Question about Yamaha Electrical Supplies
Runs fine, fuses are fine, not sure how to check the breakers. It was producing electricity just 3 days ago before cold weather hit with light drizzle. Need help fast! Got a job to finish.
Posted by Anonymous on
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Posted on Jan 02, 2017
Hi, remove the electric control panel & check the wiring as sometimes we have seen the wires coming off the voltage change over switches.
Also some of these units you can check the connections in the rear of the alternator & if it has brushes that they are not stuck.
Another problem we have had is the trip switches have went faulty but still switch operates ok, they need to be checked with a probe type tester for conductivety.
Posted on Nov 29, 2008
if they were fine check AVR
don't hesitate to write to me for further information:
Posted on Oct 16, 2009
If it's still under warranty take it back to the retailer and tell them it quit working - don't offer any other information.
If you must fix the E/G yourself - On the generator there's a cover on the back; take the cover off so that the back of the windings are exposed. You should see 4 to 6 diodes mounted to the rotor and stator...those diodes are most likely burned out because of temperature failure, due to overload. You have to take them out to isolate them...they should read .6 Ohms one way; reverse the leads and they slhould read about 1.2 Ohms. If there shorted you'll read 0 Ohms and open infinety.
Anyway, replace those diodes and you should re-establish your field winding voltage which develops you A/C output.
Posted on Nov 24, 2009
I have the same unit and same problem.
I have lost my owners manual. Did you figure out what needs to be done to correct the no output issue.
Posted on Jul 13, 2011
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