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I just checked a VR that came out of a 002A and a VR that came out of a 003A. There is no difference in the number of components. All resistors are the same value and the same wattage. Ditto for the capacitor values and voltage ratings. The 3 transistors are the same. There may be a difference...

Thanks Isaac-1. As soon as the Q3 transistors arrive from Mouser, I will swap out Q3 with a new one and see if the old VR board works. Of course to test it I will have to reinstall it in the 003A I took it out of. This is one of the generators I am refurbishing. Of course if the repaired VR...

It was the VR board. I removed a working VR board from my personal 002A and installed it in the 003A I bought at a GSA auction that I am refurbishing to sell. I hope the VR boards in the 002A and the 003A are the same. Voila! The voltage comes right up to 120/240 each time the generator is...

Thanks for all the replies and suggestions. I "exercised" the two multi-turn pots on the VR board. That did not help. Earlier today I ordered a couple of VR output transistors Q3 from Mouser. When they arrive I will replace Q3. Hopefully that solves the problem. If not I will replace the VR...

I have a MEP 003A that the output voltage is not stable. Most times when started the voltage is 120/240 as it should be. Occasionally when started the voltage goes to 150/300 and stays there. When I shut the generator down and restart it sometimes the voltage goes right back to 300+ and...