[R-390] R-390 update

[Gary Harmon]

First, thanks to all who responded with recommendations.  Thanks to my
friend Don Reeves for the manuals link.
 
PS had diodes installed to replace the 26Z5Ws,  Removed them.  Checked the
four 47 ohm/2w resistors and all 4 were consistently OK.  Two had been
previously replaced.  Found a cold solder joint on one of the tube pins.
Found a broken stand-off that had been previously repaired.  I repaired it
again and the J-B Weld is curing as we speak.  The bridge diode has been
replaced with a later version.  Both 26Z5Ws are bad......no filaments.
Hopefully the attic tube cave will pay off.
 
The flexible wire tube pullers are very cool.
 
More info later.
 
Gary H. Harmon, Jr. - K5JWK
6003 Archwood
San Antonio, TX 78239-1504
210.657.1549h
210.884.6926c