[ICOM] 756PROIII infinite SWR, very QRP

[Phil Krichbaum]

Larry,
    It seems to have fixed itself for now. I assume you mean just turn 
off the tuner when you say remover from circuit which I did. 756 tuner 
is built in, not an optional plug in unit.that can be removed. No clue 
what is going on. Icom's are notorious for weak protection from ESD. 
Blowing dust in the dry west can blow the tuner and cause very low 
output but RX is fine.
    Thanks, Phil

Larry Young wrote:
> Phil; Remove the ant tuner from the circuit,verify that you have selected the proper ant output jack and if you get little or no power out into a dummy load,  you may have a bad driver transistor in the PA module.You may want to search this reflector archives for more on this subject.
> Larry K4LXV
>
> --- On Fri, 8/12/11, Phil Krichbaum <vailphil at sopris.net> wrote:
>
> From: Phil Krichbaum <vailphil at sopris.net>
> Subject: [ICOM] 756PROIII infinite SWR, very QRP
> To: "Icom" <icom at mailman.qth.net>
> Date: Friday, August 12, 2011, 12:47 PM
>
>     My 756PROIII all of a sudden has gone very QRP on output no matter 
> what band, what antenna or even a dummy load. Is this the classic ESD 
> caused FETs failure in the tuner problem? I've had that happen with a 
> PROII a few times but don't think the SWR was infinite? RX seems  OK!
> 73 Phil N0KE
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