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p0llinate, Custom Installer
Category: Home Cinema System
Satisfied Customers: 28957
Experience:  Custom home theater installer. Authorized dealer top brands
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I have had a Panasonic SC-BT230EB-K Blue Ray Home Cinema System

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I have had a Panasonic SC-BT230EB-K Blue Ray Home Cinema System for several years.
Only just recently there has been a short loud intermitent thumping type sound coming from the bass woofer speaker. This happens maybe 2,3 or 4 times in a night. What is wrong ?
Would very much appreciate some advice.

Hello there,

I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.

I wonder whether you're ok with continuing to wait for an answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question for you.

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Customer: replied 3 years ago.

I am happy to wait for an answer.

Customer: replied 3 years ago.

I am happy to wait

Customer: replied 3 years ago.

Still no reply yet. Is there a problem ?

Customer: replied 3 years ago.
Relist: Other.
I have waited for more than 2 days and still have not received a reply of any sort.

Hello, I’m Nathan, and I’ll be assisting you today. My livelihood depends on your positive feedback, so your satisfaction is my highest priority.

Sorry to hear you’re having trouble. You likely haven't received an answer because this is a somewhat unusual situation and chances are high that it cannot be resolved, due to a hardware problem.

There are a few possible issues here, but placement and cleaning won't help unfortunately.

This is either a hardware failure in the sub itself (shorted amp, bad power supply, bad crossover circuit, etc) or there is interference from an outside source. Given the frequency, I would expect this to be a motor/heater/compressor type load starting up and causing a blip in the power that interferes with the amp.

About the only thing you can try here is updating the firmware on the player to be sure it isn't sending an errant signal, and plugging it in to a good quality powerline filter (isobar type).

p0llinate, Custom Installer
Satisfied Customers: 28957
Experience: Custom home theater installer. Authorized dealer top brands
p0llinate and 2 other Home Cinema System Specialists are ready to help you
Customer: replied 3 years ago.


As you will probably appreciate,I know nothing about electronics.

I could spend £30 on this regulator thing and it may not solve the problem. What do you think ? I could wait until Saturday until I'm able to talk to my brother who is an electrician.Can I come back to you, if necessary in a few days if I have any more questions ?


You're right Mick, it may do nothing at all.
If nothing else though, I'd consider it a diagnostic evaluation. If it doesn't make any difference, it would isolate this to being a hardware problem with the panasonic system. That is something that would require repairs which aren't going to be practical for a 4 year old system. You'd spend more to fix it than to replace with a whole new unit.
It certainly wouldn't hurt to talk to your brother though, he can go through and check the breakers, make sure a motor doesn't need a new startup capacitor, etc that could be contributing to this. If there was an electrical issue, the conditioner I mentioned should improve or eliminate it though.