Yes I've been through the process in the service manual with an oscilloscope and the part number of the Schmitt trigger (apologies for the auto-corrected spelling above) is TL072CP.
What I'm after is any "gotchas" or hints before I head down this path. Jim Palfreyman On 13 December 2015 at 18:06, Hal Murray <hmur...@megapathdsl.net> wrote: > > > jim77...@gmail.com said: > > I have gone through the troubleshooting process from the manual and it > seems > > to point to A4U2 (Schmidt trigger) being faulty. > > I'd put a scope on it to check. > > > Before I dive into this, does anyone have any advice? Most important > being > > the Schmidt trigger - where do I get one? > > You need more info - the manufacturer's part number or something like that. > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.