0
A multimeter draws next to no current, so will not effectively test the power supply under load.
The voltage on the meter is averaged out and so will not show ripple current, or spurious dips in the supply.
You will need an oscilloscope to check for ripple current (poor smoothing) and the supply needs to be under a load.
What else can I help you with?
You suspect that a power supply is faulty but you use a multimeter to measure its voltage output and find it to be acceptable Why is it still possible that the power supply may be faulty?
Yes, it can be faulty. Some damaged power supplies show good output voltages on the voltage range of a multimeter but, when you connect them, they don't work properly. One possible reason is that maybe an IC in its voltage regulator has a high resistance between the common and the output. You cannot see this by shunting a voltmeter onto it. You have to place a typical load onto the output to test it.
Why the motor not start if there has a gas and electric supply?
Possible Faulty wire or even a starter or alternator failure.
Why does your 120 outlet measure 49 volts when you test it with a multimeter?
A reading of 49 volts on a 120v outlet may indicate a poor connection or damaged wiring, causing a voltage drop. It could also be a sign of a faulty ground connection or a wiring issue causing a higher voltage reading. It is important to address this issue promptly to prevent any safety hazards or damage to appliances.
When switch is off of power supply output shown on the multimeter is negative voltage from power supply?
Yes.
What is the most efficient way to determine if your power supply is bad?
test it with a multimeter
What can cause a faulty power supply?
A faulty power supply does not supply any power at all to a computer or supplies incorrect voltages. Most of the time faulty power supplies are not serviceable and require replacement.
What tool can you use to troubleshoot power supply issues measure current resistance or voltage?
multimeter
You are troubleshooting a PC that appears to be dead What are some possible causes of this condition?
A dead PC could have no power going to it. The power cable could be faulty or the circuit breaker on the power supply could be flipped. If these conditions all check out, then it is likely a faulty power supply. Try these solutions. If this doesn't work, let us know ;)
What are the four computer symptoms that indicate a faulty power supply?
Computer not booting
Why won't my Laptop power on?
Either a dead battery - or a faulty power supply.
What are the steps to troubleshoot and repair a faulty dryer terminal block?
To troubleshoot and repair a faulty dryer terminal block, follow these steps: Unplug the dryer and turn off the power supply. Inspect the terminal block for any visible damage or loose connections. Use a multimeter to test the continuity of the terminal block. Replace any damaged or faulty terminal block components. Reconnect the wires securely and test the dryer to ensure it is working properly. If you are unsure about any of these steps, it is recommended to seek the help of a professional technician.
What is the first step to be taken when you receive a report of a faulty power supply?
Voltage settings on the back of the power supply should be checked
