Nokia 6020 problem

Some time ago I got a job again, which is to repair the Nokia 6020. Early damage, this phone does get wet. The owner forgot to remove it from his pants pocket, then pants are inserted into the machine, you'll know what happened? Mobile Nokia 6020 is dead.
The first step I do is wash the PCB board with ultrasonic cleaner. Once dry, I try to turn the mobile phone and turned it on. However, problems still occur on a mobile phone when not fitted with a SIM card, mobile phone power on normally. However, when installed SIM Card, phone alive but died instantly.

This happens because the IC PA problematic. To ensure that the PA problem, you may remove the L7700. These components are connected with Vbatt PA IC. After removing L7700, turn on the phone with a SIM card, when lit with a normal mobile phone (without signal of course), then certainly there are problems in the Power Amplifier IC. Change the Power Amplifier IC with the new one.

0 Response to "Nokia 6020 problem"

Post a Comment

Subscribe to: Post Comments (Atom)