Voltage regulator dead after crash

[CincinnatiKid]

Physical trauma, I thought, didn’t do these things much damage…. But since after my get off (that broke zero plastics and damaged zero wires), I’m only getting a half a volt out of my regulator.

have 18vAC from each pair of stator wires at idle, 50vAC at revs. Good solid connection to ground, <1ohm. Wires are in good shape. <1ohm from regulator to end of the v+ output wire.

is it bunk!??

 

[CincinnatiKid]

Before you ask

its a SH775AA

 

[salty_monk]

Do you have another one you can test with? That would be the easiest way... I have a spare but postage there & back probably doesn't make much sense, must be someone there local who has one on hand.

Maybe Nessism has a tested one he's selling... if you didn't need it ultimately then you could just sell it on at the same price.

 

[Nessism]

50VAC is weak. It should be closer to 80.

Are you wired directly from the stator to the R/R? If not, maybe the wiring got tweaked in the wreck.

 

[CincinnatiKid]

Got it sorted out.
i have a good FA020 on my kawi ninja that has the same harness plugs, I swapped the SH775 over to the ninja and it worked just fine. Must be wires…. But all the wires spec’d out ok without current thru them.

eventually saw some smoking from the 3 yellows, melted the insulation and shorted a bit. Cut them all out and replaced them with fresh copper and soldered it all together. Also noticed the ground wire was crispy also, changed that for some 14ga instead of the 16ga that was there.

now I’m charging at 14.9 easily. Seems a bit high, I’d love it if it was hovering at like 14.4 but I’ll take it for now. It’s better than the 12.2 of this morning. Yeesh.

wonder if track day high revs crisped up the wires…