Question about Philips HTS3450 System

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Buzzind sound When turned on there is a buzzing sound that now lasts up to 30 mins.. Even after waiting for this to go away the unit my still not produce sound. This has been going on for the last 2 months, each month getting worse. I was trying to find how to have this unit replaced but only could find tech support. Ed Nino, email address is

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  • shefferswife May 01, 2009

    I HAD the same problem until I followed your suggestion/directions for correcting the buzzing coming from my 3450. I was able to switch out the caps as directed and now the system sounds better than before. I didn't find any difficulties-gave me a sense of accomplishment for the week-
    Natalie Mom of Two



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There are two 470uF/25V capacitors on the power supply board in the sub-woofer that are the cause of buzzing, crackling and then eventually no sound. Go to Radio Shack and buy two Catalog #272-1030 470uF/35V capacitors and change them out. They are in the middle of the Power Supply PCB and are close to the long flat aluminum heatsink. As far as installation instructions go; you have to have some soldering experience, first. You will also need some type of de-soldering device, be it a solder ****** or solder wick to remove the caps. Make note of the polarity before removing. Then it is just a matter of popping the new ones in (they are slightly larger than the originals so they might not go all the way down flush with the PCB) and soldering them back in. Make sure you do not make any solder shorts or your system will be toast! Your unit will be as good as new and will probably last forever now.

Posted on Jul 26, 2008

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Mine did the same till it died less than 6 months old. I contacted Philips and they requested I box it up and send it to them for replacement or repair. This is the second time a Philips product has failed like this. NEVER AGAIN IN MY HOUSE!!

Posted on Dec 30, 2007


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