Creative SBS 370 Speakers Repaired For No Power
This one is same speaker which was modified earlier by me by installing Bluetooth Kit. Customer sent me complaining no power.
On arrival I checked the adapter it uses 11.4V AC tested using multimeter voltage is OK.
Now for further inspection I opened the unit. I am shocked by seeing the PCB.
Trace pad found ripped off & damaged………..seems someone worked on it. I just phoned to the customer and he admitted that his son has given this speaker to his friend for repair who is studying in final year of electronics .but he is not able to figure out the problem.
So I just discussed with him about the damage done on the PCB. Customer told me to see if it is fixable. After approval I opened database of my pervious articles for wiring reference. Just sharing the PCB Layout on which I have done some Modification earlier by eliminating the external wired remote Volume control with ON/OFF switch Module & installed Bluetooth Kit.
Here damaged ripped off pad is grounding trace
So tested the amplifier with proper grounding it starts work, earlier at the time of modification I connected the LED in place of the switch
which is also not working so I cut the heat shrink tube for inspection and I found Led resistor broken from the wire connected to LED.
Installed new 1.5K resistor ………. & powered the unit and green LED Light up & speakers are back to the life.
This article was prepared for you by Yogesh Panchal who works as a Computer Hardware Engineer in Mumbai India.
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Note: You can check his previous repair articles on Multimeter Repaired For Unstable Reading Problem
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Albert van Bemmelen
April 16, 2022 at 7:35 pm
Luckily you were fully capable in fixing such a more challenging task as an experienced repair engineer.
Yogesh Panchal
April 19, 2022 at 6:24 pm
Albert,
for microscopic trace repair HD Microscope camera is must & needs precision soldering iron also.in this case traces are easily visible so that you can get the idea of path & here my plus point was i had the screen shot of the same PCB for reference.
Parasuraman Subramanian
April 16, 2022 at 8:45 pm
A tampered set is always a cause to trip our temper! But you handled it coolly and resolved the issue! Excellent!
Yogesh Panchal
April 19, 2022 at 6:32 pm
Sir,
on some PCB copper traces are very thin & it will easily peel off on heating.
i just spoiled one AC Remote while repairing i planed to replace the 80 Pin square SMD IC using Hot air workstation but microscopic traces were come off with the IC even it is hard to clean the IC Pins because manufacturer used lead free solder.
Anwar Shiekh
April 16, 2022 at 11:55 pm
I would have little patience for having to deal with damage from another person.
Yogesh Panchal
April 19, 2022 at 6:37 pm
Shiekh saab,
Giving try sometime works.
Robert Calk Jr.
April 17, 2022 at 11:26 am
Nice work, Yogesh.
Yogesh Panchal
April 19, 2022 at 6:38 pm
Thank you! Sir,
ANIL KUMAR V K
April 17, 2022 at 9:52 pm
Good job
Yogesh Panchal
April 19, 2022 at 6:39 pm
Thanks! Anil Kumar.
Waleed Rishmawi
April 18, 2022 at 3:50 pm
technicians with no experience cause this kind of issues. when I was young and has not experience whatsoever in the repair field, I used to destroy things instead of fixing and kept insisting that I want to repair stuff. destroying stuff is ok but not learning from mistakes that is my main issue when it comes to repair. have a blessed day and thanks for sharing
Yogesh Panchal
April 19, 2022 at 6:40 pm
Waleed,
That is the process of learning................
thanks!
Opheas
June 3, 2022 at 3:47 am
Good job sir. I have creative speakers A220 which i trying to fix. Can you please help me with the values of the 2 capacitors which are in one of the small speakers together with the potentiometer
madan
November 14, 2022 at 1:14 am
hello sir,
i have a creative sbs 2.1 370 subwoofer it wasn't working so when i opened the the back cover and tested it found current supply on all the components of the circuit board including the heat sink can u please help me figure out this issue