2. amps-preamps
  3. 149214-112130

PRIMA LUNA DIALOGUE PREMIUM - 20 minutes and then loud pop and buzzing in 1 channel

Hopefully someone can help.

Amp is virtually new. The amp will operate wonderfully for 20 minutes and then a loud pop , and then buzzing from the right channel. I shut down the amp and then it repeats.  I switched some tubes and it is still there.  I switched the cables and know for sure it is only one channel, the right one. The buzzing does not increase with the volume increased. . 
It is the amp and not the Prima luna preamp.  Cables and connections are fine.   Pushing Focal Kanta No2's . 

Any help would be very much appreciated. I'd rather not send a 68 pound piece of equipment through the mail. 

Thanks lot - Craig 

vespacraig1966

Showing 2 responses by tablejockey

tablejockey
4,012 posts
 
"Sell it now. Seems everyone else is. You see how many are for sale?"

Listings on Agon,AA,USAudio-ZERO

Perhaps this poster is being facetious? I've used PL products for years without problems,along with many others
Hopefully, it is something simple. Doesn't look like the OP has completely eliminated a bad tube.
tablejockey
4,012 posts
 
vespacraig65-

Since you've switched EVERY tube, then you may have eliminated the possiblilty

Call Upscale to get a referral for a shop to repair it
The suggestion of the switch on the right side will have nothing to do the problem. The amp will work fine in either position.


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