[R-390] Filter Repair

[quartz55]

I found a nice Ungar 47 1/2W 1000 deg. iron on ebay, got it for about $15.  It sure makes soldering the ends of the filters a breeze.  I do one side at a time, that is so the whole disk does not get loose while soldering.  The filter does get quite warm, but don't know what else can be done.  Everything still measures fine with the ohmeter, haven't put them on the test rig yet.  I'm thinking this iron will also be good enough to unsolder the end caps without being so destructive with the heat and a flame.  I have the iron powered through a standard light controller, so I can crank down the heat, otherwise it gets really hot.

I'm thinking about pulling out the 8 and 16 filters to get the goo out of them although they seem to work, but they do have some resistance to ground from the coils which I'm sure screws up the AGC.  Might as well wire them up all together, it looks like a lot of things have to come out anyhow to re-do the filters.  There's some parts I just can't get to without pulling things apart, I already have the switch rod pulled off.

http://i251.photobucket.com/albums/gg287/DogTi/R390A/solderiron_zps914e0186.jpg

Dave
N3DT