine is water damage, the front can be turned on, and the rear camera screen is black or frozen can be turned on.
Fault analysis:
water damage is either corrode VCC or corrode bus. Look for corrode area.
Maintenance process:
Next to camera BTB connector is camera MOSFET.
vivo X21i inlet rear camera black screen repair Figure 1.
Remove pin and corrode at the bottom of the pentagonal tube. After cleaning, the fault still remains.
vivo X21i inlet rear camera black screen repair Figure 2.
There is also a four pin tube below, which is also VCC. The bottom pin is also corrode. Clean and replace it.
vivo X21i inlet rear camera black screen repair Figure 3.
Maintenance results:
Boot test, perfect repair.
vivo X21i inlet rear camera black screen repair Figure 4.
