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Ray, thanks for the offer, but I don't know yet, it was getting dark when I managed to get around to the generator project last night, too many other must do projects came up, like the door knob on the back door of the house breaking, etc. It will probably be Wed or Thurs before I can get back...

Just to let any lurkers know, I bought a replacement T2 from Jerry, installed it today and now get good voltage, so on to the more trivial (hopefully) problems, frequency meter, glow plugs, etc. Ike p.s. I can see how someone might make the mistake and install this transformer backwards as...

will empty did not realize

It is looking like this is a 4.5:1, 31.1VAC secondary at 140VAC primary according to the specs, so I suspect any common 120VAC to 28VAC transformer of about the same size should work, if I can't find an exact match. Ike

The first thing I did was swap boards with the spare one I had bought from you, before running through the flow chart (did not have the manual with me at the generator), so I don't know the condition of the original AVR board yet (voltage was high). I think I will probably set up a test bench...

No such luck, the transformer is fried, visible chucks missing and open circuit on both sides. Just for clarity I am talking about the transformer with 4 wires going to it 72-5004, it seems the TM refers to this as T2 in the cabinet and T1 in the test bench circuit. Ike p.s. Jim, do you...

Well today I found the source of the voltage control problems on my new to me MEP-003a, it seems someone wired T2 up backwards with the X1/X2 wires goes to H1/H2, and vice versa. This seems to be a simple enough step down transformer, but I can't find any specs online, so I am therefore asking...