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

Showing 1 response by boomerbillone

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