Cool, thanks for your take. I found some articles: - http://www.angelfire.com/electronic/funwithtubes/steps_to_first_power_on.html - http://www.angelfire.com/electronic/funwithtubes/Restore_cap.html
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'm going to pick up a variac on Amazon when I finish up some other things: https://www.amazon.com/dp/B076Y2XHRS/ref=twister_B07G5BHXYV Happy to hear any constructive criticism. -- Anders Nelson +1 (517) 775-6129 www.erogear.com On Thu, Apr 23, 2020 at 12:37 AM "Grif" w. keith griffith via cctalk < [email protected]> wrote: > > 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 > > > > www.erogear.com > > >
