Honda EM5000S generator will not produce power

[UNC119]

Greetings all, newbie here
I have a Honda em5000s generator that I'm working on for a neighbor, it sat for a while.
I did a complete fuel system clean
Purrs like a kitten now, but it's not making power, can someone tell me the best way to flash this thing?
I tried a angle grinder plugged in, trigger on and spun it on a board with the generator running, is that method correct or not? Thanks for any input

 

[Cujet]

Just a guess: Failed AVR (automatic voltage regulator) or failed diode pack (if it is separate, I don't think it is on that model)

Flashing the field is one of those things that works on some old models. But most of the time, there is enough residual magnetism to allow power to build. Does a voltmeter show anything?

 

[UNC119]

This generator has a green light and a volt meter on it, both are not doing anything. The generator came from Port st. Lucie, in a air conditioned garage, what a easy life for it, lol. It's a 1995 and is in mint condition. I just searched for a avr, they are common failure parts from what I'm seeing online, everybody sells them. I'm now going to look for some testing procedures. Thanks for the reply

 

[Ursatdx]

 

[UNC119]

Thank you, I just watched the video. Going to try that in a bit, I have to whip up some leads.fingers crossed

 

[mk378]

Check that you're really not getting any voltage from the generator head. It could just be a problem with the wiring, circuit breakers, or GFI outlets.

 

[UNC119]

No power on the flashing method, bummer
As far as wiring... this thing looks great, no green crusties on any exposed copper.
I think it's time for a avr, I did some research, the common one is 15$, I have the other..more expensive one, 85$. Glad I looked deeper, I never have the quick to get, less expensive part, Murphy law applies again, lol

 

[UNC119]

Watched another video, this one state's that I should see 55 ohms minimum, up to 80 ohms across the brush terminals, that's my next test, and if the # is higher, pull the brushes for a visual inspection.
Oh boy, this is going a lot deeper than a carb. clean, lol

 

[UNC119]

Progress, I found 150 ohms across the brush terminals, not good
I pulled the brush assembly and found one brush at the end of its wire, the spring was at its limit.
The other was longer, well within range. And the ohms across the slip rings was 57.
Would you agree that a brush assembly would be the fix? I'm a little nervous that this thing was abused, like loaded to the max and this fix would be a short term fix, a bandaid repair

 

[mk378]

Check the rotor for ground fault as well. There should be no continuity from the slip rings to ground.
If that's OK yes it probably just needs brushes.

 

[UNC119]

Ok, I will check, I am thinking that this thing sat longer than I was told...and I caused the wear down on the brush, right? Sat for long time, slip rings oxidized, if that's the right word, I fired it up and wore the brushes down in a short time.
It was a garage queen, never saw the light of day, lol, that fooled me,.. The shiny paint and all.

 

[Cujet]

Ok, I will check, I am thinking that this thing sat longer than I was told...and I caused the wear down on the brush, right? Sat for long time, slip rings oxidized, if that's the right word, I fired it up and wore the brushes down in a short time.
It was a garage queen, never saw the light of day, lol, that fooled me,.. The shiny paint and all.

It's possible that can happen. Brushes are easy enough to deal with. Clean up the parts and off ya go. I still suspect AVR. The capacitors and diodes do go bad.

 

[UNC119]

It's alive, new a/m brushes, a little sanding on the slip rings, viola.
Thanks for the guidance