Hi @dvp [br]
Here's some information that may help.
[document|39229] [document|39230] [document|39228]
Go to p.7/50 in the ''Troubleshooting'' manual to view the troubleshooting flowchart for the ''phone does not power on'' problem.
Use the search function in your browser to find the location of the components in the board layout diagrams nominated in the flowchart. You may have to zoom in a lot to find them.
If you find a component is faulty, locate the component designation in the electrical parts list to find the ''Samsung part number'' for the part. Search online for the part number to find suppliers that suit you best.