Repair Of Bluetooth Player
This bluetooth player was brought by a friend with complaint of not powering ON and not charging
It’s one of those cheap player, on checking it, it was dead,thinking it could be battery problem,but alas it wasn’t. On opening it by removing case cover, remove battery for voltage test, voltage was o.k, replaced battery back and connected charging usb to charging slot, charging red led didn’t light, check for 5 voltage at the +&- input pins of usb…no voltage. Then it done on me, there is problem on board: a kind of shorted circuit.
So I decided to check all components on board one after the other,looking for a short.
Alas I got the component that was shorted, it was a tiny smd cap connected to main chip, then I did desolder chip off the board.
Then connected all connectors’ pins back,including battery and switch ON….Wow I heard sound of ‘Bluetooth mode’ with the lcd screen segments light lit bright red, also try the charging circuit which function well too.
Play some music from sd card and also from phone on Bluetooth mode….so far so good. This is the finished repair work.
This article was prepared for you by Imoudu Onwumah from Nigeria. He is 62 years old and has just 3 years experience in electronics repairs. I started career in hotel industry as a chef, but then I was doing repairs only in electrical repairs as a hobbyist. In 2018, I decided to learn about electronics which through Jestine’s electronics e-books and holding my hand, am an electronics techie today.
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Note: You can read his previous article on Microwave Oven Back To Life
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Parasuraman S
October 25, 2025 at 5:23 pm
Amazing! Your ability to troubleshoot problems has leaped ahead and you have m=become a master! Thanks for sharing!
albert van bemmelen
October 25, 2025 at 5:50 pm
Good job Imoudu. I guess that they often use smd capacitors that are of inferioror quality or maybe not even for the right working voltage in a circuit why they fail in time.
Mark J
October 26, 2025 at 2:59 am
Imoudu well done on the repair.
Imoudu.O
October 26, 2025 at 3:44 am
Parasuraman.S
Haa...,Well am still learning from you and other guys on this platform
Thanks to you for imbibing your experience on me and others.
Yogesh Panchal
October 26, 2025 at 11:53 pm
Good Work! Imoudu.O
Many people put this work aside thinking it is a complicated circuit, but the correct approach is to first check all the small components for shorting.
Angel Delis
October 31, 2025 at 7:24 pm
Good work, I think is programmed obsolescence.