On 14/11/2015 8:43 AM, Rick Casey wrote:
I am not an electronics guy, but need to ask for some opinions from
people who are...and hopefully help me find the right solution to fix
my amp.

I have a Roland Cube, which I basically use as an amplifier to play
music through, or my guitar. The other night I had my laptop plugged
into it, playing some recorded music. I had the music coming out of
the laptop turned off, the amp turned off, and plugged into the
laptop (via a mini-plug wire connector).

I had accidently touched the volume control on my laptop, however,
and didn't see that I set the volume at nearly max output, and
started the music playing. There was no sound yet, though, since the
amp was off; so when I flipped the power switch on the amp, the sound
came blasting out in a huge way, though it was garbled and static
since it was overloading the system.

Pulling the plug immediately, when I later tried to play music
through the amp again at proper volume, nothing comes out but a
steady hum. I hear the same hum if there not even anything connected
and playing through it.

So my question is: what damage did I likely do? Can it be fixed? Is
there any other testing I can do to determine what was damaged?

**Unknown.
Probably.
Not really.

--
Trevor Wilson
www.rageaudio.com.au

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