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T1 and VR both look to be TRC

TY for the picture. Just wanted to verify if the right transformer and VR were in the set. My money is on the VR is bad which in turn caused the T1 transformer to burn up. Transformer is probably shot as well as the VR. Luckily I make a replacement VR for your set. Click link in my signature...

That's the transformer that powers the AC voltage regulator. Can you post a picture of the A1 Voltage Regulator?

What you have circled is the contactor. Basically a big relay used to control power to the lugs. I wouldn't expect any smoke from it.

2.0 V is in spec. Seems the set is flashing which would indicate the MPU is working. Sounds like the set is trying to flash the head but I'd expect the voltmeter to read closer to 208 volts. Meter may be wonkey. Check the AC voltage at the convenience outlet with S1 in START and see if you...

I assume you adjusted the new sensor per the TM. Besides Hz working with S1 in START what AC voltage is shown on the sets AC voltmeter and what position is the AM/VM switch in? What position is the voltage reconnection board in? Now you may be faced with a voltage regulator problem. Need to...

That would explain things :(

If you can locate connector P6 the wire for the MPU run from there to the MPU. The wire is a 2 conductor shielded wire so it will appear as a single "wire" from P6. Unfortunately there are 5 wire sets like that running from P6 to various places.

It should be screwed into the bell housing where the flywheel would be inside. I can only go by the TM. Never wrenched on an 806. Maybe someone can chime in with a pic or location description

No ohms as in almost 0? If so the MPU may be mechanically damaged. Need to remove and inspect the tip of it. They gen damaged if they come in contact with the flywheel.

TM 9-6115-645-24 See Section 2-110 Magnetic Pickup Has testing and adjustment procedure.