I finished rechecking the third and final Sender Resistance test this morning. All is now quiet on the Low Pressure Front.
This set of tests involves testing resistance from selected pins on the seven Sender valve sockets to just three terminals on either of the two 8-pin connectors on the back of the Sender. Some of these tests might require specific settings for the Band Selector Switch, Mode of Operation Switch or Power Switch.
22 tests make up this set and in the initial work through, I had 7 suspect results. Of those, three now came out spot on and the remaining four read excessively high, but not as bad as the first round. Interestingly, these four readings all come from the V1J socket for the Voltage Amplifier.
So now that I have believable data, the next step is to look at the actual circuits on the schematics to see what components relate to each test in the three sets of results, and start looking at those parts on an individual basis.
David
|