Nokia Lumia 800 Power Solution

Now check battery connector for any traces of water damage, if there are traces of water damage than clean it.
Re-solder battery connectors and check. You have to re-solder batter connectors either it was found to be water damaged or not.
In case battery is charging properly but phone is not turning ON then the next thing that you need to do is to replace power button strip, as this might also be the cause of problem. After replacing power button, check the status of problem. (Power button strip also includes Volume buttons and Camera button).
Check all the capacitors for any kind of water damage or whether they are short or not, in case any of them is water damaged or short, replace it.
Now Check the continuity of Capacitor – 1 with the +VE terminal of battery, if there is no continuity then replace Capacitor – 1.
Check Transistor with the help of a multi meter; replace it if it is found to be faulty.

Now check connection between Capacitor – 2 and +VE terminal of the battery, replace it if it is found to be fault.

If you have replaced Capacitor – 2 and it is still found to be faulty then you need to change Power AMP IC, as this might be causing the problem. Gently heat Power AMP IC and Check, if it is still giving the same issue, replace it.

If you are facing similar issue even after replacing Power AMP IC, then it means your phone’s board is water damaged. Inspect your entire phone’s board for any traces of water damage, clean all the affected areas and check. This should solve the problem.

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