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syklab 29th April 2012 07:15 AM

Blown fuse on 3875
After listening to the 3875 mounted on a cutting board for a few months, I started to move it to a small aluminium case.

When I I turn it on the first time again I heard a loud hum from one of the speaker, I turn it off right away to figure out what went wrong. The fuse was blown, finally I noticed that one of the V- and G- from the left channel were reversed so I corrected the error but could find another 5A250V replacement fuse, so fruatrated and need to go buy some fuse and try again tomorrow. Not sure if some other parts got damaged or not.

syklab 29th April 2012 02:21 PM

After replacing the fuse everything are working, the LM3875 is dead quiet, no hum with full volume. Now I can move on to another project.


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