Nokia 1800 test mode solution

Many area can be a test mode problem with nokia 1800 times phone.Maximum this problem for water damage . When a drop of water phone can create many tests one problem.but now show how to fix it . How to do this job: Washing pcb full use gasoline or thinner carefully and strike with Stan Lite 5 10minit see the result if the same problem , then check the yellow line and parts of red marks .