[Hank G]

I have one that I replaced the caps in and had to resolder the cable where it went into the probe. There is a tube in the probe.
I have not used it for troubleshooting yet but here is an instruction manual in case you don't have one.
http://www.myvintagetv.com/Apple%20PDF%2...Tester.pdf
Don't know if its better than Heath or Eico. Maybe someone can comment on that.

Thanks, I downloaded the manual, sounds interesting.  I think I will go throuth it, and try it out.  I did slide the the probe apart, some of the terminal clearances are very close and could use insulation.
Hank