2. amps-preamps
  3. 153960-1009

Smoke on my power amp

I was listening the music with the right speaker wire detached to listen to the left speaker alone. The speaker wire was still attached at the amp side. My preamp does not have the balance knob.
After 20 secs or so, there was a smoke on my power amp.
I quickly turn off the amp.
Once smoke comes, would it be safe to turn it on again? I wonder whether it is permanently damaged.
Is it not safe to listen to the music with the speaker wire detached from one speaker but still attached on the amp side?
My amp is Plinius SA 102.
Any comment?
thx


128x128ihcho
kalali's avatar
kalali
1,977 posts
 
I think you’d be hard pressed to find anything new less than $5K or even more to replace the SA-102. Selling it as is would be a big loss (to you) or perhaps a great gain for someone else who can fix it and enjoy it. Your money your choice.
Where are you located?
ihcho's avatar
ihcho OP
612 posts
 
Two hours north of Detroit.
If the transistor can be easily replaced, I might try by myself.
Thanks for your comments.
rocknss
130 posts
 
If you can get the parts and want to try it yourself.

After detaching from the heat sink, first cut the leads near the body of the transistor and then desolder/remove one at a time. Use some solder wick to clear the through-holes. 

Cut the new device leads to the same length as those removed and form similar, then solder in place.

Looks real easy to do right from the top.
riley804
1,224 posts
 
If the transistor can be easily replaced, I might try by myself.

Here comes another thread.

just spend the money and let those that know how to fix it do it and then you know it’s done right.
itsjustme
682 posts
 
in the specific case of tube amps having output transformers
Fair enough!  (But we were talking SS...)  Also that is more an issue of disconnecting while playing, rather than "turn on with no load" - which are quite different.
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