Why does resistor burn

In case of a burnt resistor, just look at the printed circuit board PCB and look for the value of the resistor printed on it. If not, you may follow the above methods instead. Share with your friends and related persons if you enjoyed reading this article about finding the value of a burnt resistor. Let us know in the comment below if you know an additional method to find the value of burnt resistors. Related Posts.

I have a new idea, good resistor series connect with the burnt resistor and then mesure the resistor value notify then mines - the good resistance value from notified value due to the remaining value is that.

Your email address will not be published. How do you tell if a resistor is burnt out? What happens when a resistor opens? Can I bypass a resistor? What happens when a resistor in parallel is shorted? Does a resistor get hotter or colder when more current passes through it? What happens when series circuit opens?

Do resistors go bad? Previous Article Can I drive with broken exhaust pipe? When a resistor has been overloaded with voltage exceeding its power rating, the resistor will become very hot to touch, darken considerably and possibly even melt or catch on fire. Although a resistor may appear damaged at this point, it can still be functioning.

However, it may be functioning with less resistance than it was originally designed for. At this point, the resistor is unable to resist the flow of current forced through by the excessive voltage and the resistor breaks down.

When a resistor breaks down, current typically flows through the burnt resistor without any resistance and thereby passes unchecked. Other components in the circuit may become damaged from the excess current flowing through. Since , Timothy Boyer has worked as a freelance writer. Boyer has a Ph. How to Test a Blower Resistor. Click the donate button to send a donation of any amount. By applying too high a voltage to a resistor, the resistor will draw too much current. This causes excessive power to be dissipated in the resistor which makes it go up in flames and a cloud of smoke as this video shows.

Can't see the video? If you want to try and repeat this experiment yourself, first read the Warnings and Disclaimer at the bottom of this article. That's a 10 ohm quarter watt resistor and a 12 volt power supply.