[TenTec] TEN TEC 960 Power Supply Capacitor

[Al Gulseth]

Rick,

Several possibilities:

1) The cap may be breaking down and leaking across the dielectric internally.

But before you condemn it on that basis, check the following:

2) The bridge rectifier could be breaking down and causing an issue, although 
that should normally blow the input fuse.

3) It could be as simple as the connector screws on the cap getting loose/not 
making proper contact. (This is a known issue with some of the Astron linear 
supplies, and I also seem to recall a TT factory mod/service bulletin for the 
960 and/or some of the other power supplies of that family/era.)

73 es GL, Al

On Fri June 10 2016 2:08:06 pm Reeve Family wrote:
> I have a Model 960 Power Supply that I have had since new (28 years old)
> for powering my Corsair II.
>
>
>
> It has never given me any problems however recently it has started to
> generate an over-heating kind of odor even during light use.
>
>
>
> After the most recent occurrence , I shut it down, removed the cover and
> found that the large capacitor can was noticeably warmer than I think it
> should be.
>
>
>
> Has anyone else experienced this? I presume this can should not be getting
> hot in normal operation.
>
>
>
> Is this a common failure at this age in the life of the power supply?
>
>
>
> Does anyone know of an available replacement or equivalent for this
> capacitor?
>
>
>
> Given the number of these power supplies that TEN TEC manufactured, I gotta
> think there is some background on this.
>
>
>
> Suggestions would be appreciated.
>
>
>
>
>
> Thanks,
>
>
>
> Rick VE3ORY
>
>
>
>
>
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