Creative SBS 240 Speakers
A speaker that had previously been repaired came back for further repairs. I informed the customer that the PCB was already damaged, so it might not be possible to fix it this time. However, they requested that I repair it because the speaker was a gift and held sentimental value for them.
The customer said that the speaker is working properly, but there is also a crackling sound coming from it.
He forgot to bring the adapter, and I didn’t have a 19V adapter with that specific pin type. So, I asked him to bring it over so I could check for the problem. He told me he had some nearby work to attend to and would return with the adapter shortly, then left. While waiting for him to come back, I decided to open the device and check for any visible faults—such as loose wires, dry solder joints, or a defective capacitor.
So I opened the speaker for inspection.
Looks Clean from Component side. But solder side is very bad PCB is degraded
I checked the components one by one to see if any were loose and inspected for dry solder joints, but everything seemed fine., having doubt on capacitors but I held off, thinking I’d wait for the adapter to arrive before checking; I didn’t see any physical damage.
And in the meantime, the customer came back with the adapter. I inserted the adapter pin into the speaker and noticed it wasn’t plugging in properly; I think I found the culprit.
I held the adapter pin in place while playing a song on the speaker and discovered the exact problem described by the customer: when the pin was wiggled, the speaker produced disturbances and crackling noises.
Upon unplugging the device and examining the socket from the inside, I noticed that the metal leaf plate used for grounding had straightened out instead of remaining bent to grip the pin.
Metal Leaf Pin is Marked with “B” in the following diagram.
Due to a very fine gap, a loose connection forms between the socket and the pin, causing a crackling sound when the pin moves due to vibration. So for replacement I taken one new DC socket from my storage box & replaced On the board.
Connected adapter for testing it works fine without any disturbance noise.
Amplifier based on TEA2025B sound IC total output is 3W, sound great in PC. Assembled everything & speakers are ready to pick up.
I don’t understand why Creative discontinued some of their good products Like SBS240 & SBS20 that ran on power adapters—switching to USB power doesn’t deliver the same sound quality that this range used to offer.
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 Euronics Automatic Soap Dispenser Repair – Part 3
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