Try a different jumper between the transceiver and the MFJ.  And 
check the antenna coax for shorts and opens.  With an almost infinite 
choice of inductance and capacity it seems likely that something 
should come in to resonaance if all of the cables have integrity.
Pat, K9JAUAt 07:05 PM 6/25/2012, you wrote:
>Hi all,
>Well, $176.90, down the drain for the mfj949e.
>I plug in the antenna into coax 1, and the jumper from the Kenwood 570, =
>and the other end of the jumper to the transmit port, it's also an so239 =
>connecter, and folks, I disabled the tuner in the 570, and adjusted for =
>loudest noise, and there is no loudest noise!
>So, it's a bad tuner.
>Then, we have the kenwood kt1, autotuner, and so I tryed that. I plugged =
>the antenna in to that tuner, and I pluged in the power cable that went =
>from the kt1 to the radio.
>Then, I press the tune button on the kt1, and no tuning noise. However, =
>I then reenabled the autotuner in the radio, and pressed the tune button =
>on the radio, and the kt1 tuner made a noise, like it's tuning it, but =
>of course, we know that since the 570 tuner is now enabled, the kt1 is =
>not gonna tune it.
>I am so tired, just absolutely sick and tired, this is hell for me.
>Also, Bob, k8lr, I'll call ya tomorrow, or, you can call me, best time =
>is in the afternoon, between 1240 till 3, and anytime after 4.
>I'm looking forward to getting your help with echo link.
>I just wonder sometimes if I'm never ment to get on hf again.
>I hope not, I just got the extra and I can't use it now.
>So much for motivation to get the extra, that was the motivation, just =
>to use those extra frequencies.
>Trippy, ac8s