[ICOM] IC 756 Pro III fuse over-heating?

[Mel Martin]

In my experience, current draw varies considerably depending on 
frequency and load.
In the past I have found that current draw for 100W out typically varies 
from about around 18 to 22 amps.
With my 746Pro it was higher that on 6M and a lot higher on 2M... closer 
to 25A or more if I remember
correctly (no longer have the rig). It also tended to be higher on 10M 
and 160M.
> 
> I offer the following:  My Pro3 only draws 20 amps during FULL (100 watts) power CW key down or FM / RTTY. Otherwise average current is about 6 amps. On SSB, I usually operate the pro3 at 50 watts and the SB1000 output of 500 watts. I only use the internal ATU on 80/75 and 17 meters for a better match to the amplifier input.
>  
> To eliminate strange stuff on 10 meters I found it necessary to add ferrite chokes to the amplifier key line.
>  
> In addition to the previous excellent suggestions, I recommend you place ferrite chokes on all RF and power cables. Troubleshoot by using a high power dummy load instead of the antenna. Clean ALL RF connectors, male and female with brasso and Q-Tips. Wipe clean with alcohol.
>  
> Joe O, KI5FJ

> 

-- 
Mel, VE2DC