Kennedy 9800 - Power-up tips?

Anders Nelson anders.k.nelson at
Thu Apr 23 15:12:55 CDT 2020

Thanks for all the input!

@Chuck: I assume you are talking about a 100W incandescent light bulb, I
like that idea for current-limiting. And I agree a SMPS should cut off the
switch if it detects a short; not sure what kind of supply is in there but
I'll take a look.

@Patrick: There's a stamp on the unit that seems to indicate it was made in
1984 but yeah the eBayer applied power normally before I got it.


On Thu, Apr 23, 2020, 2:21 PM Patrick Finnegan <pat at> wrote:

> On Thu, Apr 23, 2020 at 11:59 AM Anders Nelson via cctalk <
> cctalk at> wrote:
>> Cool, thanks for your take. I found some articles:
>>    -
>>    -
>> Given this unit doesn't have any tubes, I imagine the motor drivers/amps
>> in
>> this thing would simply go to zero output with shorted caps. The PSU might
>> blow the fuse and/or rectifier with a shorted bulk output cap. This unit
>> is
>> very difficult to remove from the rack it's in so I'm trying to avoid
>> preemptive repairs.
> I'd personally say that since it hasn't been off for that long (less than
> 3 years) and since it sounds like you're not interested in taking it apart,
> I'd just plug it back in, and see how that goes.
> As a minimal step, I might disconnect the PSU from the rest of the drive,
> and plug it in like that for a moment, but it's probably best to not run it
> without a load for very long.
> Pat

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