[TenTec] Model 411 amp (aka Centaur)

[Gary J FollettDukes HiFi]

I would indeed look at the caps again.

I remember now that one of them in mine had a metal bridge between the can and the positive screw terminal of the cap.



Gary
> On Jan 26, 2016, at 9:25 PM, Joe Papworth via TenTec <tentec at contesting.com> wrote:
> 
> Thanks Gary. I eye-balled the caps today. I didn't see anything bad but I was mainly looking for swelling.
> If it's not a tube, I'll take another look at the caps.
> 
> 
> Sent from AOL Mobile Mail
> 
> 
> -----Original Message-----
> From: Gary J FollettDukes HiFi <dukeshifi at comcast.net>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Sent: Tue, Jan 26, 2016 10:17 PM
> Subject: Re: [TenTec] Model 411 amp (aka Centaur)
> 
> 
> I fellow up in northern Minnesota GAVE me one of those with exactly the same problem.
> 
> I found that one of the filter caps was pinched too hard during assembly and must have distorted the capacitor.
> 
> I replaced them all anyway but I sure got a good deal when I was done with it.
> 
> The tubes could do it too, even key up because the plate voltage is still applied to them in standby.
> 
> 73
> 
> Gary
> 
> 
> 
>> On Jan 26, 2016, at 10:25 AM, Al Sirois <<a href='mailto:alsirois at roadrunner.com'>alsirois at roadrunner.com> wrote:
>> 
>> Tuesday noontime, Joe:
>> 
>> I have a Centaur..............keep it covered when not in use.
>> 
>> My Elmer told me to always keep it covered..................dust is the problem.
>> 
>> Even when covered, open it up every two-three years and do a internal cleaning.
>> 
>> N1MHC/alsirois
>> =============
>> 
>> -----Original Message----- From: Joe Papworth via TenTec
>> Sent: Tuesday, January 26, 2016 8:50 AM
>> To: <a href='mailto:tentec at contesting.com'>tentec at contesting.com
>> Cc: <a href='mailto:k8mp at aol.com'>k8mp at aol.com
>> Subject: [TenTec] Model 411 amp (aka Centaur)
>> 
>> Gents,
>> 
>> 
>> Have any of you gone a few rounds with a Centaur amp?
>> I have a one that blows fuses very intermittently. It vaporizes them both, simultaneously, so it's apparently a dead-short somewhere. This happens even in stand-by. (i.e. No key-down)
>> 
>> 
>> Before I tear into it, anyone have any ideas of common failures in these amps?
>> 
>> 
>> Later, Joe, K8MP
>> 
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