[R-390] My 'new' R390

[David Wise]

I preemptively fitted my machine with an inrush current limiter, and a snubber across the switch contacts.

Dave Wise

> On Aug 14, 2025, at 6:37 PM, Norman Ryan via R-390 <r-390 at mailman.qth.net> wrote:
> 
>  Hi, Adam,
> If you can remove the power switch, you can revive it by taking it apart and retrieving the two contacts.  You may note the contacts are pitted and tend to hitch onto one another, causing them to hang.  Simply smooth them with a fine toothed file and all will be well with the switch after assembly and reinstallation.
> Norman
> Adam wrote:
>> I brought up my recently acquired R-390 slowly on a variac. No smoke, and
>> it picks up stations - not quite as good as my R390A, but thats to be
>> expected since its been asleep for 20 years.
>> 
>> Power switch doesn't turn off, I'll need to find one. Local Audio is
>> extremely quiet unless the BFO is turned on, then it's too loud (turned all
>> the way down and it's still booming). Line meter also doesn't function
>> unless the BFO is turned on. With my Kiwa MAP hooked to IF out, it sounds
>> decent.
>> 
>> Where should I start :D
>> 
>> Adam K2AAMl list: http://www.qsl.net/donate.html
> 
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