[ICOM] 706 help needed

[msole at loxinfo.co.th]

Hi Charly,

You just knew I'd be lurking here now didn't you?

Sounds like it has lost ALC loop control. No forward voltage from the directional coupler means 
no power meter reading and no ALC indication and no power control. All makes sense to me.

Now, whadda we gonna doooo about it?

Martin, HS0ZED
In the airport at Hong Kong and on my way home to Bangkok tonight :-)




Quoting Charles Harpole <k4vud at hotmail.com>:

> IC-706 Mark 2 problem:
> Symptoms
> Sudenly stopped the variable RF output function.  And, the RF power out 
> meter now shows nothing , but RF is being output at about 150 watts.
> 
> Happened
> when I had it hooked correctly to an IC-2KL that worked with it before 
> moving the whole set up to a new desk.  I keyed down with the menu allowing 
> me to adjust RF power out to 50 watts.  Worked ok but 2KL went to fault for 
> unknown reason.  Reset 2kl and keyed CW on 706 again.  This time, the 2kl 
> faulted off and the 706 RF power output meter stopped showing anything.  The
> 
> meter will show ALC and small SWR, but no PO.
> Also, at the same time, the 706 now (off the amplifier) will only output 
> about 5 watts and with slight turn of knob goes to full output with no 
> gradient of po allowed.  AND, the RF out is now about 180 watts on 20m and 
> at least 130 watts out on all other bands.  (Earlier it was only full 100 
> watts on all bands).
> 
> What happened?  and how can I fix it???
> 
> Big thanks and 73
> 
> Charles Harpole,  HS0ZCW
> k4vud at hotmail.com
> 
> 
> 
> 
> Charles Harpole
> k4vud at hotmail.com
> 
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