Question about Philips HTS3450 System

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HTS3450 - Replaced Capacitors now have sound back but is very low

So I correctly replaced the two faulty 470uF/16v (note on my system they were 16v not 25v) with blue 470uF/35v capacitors I bought from radioshack. There is no more buzzing but just like before i replaced them, there is hardly any sound coming out of the speakers even at max volume. The sound is clear, and even the subwoofer is a kicking a bit, but I can barely hear it without turning everything else in the room off. I even swapped out the amplifier board with a new one and I still have the same problem so I'm thinking there is still something wrong with the power board.

Can anyone help?

Posted by on

  • anon291842 Dec 10, 2008

    I replaced the power board with another, and changed out the capacitors on that one also. It is now working non-stop without any problems whatsoever.

    I will reply to this again if i can fix the other power board. I think I just blew the **** out of it.


  • jutterback May 11, 2010

    are the caps electrolytic or ceramic? do i replace C905 &C906 or is it caps C913 &C914? I can do the work but Wheats thread left me confused with the cap specked at Radio shack. should I use 16V or the 20V for the loss of sound? Thanks for any help!





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The new capacitors have a lot more value than the factory ones. Because of the higher value the amplifier will have to give it all it's got and mostlikely not live for too long (see first comment).
Replace the replaced capacitors with ones of the correct value and your problem is solved. You can use ones with a slightly higher vlaue (20v iso 16v) but it will also produce less louder sound.

Posted on Jan 29, 2009

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