Carver m1.0t problem

[rlaliberty]

new to the forums!

So, i just sold a working carver m1.0t on ebay. It was received by the buyer and upon setting it up with polk speakers and a carver c-1 preamp (correctly, as they say) and turning it on, it made a loud buzzing sound and smelled like it was burning. He'll be sending it back but now I want to get it fixed.

Any idea of what could've caused this??? He said the packaging appeared to have sustained no damage.

 

[rlaliberty]

anyone?

 

[Corax]

Unless you open it up and look inside what was burning (at a first glance) nobody could help you I guess.

In case you figured out the/all damaged component(s) I might be able to help you because I'm (very) familiar with the schematic of this amp.
By the way - do you have the inverting or non-inverting M-1.0t?

One thing just came to my mind: In which country did your buyer live in???
If you live in the US with a transformer wired for 115V operation and the buyer lives in a country with 230V I'm sure many parts are fryed in your sweetie.


Besides many semiconductors possibly some (if not most) bulk caps are overstressed with excessiv voltage. Is/Was the primary fuse (on the back, right above the outlet for the power cord ) blown?
Well, it's just a guess - and hopefully (this nightmare) will not come true. Otherwise I guaranty it could be a p.i.t.a. to find all (even partly) damaged components.

Actually there's no way (that I know about) to destroy this amp on purpose - no output short or anything unusual that goes through the input jacks could cause a serious (self) destruction of this amp. It's solid and stable like a rock. This is also due to the fact that this amp acts like an old fashioned tube amp with a low damping factor but with much higher output power

 

[dangus]

There's a member here who knows a lot about the Carver amps. Search m1.0t and you should find his posts. Maybe he could fix it for you.