Kennedy 9800 - Power-up tips?

"Grif" w. keith griffith kgriffit at
Wed Apr 22 19:35:47 CDT 2020

At least in radio repair of old equipment,,,, old electrolytic caps 
cause all sorts of issues. Most of the guys doing restoration do a total 
remove/replace on them.  In my opinion,,, I think that's a little 
extreme,,, but then having one fail after all the other work is done is 
also a PITA.

On 4/20/20 11:15 AM, Anders Nelson via cctalk wrote:
> Hi friends,
> Now that I have enough hobby time having quit my job two weeks before the
> apocalypse, I'm interested in poking at my Kennedy 9800 tape controller
> project.
> I bought the tape unit in Q3 2017 and the seller said they had powered it
> up and nothing seemed awry. I have not powered it up and reading about old
> electrolytic cap issues I'm curious if I should do anything beyond replace
> any obviously leaking/ruptured capacitors.
> IIRC people have used a variac to gradually bring the power supply up to
> operating voltage and somewhat refresh the capacitors - is this a thing? Is
> this advisable?
> Any help is appreciated!
> --
> Anders Nelson

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