I went through troubleshooting 2-27.2 for the Voltage Regulator. Everything checked out except voltage adjustment potentiometer. On the generator on the stand, I got 4.85kohm max, and 4.89kohm max on the second generator. They were both consistent in stopping at those figures. Is the 150 and 110 ohm short from 5k sufficient to drop the voltage from 240 to 210?
I see that there is a voltage regulator adjustment rheostat. It is mentioned here regarding a MEP-002a with a similar issue, but I wanted to get some feedback on the voltage adjustment pots being short of 5k before I go tinkering with the voltage regulator.
Incidentally, the test requires checking voltages with the master switch in the start position. In that position, the output was the full 240v.
I find it hard to believe that both sets have the same problem. Having said that, take a look at the part numbers on the R-1 volt adjust rheostats. Compare the part numbers, with the part numbers in the parts TM. If both sets were "fixed" or sent to Tier 2 at the same time, (makes sense) then maybe someone put the wrong R-1's in the sets? You never know. Seen it happen before, with other parts.
Did you ever see the sets run right before?
I can not answer your question, " Is the 150 and 110 ohm short from 5k sufficient to drop the voltage from 240 to 210?" I am not sure. I do know that we had a bad batch of volt regs come out in 2009, and the quick fix was to adjust the pot on the volt reg to compensate for it. And we were not to do it ourselves, but to let a CECOM Rep do it. Nonsense of course. Check the part numbers first, something stinks here. Coincidence, is always suspicious. Also, did you check the R-1's with the wires disconnected?
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