How to Identify a Bad Voltage Regulator

A bad voltage regulator can be easily identified with one of these symptoms:

1. Heating: Its temperature will be higher than usual working temperature.
2. Ripple generation: It'll generate ripples instead of constant level voltages.
3. Output current: Its output current will be zero or very small.
4. No output voltage: Its output voltage will be zero.

Obviously, you'll need a multimeter to test the voltage regulator.