2. amps-preamps
  3. 1171190161

Parasound JC-1s Not Working

I just bought a pair of used JC-1s on Audiogon. The amps sounded fine until I was shuting down my preamp. My preamp is a tube linestage. While I was turning off the linestage, I heard some funny noise from both amps. Feeling uncomfortable about the noise, I turned the linestage back on. Surprisingly, the left channel amp did not work. The power was on but no signal.

I don't think it was the fuse. I swapped the external fuses between the two monoblocks. But it still did not work.

I wonder if this ever happens to you, JC-1s owners. Is there a switch or something inside the amp to reset? I flipped all the swithces on the back panel hoping that I could get the signal back. Still no use.

I am going to call Parasound on Monday. I know I won't have warranty since this is used. But before I call, do you folks have any suggestions? Thanks.
audiolui

Showing 1 response by perfectionist

perfectionist
197 posts
 
Did you swap ic's to see if it is indeed an amp issue or preamp issue?
If not, you need to do this first.

There are two 12amp fuses on the mother board, you may have blown one or both. After you remove the top, you need to pull the fuse's and check them with a meter as they are ceramic and you can't tell if they're blown by looking at them.

And as stated, amps should be turned off first with pre's volume at zero and mute on.
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