Re: 519 -- broken rate generator; stuck at a very high frequency?
Chuck Harris <cfharris@...>
Hi Sean,toggle quoted messageShow quoted text
I know nothing about the 519, but I do know that tektronix
had a habit of making all sorts of configurations available
on similar scopes. The folks that would buy a 519 often
had divergent interests.
Look carefully for binding posts that should have a strap
connecting them. They could be on the front panel, or the
There also could be other forms of strapping inside of the
scope. It should show up in the schematics.
Well, no dice there either. The transistor seems fine. I'm officially stumped. The contacts for the multiplier switch are working fine, establishes by the fact that the multivibrator is both running nominally (which also implies the two 6DJ8s are fine) and controllable by the multiplier switch and the cycles/sec pot. There's really not much else to this circuit...nothing could really go wrong with the charge line right? It's just a coil of coax.