Having slept on this I do not want to walk away from you on this problem. It is very hard doing this sort of diagnostics remotely though.
I have decided to continue offering advice, at least until I run out of ideas.
I have studied the Type 1 and type 2 pictures and believe that there is a significant difference that we must confirm before proceeding.
From what I can see, the Type 2 module uses 390 ,Ohm voltage dropper resistor in series with the 11.3V supply to the VCO. This is supported by the fact that only 34 Ohms is present in the MMIC bias supply lines. 34 Ohms is way too low for 11V operation. I would expect at least 300 Ohms.
The Type 1 module has no visible 390 Ohm resistor. I originally thought it was under the PCB but that is an assumption on my part.
If we assume for a minute that the Type 1 module uses a lower supply voltage, that would explain the excess current draw at 11.3V. The question is, what should its supply voltage bevwhen bench testing the VCO ?
My units had a 200mA current draw so you could set the current limit on your PSU for 200mA, set the voltage to 3V, connect to the VCO power rail, and slowly increase the voltage. The voltage at which the current limiter kicks in will be very close to the normal operating voltage. Very rough but if it is near 5V then that will very likely be the supply voltage used.
As a second and important confirmation of this. Connect a long wire to the power supply pin of the VCO where you have been connecting your PSU. Reinsert the module into the chassis without its lid. Switch on the analyzer and measure the voltage between the wire and the shell of the module. That will provide the operating voltage that we must use.
OK, with regard to your latest weird voltage readings. This is unlikely to be Varicap failure. Look at my schematic for a type 1 module. The mid point of the varicap is the supply rail. One outer point is connected to the PLL control line directly but the other is connected to the PLL control line via those 3 components that loop around the pair of varicaps. There could be an intermittent connection at work here.
Before we make any assumptions we need to establish some facts and be logical in our approach. The correct supply voltage for tests is crucial so let's sort that out first. More tests to follow.
Fraser