How To Test Electronic Components On A Circuit Board Pdf

October 30, 2023 Post a Comment

How to test electronic components on a circuit board pdf

Check the Power Module If the components look fine, you'll need to power up the circuit board. Measure the voltage of the power rails with the multimeter. Both the input and output of the voltage regulator need to show the expected values. Check the fuse if the input voltage measured at the voltage regulator is 0V.

How do you test circuit board components with a multimeter?

To test circuit board properly, touch the multimeter probes to the test points present on the board. Make sure while playing out this step you have your hands on the plastic portion of the probes. You can then go on to check either the voltage or resistance.

What are the testing criteria for electronics components?

Electronic components must be tested before they make their way into a finished product. ... Some typical tests include:

Burn-in testing (thermal reliability and lifetime test)
Vibration testing.
Shock testing (mechanical, thermal, or electrical)
Cycled tests.
Electrical stress testing.
Any combination of the above areas.

How do you troubleshoot electronic components?

Do You Recognize the 8 Techniques to Troubleshoot Your Electronics Circuit?

Confirm the Problem in the Circuit.
Consider Visual Inspection First. ...
Select Troubleshooting Tools. ...
Power up the Circuit. ...
Check the Power Supply Block. ...
Check the Individual Components. ...
Check the Main Controller. ...
Check the Loads by Metered Power Supply.

How do you know which components are faulty on a circuit board?

Look for blackened components or melted or broken parts of the printed circuit traces, the little metal lines that connect components together on both sides of the board. Components can burn out and when they do they can smoke. Also look for swollen or discolored components.

How do you know which components are bad on a circuit board?

3 Examine components on the board for signs of physical damage. You may see burn marks, cracks, broken wires, bulges or crushed parts. Assume that any parts that appear damaged are faulty.

Can you test transistors on board?

Most digital-type multi-meters are equipped with a diode test function that can be used to test a transistor. If the transistor is already connected to a circuit board, it will have to be removed from the board prior to being tested. An electronic transistor may be used within a circuit as an amplifier or as a switch.

What is the most common instrument used in testing electronic components?

There are many different forms of test instrument that can be used to test electronic equipment. The digital multimeter is one of the most common, but there are many other items of test equipment including the oscilloscope, signal generator, spectrum analyzer, logic analyzer and many more.

How do you test a capacitor on a circuit board?

How to measure capacitance

Use your digital multimeter (DMM) to ensure all power to the circuit is OFF.
Visually inspect the capacitor. ...
Turn the dial to the Capacitance Measurement mode. ...
For a correct measurement, the capacitor will need to be removed from the circuit. ...
Connect the test leads to the capacitor terminals.

What are the steps in component testing?

Component Testing Process:

Requirement Analysis: User requirement related to each component is observed.
Test Planning: Test is planned according to the analysis of the requirements of the user.
Test Specification:
Test Execution: ...
Test Recording: ...
Test Verification: ...
Completion:

What are the 4 basic categories of electronic components?

Resistors: Components used to resist current. Switches: Components that may be made to either conduct (closed) or not (open). Capacitors: Components that store electrical charge in an electrical field. Magnetic or Inductive Components: These are Electrical components that use magnetism.

What are the component testing techniques?

There are many different types of testing, but for this article we will stick to the core five components of testing:

1) Unit Tests.
2) Integration/System Tests. ...
3) Functional Tests. ...
4) Regression Tests. ...
5) Acceptance Tests.

What are the 6 steps of troubleshooting?

Step One: Define the Problem. Step One is about diagnosing the problem – the context, background and symptoms of the issue.
Step Two: Determine the Root Cause(s) of.
Step Three: Develop Alternative Solutions. ...
Step Four: Select a Solution. ...
Step Five: Implement the Solution. ...
Step Six: Evaluate the Outcome.

What are the five steps in diagnosing an electrical problem?

Step 1 - Observe. Most faults provide obvious clues as to their cause.
Step 2 - Define Problem Area. ...
Step 3 - Identify Possible Causes. ...
Step 4 - Determine Most Probable Cause. ...
Step 5 - Test and Repair. ...
Follow up.

What are two common problems when troubleshooting a circuit board?

Electromagnetic compatibility (EMC) and electromagnetic interference (EMI) are two issues that are common on PCBs.

How do you check if an electrical component is working?

How to Test Electric Components with a Multimeter

Continuity tests measure if electricity can flow through the part.
Resistance tests how much current is lost as electricity flows through a component or circuit. ...
The third common test is for voltage, or the force of the electric pressure.

How do you test a circuit board?

To test a circuit board for a short circuit, you need to check the resistance between different points in the circuit. If visual inspection doesn't reveal any clues as to the location or cause of the short circuit, grab a multimeter and try to track down the physical location on the printed circuit board.

What are common faults on main board?

Common symptoms of motherboard issues are similar to CPU problems: The system does not display anything; an error code appears; one or more beeps occur; the system locks; the system reboots; a Windows BSOD (blue screen of death) appears; or one or more of the ports, expansion slots, or memory modules fails.

How do you trace a bad circuit?

The first step in finding a short circuit is to look for physical signs. This may include visible burns or melted metal on wires, burning smells, or flickering lights. Once you've identified a potential short, use your multimeter to confirm the voltage by placing it on its resistance or continuity setting.

How do you know if a resistor is bad on a circuit board?

If the resistor is fine, the multimeter will show its value in Ω, kΩ, or MΩ. However, if the resistor is bad or damaged, the multimeter may display 0 or 1. If the value 0 is displayed, the resistor is damaged, and the current can't pass through.