[R-390] SP-600 Recap

[bill kirkland]

Funny that I am replying to the r-390 list about a sp-600...

A couple of things I've found very helpful while desoldering...

If it is a wire lead, or I've cut the component lead, wiggling it while I
Hakko gun sucks the solder
 Helps break the grip of any residual solder.

Sharp, flush cutting side cutters can often get in between the end of a wire
lead and the solder post.
This allows you to pry the end of the lead away from the post. Then you can
unwrap it with needle nose pliers
  -- after solder sucking.

Dental picks can help pry as well.

Using the right wattage soldering iron. Modern "low wattage" ones require
don't have enough humpf to 
 Metal all the solder. Esp true for the SP-600 RF deck as some of the ground
leads are soldered to the
 Metal partitions of the tuning cap array.

I've haven't done this but have thought about grinding down a set of
haemostats so that they can be clipped
 Onto a wire lead to act as a heat sink.

-----Original Message-----
From: Al Parker [mailto:anchor at ec.rr.com] 
Sent: December-20-12 1:59 PM
To: kirklandb at sympatico.ca
Cc: chuck.rippel at cox.net; r-390 at mailman.qth.net
Subject: Re: [R-390] SP-600 Recap

Hi all,
	I held my tongue on Tisha's initial post, I didn't think she was
talking about removing the rotating turret, but figured I'd wait and see.
Chuck, we've never met, but I hope we will sometime, now that you're back in
"circulation".  And, I've never seen your video, tho' 
have heard lots of good about it.
	Bill says it right, for me.
	I have done dozens of SP-600's, but not to the full tear down
everything-polish-"restoration" level, I'd rather call my work
"refurbishment".  Front panels may be stripped & repainted, side plates,
chassis, IF cans, etc. cleaned and maybe buffed, whatever I or the owner
wants.  I have never removed the rotating turret, because I could find no
reason to do so.  Curved hemostats help on the clips on the removable
modules.
	The RF deck is the one thing that requires care and attention, as
Bill stated, particularly setting the band-change to mid-way between bands. 
Some of the 27 BBOD's are tough to remove without collateral damage. 
Hakko is my friend there.
73,

Al, W8UT
www.boatanchors.org
www.hammarlund.info

"There is nothing -- absolutely nothing -- half so much worth doing as
simply messing about in boats"
Ratty, to Mole