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N3833A demage RF distribution switch

Question asked by mirek on Jan 29, 2014
Latest reply on Jan 29, 2014 by jvall
I have N3383A that appear to have damage RF switch that redirect the power between each port.
The symptom are:
I can see correct power on R receiver (and the source attenuator all woks good), however the power is very low for any reflected measurement and thru measurement at all 3 port.

I know that this model is out of service and wonder how I could repair that.

I have another two units  N3383A that have damage power supply, so I wonder if it will be simpler to swap power supply module from the first unit to the other or take the switch from the unit with damage power supply and put in the first unit. 
Any idea  how to do that?