On Mon, 9 Nov 2015 11:18:20 -0600, amdx wrote:

That's how I got my MFJ-259B, about 15 years ago, Someone at the local
ham club had a defective one, gave it to a fellow ham to fix, he
returned it saying that he couldn't fix it.
I told the owner, let me have a shot at it, if I can fix it I'll
buy it from you. It was "the usual blown diode problem:" I shocked the
owner when I gave him $60.00 for the repaired unit. I don't think he
expected me to contact him again.
Mikek

Yep. I'm working on an MFJ-259B which might have blown diodes. It's
very easy to do. I'm considering adding a 1M resistor from the center
pin to ground to bleed off any static buildup. Beware of ungrounded
antennas. BTW, I paid $100 for mine. Grumble...

I'm also working with another ham that has an old MFJ-269 with some
very strange problems. I can't conjur a theory except that his has
the same problem as mine with the crappy soldering on the RF PCB. I've
recommended reflowing all the SMT parts around the coax connector.
That should either fix it, or destroy it.

Drivel: I'm trying to find a replacement LCD 1602 display with
backlighting. Plenty on eBay, but all the wrong size. Argh.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558