[Noisebridge-discuss] Active audio-speaker fix

Torrie Fischer tdfischer at hackerbots.net
Sat Jan 10 06:58:10 UTC 2015


That totally sounds like a thing you should bring to circuit hacking Monday.

On January 9, 2015 5:06:47 PM PST, Dzmitry Lazerka <dlazerka at gmail.com> wrote:
>Hi folks,
>
>One of my Rokit RPG2 speakers broke itself, and I decided to go the
>hard
>way to fix it.
>
>I've bought soldering iron and multimeter, but have no idea what to do.
>Last time I soldered some 15 years ago.
>
>Basically, for some time speaker started to add some "shhh" noise
>regularly. Then, one day it said only "shhh" and sound faded away. Now
>when
>I turn it on, it either goes with loud "shh", or with normal audio for
>a
>second, and then fades away quickly.
>
>Just examining its board didn't reveal any bloated condensers. The
>plate is
>randomly covered with black drops of some rubber kind of glue or
>something.
>And at one place, near small diode+resistor I see the rubber glue
>starts
>bubbling when I turn the speaker on, like it overheats. Probably that's
>the
>problem.
>
>So I was thinking if anyone is interested, I can bring the speakers,
>good
>one and bad one, and hack it together. I'm not really afraid of
>breaking
>them beyond repair, so we can use them on a class or something. I'm not
>really an active member to know if it is of any interest to folks.
>
>-----
>Best regards,
>Dzmitry Lazerka
>
>
>------------------------------------------------------------------------
>
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