Fixing KW transformer

Open up the transformer and look for a possible broken binding post(s).

Also make sure the contact arm for the throttle in question is touching the coil assembly, and that the carbon roller is not broken.

Larry

Both handles arms run across the same coil so follow that path out.

If they don't, if you see gears on one handle stem, you have a rare yet undocumented prototype. I had one as a kid. 

Best advise? Get rid of the TV tray! Don

Thanks Larry,

I had just replaced the rollers too, with the rectifier and those are fine. I even took the throttle handles, and roller arms off the shaft to see if something got jammed up when it fell.  nothin.  It looks fine to the eye. Could the circuit breaker be "on" to that controller somehow?   

You're right Don about the TV tray! I swear, it was just for a few minutes to get the feel of how it would work before taking the old one out....

If you get voltage on one throttle, the circuit breaker is OK.

Double check the entire faulty throttle mechanism against the good one and make sure nothing is bent or broken, and is making contact properly on the coil. Double check all wiring also.

Larry

@Mike23 posted:

 Could the circuit breaker be "on" to that controller somehow?

The breaker is on the "U" posts.

This could be as simple as the connection popping off of the faulty "A" or "B" post just inside the transformer case, a commen failure.

I fixed it!!!!

Fixed it!!!

Ya baby!!

From different replies in different groups it seems like it was as you guys say- a bad wire or post...but it wasn't. but so close!!

The copper contact from the reverse direction button was not making contact.   (see video)   So that contact- making contact keeps the voltage full. Pressing the button and separating the two copper contacts drops the voltage to zero.  When the transformer fell, it fell right on the direction button!!!!! It jammed so hard the contact was bent away yet very close and as you know in a spot that is very hard to see!!! I starred at that thing for days hoping something would just present itself!!! Thank god there's twp buttons to compare.

Works good as new!!

Thank you all for your suggestions and help!!