Use tools like OpenBoardView or Telesky to view .brd or .bdv files. ⚡ Key Power Rails & Diagnostic Points
Open the schematic for LA-E802P. Search for B+ or Vin . The schematic shows that B+ goes to several power stages. Dkl50 La-e802p Boardview
If a component is knocked off or burned beyond recognition, the Boardview identifies its part number and value. Use tools like OpenBoardView or Telesky to view