[time-nuts] HP 106B quartz frequency standard...the story so far
Mark Sims
holrum at hotmail.com
Sat Aug 8 14:45:35 UTC 2009
Speaking of carbon comp resistors that change value... If you have any Tek S-xx sampling heads for the 7000 series scopes that are not working (almost always shows up with a flat trace off the top or bottom of the screen, visible with the beam finder) the problem is usually that one or more of those 1/10 watt 5% carbon comp resistors have changed in value quite a bit. 20-30% changes are not uncommon.
The other problem (that is almost never repairable) is fried sampling diodes... some idiot over-volted the input (wasn't me... I promise... I'd never do that... I promise...)
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