For burnt capacitor, we can find it easily from the appearance;
For leaky capacitor, we can also measure the resistance of capacitor with a multimeter, which will show such a feature: Compared with the circuit, the resistance value is smaller.
High-quality and Low-cost
PCB Manufacturing Services
1 to 30 Layers
100% Electrical Testing
FR-4/Rogers/Teflon
Controlled Impedance