Looks like I have a 400 hr. tier 2 reset 802A with the same "low AC output" issue. I get 240 on the meter while holding S1 in the crank position, but output drops off to about 56VAC (This is exciter voltage) ( 28V per leg ) when I release S1.
The machine has the quad fuse mod, which tests good.
I plan to work on this machine this weekend and was wondering from Kurt's comment above about A1 pin 7 and 8, what voltage should I expect to see there while its running and S1 closed?
Also, what should I see at A1 pin 1 through the quad fuse for voltage with no load? ( assuming this is an important place to measure )
Lastly, since my starter interrupt is working and I get 240V with S1 closed, is it safe to assume the magnetic pickup is working correctly? (yes)
I have other good running machines available to swap out the VR, but want to do some basic troubleshooting first, to rule out the silly stuff.
A1-1&2 are voltage adjust, from R1
A1-3&4 are the sensing wires. They need to see 120 AC voltage
A1-5&6 go to the F1 and F2 exciter. 24 VDC. Terminal #6 is positive.
A1-7&8 are the input, (Q1 and Q2) to the G1. Voltage is AC.