Cary V-12 blowing capacitors

Thanks for the input mastering92! 

I've had the amps for about 20 years and they've been working well. The other mono needed a transformer at one point but that was a isolated incident and was resolved with one repair.

I have been sending pictures as we go along. They seem to be stumped as to what's causing the issue and unfortunately it seems like they are just replacing one part after another hoping that might be it. Of course I'm no repair person and just a novice and that could me just being upset they can't repair it.

At this point Cary has replaced the original Jensen caps with the mundorf caps. They also put in a new big transformer as well as the output transformer. They did the caps the first repair and the transformers the second repair. However after the new transformers were put in is when the caps blew again.

Oldhvymec:

One week ago I installed 36 Golden Lion KT7
7s ( I have a stereo and the two mono block V12s). They're still new so I think they will sound better as we go along, but I am already thinking they may sound better than the rubies. I've tried several other tubes but haven't liked any better than the rubies to date.

I would love to be able to reach out to Denis Had. Do you have a way to reach him?

Also, the first time I sent it out I am not sure if the caps blew or just leaked but Cary told me there was oil all throughout the bottom of the amp. That is when they replaced all three caps with the upgrade to munforfs. The monoblocks have three caps each and the stereo has four. Two days ago I call Cary and purchased 7 caps so I can upgrade my other monoblock and my stereo V12s. That was before this monoblock hit the skids again. I was pretty happy at that point because I thought the problem was solved and I liked the way it sounded with the new upgraded caps.

As far as the most recent meltdown, I haven't even opened the amp up to look in there because I really don't know what I'm doing. So the best I can say at this point is I heard the crackling sound from inside the amp and when I went to detach the plug in the back I saw the puddle of oil on the piece of maple it's sitting on.

Anyone know how to reach Dennis had?

https://linksharing.samsungcloud.com/cv9C1AEPHF8w

https://linksharing.samsungcloud.com/hqXb6tP5HEDl

https://linksharing.samsungcloud.com/harZeWotBE8J

https://linksharing.samsungcloud.com/9hkLk2oJpN82

So although I really don't know what I'm doing I did take the bottom off the amp just to see what it looks like. Kind of a disaster in there. I took some pictures but I'm not sure how to post those here or if that is even something that can happen.

http://https//linksharing.samsungcloud.com/cv9C1AEPHF8w

More

https://linksharing.samsungcloud.com/lsTJNnoKUpBQ

Here is what Cary Audio Had to say today:

"I pulled the Q/C sheets and got with Kellen to go over all the test points. Every test point on the sheet is perfect. We held on to the unit an extra week to make sure everything was in perfect working order. I asked him why he thinks the black UCC would explode and he said the only way for them to explode is if they were wired with reverse polarity. We didn’t need to touch the UCC’s and the voltages at the UCC were well in spec."

 

"Its pure speculation, but adding the new components could have stressed out the older UCC’s. I don’t know for sure, but it’s quite possible. The original power transformer that was in it had a direct short and could have caused the UCC’s to stress."

Does that sounds like a reasonable explanation? 

Also I have been unable to find Dennis Had to ask him. I have been told he is now retired.