[R-390] AGC Problem - Diagnosis Help Appreciated

[Neill, William J.]

Couldn't the resultant oil from the CV-157 cap be used to simmer Kielbassa to a 
french-fried consistency?  Should give it a rich, crisp taste and greatly enhance 
functioning of the lower digestive tract.

Bill Neill
Conroe, Texas


---- Original message ----
>Date: Wed, 19 Feb 2014 13:25:31 -0500
>From: <Jbrannig at verizon.net>  
>Subject: Re: [R-390] AGC Problem - Diagnosis Help Appreciated  
>To: "Craig Heaton" <hamfish at efn.org>, "'David Wise'" 
<David_Wise at Phoenix.com>, <r-390 at mailman.qth.net>
>
>Cut open an oil cap in a CV-591 and put a new cap in it....
>Never thought to help out the neighbors lawn....
>
>Jim
>
>-----Original Message----- 
>From: Craig Heaton
>Sent: Wednesday, February 19, 2014 1:05 PM
>To: 'David Wise' ; r-390 at mailman.qth.net
>Subject: Re: [R-390] AGC Problem - Diagnosis Help Appreciated
>
>Tongue in Cheek:
>
>It rains a few days here in Orygun and an old man needs something to do
>besides counting raindrops. With that said, there are two main options.
>Disconnect the old C551, leave it in place and mount the new one under the
>chassis.
>
>Or..........for devilment; The old oil filled cap has other uses. Take a
>Dremil tool with a thin cutoff wheel and go around the inner edge of the
>bottom side of the cap (next to the solder joint). The oil had other
>medicinal uses and can be used to grow greener grass in the neighbor's lawn
>that owns a plasma TV. Moving on.....with the inners exposed, take a wood
>screw and twist it into the foil & paper wrapping. Grab the screw with a
>pair of pliers and yank! Remove the cardboard insulation along the inside
>walls and clean the case with your favorite solvent.
>
>Install new cap with heat shrink on the leads. Tack the bottom back on at
>the corners with solder.
>
>Beats counting rain drops.
>
>Craig,
>
>-----Original Message-----
>From: r-390-bounces at mailman.qth.net [mailto:r-390-
bounces at mailman.qth.net]
>On Behalf Of David Wise
>Sent: Wednesday, February 19, 2014 9:38 AM
>To: r-390 at mailman.qth.net
>Subject: Re: [R-390] AGC Problem - Diagnosis Help Appreciated
>
>Just replace it.  It's bad.  It's always bad.  If I saw a good original
>C551, I'd faint.
>
>To expand on what Craig said, if you simply measured resistance with an
>ohmmeter, the figure you got is wildly optimistic, because leakage increases
>faster than proportionally as applied voltage increases.  50Meg is
>incontrovertible evidence of failure.  Once it charges, a good cap will read
>open.
>
>The only difference between SLOW and MEDIUM is the voltage applied to C551.
>(Polarity too, but that shouldn't matter here.)  If it sort of works on
>MEDIUM but fails on SLOW, C551 is THE suspect.
>
>Dave Wise
>SWL in Hillsboro Oregon
>
>-----Original Message-----
>From: r-390-bounces at mailman.qth.net [mailto:r-390-
bounces at mailman.qth.net]
>On Behalf Of Craig Heaton
>Sent: Tuesday, February 18, 2014 7:50 PM
>To: 'AE4CW'; r-390 at mailman.qth.net
>Subject: Re: [R-390] AGC Problem - Diagnosis Help Appreciated
>
>Chuck,
>
>With my limited listening to SSB with a R-390/A, MGC adjusted to somewhere
>around 6 or 7 and Local gain around 4 or so seems best. AGC and SSB never
>seems to cut the mustard, but I don't use it for SSB. YMMV
>
>On Slow the carrier meter goes to 100+ and AGC is lost. C55I would be my
>target, did you check insulation resistance at rated voltage? Need a cap
>checker/analyzer. Both of my receivers had faulty C551's. Value checked good
>on the cap analyzer, insulation resistance was terrible. I've used a NTE
>MLR205K630 with good results.
>
>Craig,
>
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