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Cary V-12 blowing capacitors

Hi,

I have a pair of Cary V12 monoblocks one of which is blowing capacitors. It was initially sent in to cary as it was the 3 Amp fuses. They initially replace the capacitors and sent it back. It worked briefly and then started blowing fuses again. It went back to Carrie and this time they replaced both transformers. It did work for a couple of weeks but yesterday when I turn it on and was in the standby mode I heard a crackling noise from inside the amp and 3 amp fuse blew again. There was a large puddle of oil in the back of the amp which is from the capacitor. So it seems like something is still not repaired correctly which is causing the capacitors to blow which maybe is why the fuses are blowing. With it being to cary twice and they are not really sure what's happening has anyone else had this issue?
whataboutbob1
whataboutbob1 OP
34 posts
 
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?
whataboutbob1 OP
34 posts
 
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.
arcticdeth's avatar
arcticdeth
1,572 posts
 
Cary needs a talking too. That’s friggin gross. How old is carry? How old are the capacitors?

   Loved the title of your post!,

put a smile on my face.

  Thanks, needed it!

🍻
Post removed 
boomerbillone
350 posts
 
Hello "whataboutbob 1".  Do you have a "multiple voltage" version of the amp?  Is there a switch or dial on the back/bottom of the amp that lets the used select what the input voltage from the power lines is? Some products designed for International Sale have a switch so that the user in Japan or Europe can use the same product. It will have something like "100/110/120/220 volts" printed near the switch/knob/selector. Japan uses 100 volt mains and other parts of the world use 220 volt power lines. In the USA, our power is somewhere in the 110 - 120 range. At my California home, it is often 125 volts. If the input voltage selector got accidentally switched to 100, and the amp was plugged into USA power, the problem you describe would surely happen. It is worth a check. Has the amp been modified or upgraded recently? A well meaning technician might have accidently moved a switch or rewired the power transformer primary. Wishing you the best possible outcome. Boomer Bill
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