(ET) No forward motion

[Rhett George <rtg ee duke edu>]

 - Greetings -

A couple of years ago my E-15 lost its motivation to move forward.

It turned out that the push num on the first microswitch to click in 
the forward direction had worn down to the poinjt where the circuit 
was no longer closed.  It that one is not closed, ain't none of the 
rest gonna close.  Fortunately new micro switches this style are easy
obtanium.

A voltmeter will disclose what the switch is doing by measuring the 
voltage across the contacts.

Cheers.

                                        Rhett