Re: Help restoring a 547 scope

donald collie
 

I`d steer clear of even testing the tunnel diodes - they`re darn near
unobtainable- leave well alone. You have two `scopes, why not use one to
trace the trigger signal on the other, and see where the thing stops
behaving as it should. Happy
sleuthing............................................................................................................................................................Don.

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On Sat, Jan 20, 2018 at 12:26 PM, felix_cantor via Groups.Io <
felix_cantor=yahoo.com@groups.io> wrote:

I got the manual "Troubleshooting your oscilloscope" by Tektronix and
measured the voltage across the tunnel diodes (both A and B) to see if that
was the problem with Time Base B not triggering, and both diodes measured
around 220mV.

That means that both are leaky? Because there are no problems with Time
Base A triggering.... weird. Any hints?


Appreciate it!

Best.



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