[R-390] R-390 plug-in caps and underside Photo(s) needed

[Jacques Fortin]

Hi Gene,
There is no plug-in filtering caps in a R-390.
There is only two 10µF capacitors there: one before the HV regulator,
another one after.
It will be surprising that any of the two failed, but who knows ?
However, the regulated 180V supply have a hum adjustment...
Maybe it's time to check the power supply (and the 26Z5s, of course).

73s, Jacques, VE2JFE

-----Message d'origine-----
De : R-390 [mailto:r-390-bounces at mailman.qth.net] De la part de GENE
BALINSKI
Envoyé : 15 janvier 2017 14:38
À : R390A <r-390 at mailman.qth.net>
Objet : [R-390] R-390 plug-in caps and underside Photo(s) needed

All,

   My R-390 (not A) has developed a minor case of the hums.  So I thought
that I would start by replacing the 2 plug-in caps in the audio section.   I
am not overly familiar with the 390, and have been unable to locate the
plug-in caps.  Could someone please tell me where I could find them ? 

   Also, there may have been some mods by the previous owner(s).   Could
someone please point me to a web side with some good top and bottom photos
of the 390 (non-A) ?    If not, does anyone have some photos that they could
send ?

73

Gene K1NR
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