I am looking at two similar old boomboxes with the same problem: they work fine on line power but stop working when I pull the plug out of the wall. Can anyone tell me what kind of device they use to automatically switch to battery power, and is it a discrete device that I can repair or replace? And am I asking this question in the correct forum, or is there one oriented to this kind of issue? |
by SteveWise
April 23, 2019 |
you may need to pull off the power line from boomboxes. |
by wangwg88
April 23, 2019 |
my old boombox had a simple switch within power cord receptacle that opened the circuit connecting the batteries |
by DeanKennedy
May 08, 2019 |
Thank you, I discovered that one of the boomboxes has such a switch, and when I jiggled it it made contact and the boombox started working on the batteries. Unfortunately, the other one doesn't have such a switch. It apparently uses a relay or circuit activated by the line voltage. |
by SteveWise
May 08, 2019 |
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.