[R-390] FL101 Rebuild (R390)

Jordan Arndt Outposter30 at shaw.ca
Sat Oct 22 15:20:19 EDT 2022


I seem to recall reading something that suggested the valueof those caps was 
.068 or thereabouts, and yes, that "filler" gets acidic and corrosive and 
wreaks hell on exposed connections and increasingly leaks AC to ground...

YMMV...73...Jordan VE6ZT

----- Original Message ----- 
From: "Jacques Fortin" <jacques.f at videotron.ca>
To: "'Barry'" <n4buq at knology.net>; "'R-390 Mailing List'" 
<r-390 at mailman.qth.net>
Sent: Saturday, October 22, 2022 11:51 AM
Subject: Re: [R-390] FL101 Rebuild (R390)


Sorry, I meant Y2 capacitors (line to GND use, designed to fail open).
The X2s are designed to fail short....

73, Jacques, VE2JFE in Montreal

-----Message d'origine-----
De : r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> De la
part de Jacques Fortin
Envoyé : 22 octobre 2022 13:44
À : 'Barry' <n4buq at knology.net>; 'R-390 Mailing List'
<r-390 at mailman.qth.net>
Objet : Re: [R-390] FL101 Rebuild (R390)

Hi Barry,

0.1µF (100nF) makes sense.
Be sure to use X2 rated (at 275Vac or more) units for replacements.

73, Jacques, VE2JFE in Montreal

It occurred to me to simply test them!  They're running from about 70nF to
80nF and the inductors check between 1.0mH and 1.1mH I suspect the
capacitors may have been 0.1uF.  Does that sound reasonable?
Thanks,
Barry - N4BUQ

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