Thanks for replying, here is the issue I’m getting low voltage 30-40 volts, found some splices from motor line output to breaker panel that were burnt I just don’t know if they were touching ground, I don’t think I would get any voltage at all if it would’ve grounded, so my question is do you think the voltage regulator is bad?
@@sparkyedu If you are getting a low output of say, 30 volts, that is a good thing. That tells you the basic generator is putting out the necessary 'residual voltage' that excites the VR21 card. The card should take that low voltage and process it so that the generator puts out the required voltage. So, yea, at this point and this distance, I feel the card is not doing it's job. Please read the other comments and replies on this video for more info on how the system works. Let me know what you find out. Thank you for the comments.
I’m having an issue with mine not providing voltage as well, the thing is is I have replaced to board with a new one and still no voltage I have went though the troubleshooting steps a few times now and I can’t seem to find the issue with mine it was working great one day then the lights in my house started flickering and pulsing, and I read on the forms to replace the board and now I have 47 volts ac coming out of the leads, the new board I got lucky and found an original onnan,online new and so I snagged it. My question to you is exactly where does the dc voltage come in at and what is it from.
Thank you for the comment. There is no DC 'in' to the board, only AC 'in' at terminals #9,10. The DC out is at the field terminals #7,8, and can be from 0 volts to about 90 depending on conditions such as load. Just going by memory, the field circuit ohms resistance should be about 13 ohms. This is checked between the wires that would go to field terminals #7,8. Have you tried to adjust the volt adjust pot on the board? Since it is a new board, the volt and damping pots may be set to minimum. I am assuming the jumper leads got transferred to the new board? Let me know if you are making any headway.
@@sethparker1473 Thanks for getting back to me. The information may help myself or someone else out on some future job. What will you have to do to repair that short to ground?
Wow your regulator is so clean mines 40 yrs old.
Did you ever make a hand sketch ov this Onan regulator board?
No, sorry, I have not.
Everyone has this stuff laying around...
imp trying to fix a Onan McGraw-Edison 30.0 GenSet generator, you know if this is the manual for it as well ?
The control board should say 'VR21' on it to be the same.
Thanks for replying, here is the issue I’m getting low voltage 30-40 volts, found some splices from motor line output to breaker panel that were burnt I just don’t know if they were touching ground, I don’t think I would get any voltage at all if it would’ve grounded, so my question is do you think the voltage regulator is bad?
@@sparkyedu If you are getting a low output of say, 30 volts, that is a good thing. That tells you the basic generator is putting out the necessary 'residual voltage' that excites the VR21 card. The card should take that low voltage and process it so that the generator puts out the required voltage. So, yea, at this point and this distance, I feel the card is not doing it's job. Please read the other comments and replies on this video for more info on how the system works. Let me know what you find out. Thank you for the comments.
I’m having an issue with mine not providing voltage as well, the thing is is I have replaced to board with a new one and still no voltage I have went though the troubleshooting steps a few times now and I can’t seem to find the issue with mine it was working great one day then the lights in my house started flickering and pulsing, and I read on the forms to replace the board and now I have 47 volts ac coming out of the leads, the new board I got lucky and found an original onnan,online new and so I snagged it. My question to you is exactly where does the dc voltage come in at and what is it from.
Thank you for the comment. There is no DC 'in' to the board, only AC 'in' at terminals #9,10. The DC out is at the field terminals #7,8, and can be from 0 volts to about 90 depending on conditions such as load.
Just going by memory, the field circuit ohms resistance should be about 13 ohms. This is checked between the wires that would go to field terminals #7,8.
Have you tried to adjust the volt adjust pot on the board? Since it is a new board, the volt and damping pots may be set to minimum.
I am assuming the jumper leads got transferred to the new board? Let me know if you are making any headway.
@@zeketheantiquefreak8518 it turns out I was right with all my connections and the board being bad, the rotor it self is shorted to ground.
@@sethparker1473 Thanks for getting back to me. The information may help myself or someone else out on some future job. What will you have to do to repair that short to ground?