Re: Puzzle of the day: 465b will not trigger on channel 2 SUCCESS!
I did a bit of digging around the normal trigger pickoff. I noticed that (what the block diagram calls the delay line driver next to the pickoff) transistor Q1426 is a NE472 not 151-0472-00 or NE41632 equiv. Q1428 is the correct Tek one, 151-0472-00.toggle quoted messageShow quoted text
Is this causing the bad trigger problem?
The voltage on the collector of Q1426 is -1.5v not -1.2 as on the schematic but I guess that is down to the wrong transistor.
--- In TekScopes@yahoogroups.com, "jeffbathwater1" <jeffbathwater@...> wrote: