An Active Speaker That Powers On But Without Sound Repaired. Meirenda K12-2
A guy who lives nearby brought his speaker to my shop and wanted to get his speaker fixed. He said the speaker powers on but there is no sound coming out.
Four screws off and I was able to see the inside of this speaker.
Lots of wires inside so taking a photo of them is not a bad idea to keep in mind what wire goes where.
I spotted where the speaker cables go to and right away I saw the fault.
I am sure you have spotted already the hole on that tiny amp IC with the part number of B5K18A.
I do not have this IC available in my shop but I found the equivalent part for it which was HT8693SP and that I have plenty of in my shop.
Click the above photo to visit HT8693 IC Datasheet
I applied low melt solder to the pins of the IC and carefully I applied some heat to it and it was off in no time.
I soldered the replacement part there and put everything back together (with the help of the photo).
The sound was restored in this active speaker and two things left to do, put the screws back and call the customer for pick up.
Mission Accomplished.
This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.
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Note: You can check his previous repair articles in the link below:
https://jestineyong.com/a-ps4-controller-with-issues-cleaned-and-maintained/
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Parasuraman S
March 27, 2021 at 2:02 pm
Expertise in handling heavy other devices, has made troubleshooting very simple job for you.
Waleed Rishmawi
March 29, 2021 at 7:51 pm
Parasuraman: thanks man. have a blessed day
Waleed Rishmawi
March 29, 2021 at 7:59 pm
Greetings: someone asked you this question: From Rodolfo.
PARASURAMAN S. I have a question for you if you let me, thanks: In your oppinion and experience do you believe that electronics componentes as IC'S microprocessors including the last technology are made to have a long or short operating life, or no??? I understand there a lot of fail factors, can you tell me your experience about this? thanks my best regards.rasuraman: someone by the name of
Albert van Bemmelen
March 27, 2021 at 6:06 pm
Thanks for the datasheet and the interesting repair! That you already found the right equivalent DIL8 chip plenty ready in your store is a small miracle. You must have a lot of parts in stock. Searching for this BK5K18 10 Watt audio amplifier indeed gives the HT8693 as equivalent- click here:
Never new this chip existed. Often the DIL8 stereo types like the TDA 7050 or the TDA2822 are only 1 Watt. And the famous LM386 mono amplifier is also just 125 mW in output power.
Waleed Rishmawi
March 29, 2021 at 7:52 pm
Albert: you are most welcome. yes, I try to stack up on parts as much as I can but even with that I end up lacking on some. have a blessed day
Anwar Y Shiekh
March 27, 2021 at 10:42 pm
It is sad that there are no longer many repair shops around; must be hard to make a living from such work.
Waleed Rishmawi
March 29, 2021 at 7:54 pm
Anwar: yes not many repair shops left due to the fact they do not want to advance in their repair field. usually I have a lot of repair jobs in the shop and my income is good. have a good day
RODOLFO V. GOMEZ G.
March 28, 2021 at 11:15 am
Hello PARASURAMAN S. I have a question for you if you let me, thanks: In your oppinion and experience do you believe that electronics componentes as IC'S microprocessors including the last technology are made to have a long or short operating life, or no??? I understand there a lot of fail factors, can you tell me your experience about this? thanks my best regards.
Waleed Rishmawi
March 29, 2021 at 8:00 pm
Rodolfo: I cut and past your question for Parasuraman. so he will answer your question since it was addressed to him. have a good day
Yogesh Panchal
March 31, 2021 at 4:49 pm
waleed,
Arranging this types of parts is also a big challenge.I left so many repair jobs because of unavailability of spares and if available it was not economical as compare to price of the equipment.
Humberto
April 1, 2021 at 11:49 pm
Great repair, and thanks for the DataSheet.