Cary CAD 300 SEI dropping out

Posted by badteacher (A) on August 20, 2016 at 11:03:55

My Cary is a little over three years old (just went off warranty in the spring) and I am experiencing audio dropouts in both channels. It occurs while playing all sources. I checked the bias and found it to be spot on so I swapped out the Sophia Output tubes first and put back in the original low hour tubes from Cary and the problem persisted. I then swapped out the three 6SN7 tubes and the problem persisted.

The dropout occurs at random times during a listening session. It sounds like a gradually fade out to near silence and then the sound gradually ramps back up to the original sound level. There are no clicks, pops, or static at any time. I have also noted the Power and Output transformers seem to be running cooler to the touch than I previously recall.

Any ideas out there? Could it be the power supply caps or coupling caps? Could my low hour Cary Tubes somehow be suspect; both channels drop out at the same time. If it is something simple I would first try a local shop but if the consensus is this could be more involved I would bite the bullet and ship it back to Cary and perhaps have things upgraded in the process.

Thanks,

John

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Topic - Cary CAD 300 SEI dropping out - badteacher 11:03:55 08/20/16 (21)

RE: Cary CAD 300 SEI dropping out - badteacher 16:21:51 09/11/16 (0)

RE: Cary CAD 300 SEI dropping out - daleda 10:58:56 08/22/16 (1)

So you unloaded a problem piece to some one else - airtime 08:37:19 08/25/16 (0)

RE: Cary CAD 300 SEI dropping out - fredtr 07:31:02 08/21/16 (1)

RE: Cary CAD 300 SEI dropping out - airtime 07:48:44 08/21/16 (0)

RE: Cary CAD 300 SEI dropping out - fredtr 05:07:27 08/21/16 (0)

RE: Cary CAD 300 SEI dropping out - airtime 11:08:47 08/20/16 (14)

RE: Cary CAD 300 SEI dropping out - badteacher 11:19:56 08/20/16 (13)

If the heaters are still lit.... - Cougar 11:52:56 08/20/16 (12)

I'd call Cary - G Squared 15:00:16 08/20/16 (1)

Agreed - Gary 06:43:45 08/21/16 (0)

RE: If the heaters are still lit.... - airtime 12:54:21 08/20/16 (9)

I totally agree. - Cougar 14:58:56 08/20/16 (8)

RE: I totally agree. - badteacher 15:22:44 08/20/16 (7)

RE: I totally agree. - The Dill 06:10:04 08/21/16 (6)

RE: I totally agree. - badteacher 12:14:13 08/21/16 (1)

RE: I totally agree. - The Dill 12:28:27 08/21/16 (0)

Thanks for the Local lead - badteacher 11:48:56 08/21/16 (3)

Let us know what the results are! - Cougar 12:21:14 08/21/16 (2)

RE: Let us know what the results are! - badteacher 17:14:34 08/22/16 (0)

Me too - airtime 07:25:47 08/22/16 (0)

Cary CAD 300 SEI dropping out

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