Hi! I'm a complete novice trying to replace a damaged resistor on the circuit board of my coffee grinder. I soldered in a replacement. The person who sold it to me said it was not an exact replacement, but within tolerance. When I applied power, the resistor glowed red hot and started smoking. The questions: Should I have used a resistor with a higher resistance, or a lower one (it was 110 ohms)? What's the likelihood that that momentary application of power damaged other components on the board? |
by MichaelPaitich
September 03, 2017 |
That's why the old one blew. Something else has failed. |
by mikerogerswsm
September 04, 2017 |
Do you know what the power rating of the resistor was from the old to the new? How many Watts? Not only do you need the resistance value to match, you also need to replace it with an equal or higher power rating. |
by cklopotic
September 05, 2017 |
No answers yet. Contribute your answer below!
You must log in or create an account (free!) to answer a question.
Anyone can ask a question.
Did you already search (see above) to see if a similar question has already been answered? If you can't find the answer, you may ask a question.
CircuitLab's Q&A site is a FREE questions and answers forum for electronics and electrical engineering students, hobbyists, and professionals.
We encourage you to use our built-in schematic & simulation software to add more detail to your questions and answers.
Acceptable Questions:
Unacceptable Questions:
Please respect that there are both seasoned experts and total newbies here: please be nice, be constructive, and be specific!
CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.