| Onan help [message #298673] |
Tue, 05 April 2016 11:32  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma:
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Senior Member |
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I need a bit of help with Jason's Onan 6KW. I think I may be chasing my tail. Mechanically no problem, the set cranks and runs like a top. But. No A/C. P.O. states he replaced the rectifier. Inspection showed one broken tab on the new rectifier, and one loose crimp on it... P.O. had extended the wires from the original connector 'cos the new rectifier tabs are oriented differently. Replaced the poor crimps, fired it up sans rectifier, and there's ~~35V AC on the wires going to the rectifier. Connect + and -, the output is like 1.5VDC. AC winding drops to near zero. Meassuring the + and - shows a ground somewhere along the line, - is grounded, + nearly so. Looking at the schematic, it appears that the DC out of the rectifier goes only through a thyrector and the winding.... I see no ground on the schematic. Is this correct? If so, we've a short someplace in that circuit, if not I've misread it. Reversing the DC makes no difference.
Ideas, anybody? If the winding isn't supposed to be grounded, we'll have to pull the set and go looking. Jason is on the forum, I told him to watch for suggestions. I'm off to a show and then Dothan. If it has to come out, we're go after it Friday week or whenever he's available.
Thanks!
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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