Samsung Laptop Model RV509 Dead No Power Case Study

[Dhirendra Gaur]

#Make Samsung
#Model-RV509


Make/Model- Samsung RV509
Motherboard Part No- scala2_EXT Rev: 1.4 (Motherboard Part no showing RV511)
Processor Type-i3 1st gen
Ram Type –DDR3
PCB Type – Intel with Graphics
Problem –Dead No Power
Diagnosis-Step-Down Controller (TPS51125) Faulty
Process-
Coming laptop Samsung rv509 and problem not on checkout motherboard and found not generate charging and system power supply then checkout input power supply charging IC and Step-Down Controller IC voltage, found Step-Down Controller (TPS51125) IC Input voltage not coming input pin no-16 .found one resistance 0ohm open after replace resistance Step-Down Controller over heat after replace Step-Down Controller generate charging and System Power supply . And system working fine