For what it's worth, I had a similar problem frequently in the 1960s. At the
time, I had a home brew  linear amp that had roller inductor. The wheel kept
falling off the wire that it rode on, especially if I wasn't careful and
turned the knob beyond the end of the inductor coil.

It was easy to fix without sight. I just had to open it and lift the little
wheel back, fitting the groove in the wheel  onto the wire. NOTE: be sure
power is off!

73,
Jim, KY2D


-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Steve Forst
Sent: Friday, December 27, 2013 2:59 PM
To: [log in to unmask]
Subject: Re: ATU probs again on 80m

Mike,

I know there could be any number of things going on with an old tuner that
has had several owners. My recollection from a month or 2 ago is that you
had someone peek inside,  and he thought it looked ok and  you buttoned it
back up.

If that is the case, I'd probably try  cleaning the roller and wheel. 
What else have you got to lose?  Having said that, I think you will be happy
with an auto tuner and I've heard lot's of good things about LDG 
tuners.   If money is no object, spring for a new tuner.   Otherwise, 
try giving the other one a little clean up.

73, HNY Steve KW3A


On 12/27/2013 1:12 PM, Mike Ryan wrote:
> Hi all:
>
> The SWR jumps returned again and I can surmise that's the roller inductor.
> The jumps occur when I'm adjusting. 1st clockwise, the SWR lowers, 
> then spikes, then have to go counter to lower.
> I'm thinking it's time to look at a replacement, thinking of the LDG 
> AT-200ProII. Anyone have any experiences and thoughts on this tuner?
> TNX 73:
> Michael DE VO1AX
>
>
>