Re: (ET) E15HA PTO Problem

[Chris Zach <czach computer org>]

Might be the problem. If I recall, the E15 had heavy duty electronics, 
and used things like SCRs to set and hold items till power was dropped. 
My initial I haven't seen a thing guess is the SCR that is in series 
with that switch is blown, and as a result doesn't cascade to "on" when 
the switch is triggered and released.

Might also be the diode powers the SCR gate. Replace with something from 
Radio Shack; their bigger silicon diodes should be fine.

Chris


Doug McCorkle wrote:

> Hello all.  I'm a new E15 owner, the HA26E15HA version, and I'm having some
> trouble with the PTO. The PTO works, but only when I hold the switch up in
> the momentary on position, not when I release it into the on position.  I
> just found that the diode CR-3 on the diode varistor assembly board has a
> broken lead.  Is that all there is to this problem?  And, is that an
> easy-to-find diode, as in Radio Shack?
> Thanks for your help.
> Doug McCorkle
>
>
> _______________________________________________
> Elec-trak mailing list
> Elec-trak cosmos phy tufts edu
> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak