[time-nuts] Bad capacitors (was Volt-nuts cooperation?)

Mark Sims holrum at hotmail.com
Sun Jun 21 12:21:39 EDT 2009


The problems I saw were mostly hard failures in the caps (opens/shorts/etc).  These were in both power caps and signal caps. 

One lot that I saw was a group of 12 Mettler scales.  6 were used daily and 6 were never used backup units.  When the company shut down the operations that used the scales,  they were sold.  All the used units worked fine.  The backup units all had capacitor problems.  

I also bought a lot of new-in-box Tektronix TM500 modules.  Most wound up having flakey capacitors.  BTW,  EVERY (new or used)  Tek  PG505 pulse generator you will come across will have bad power supply filter caps...  unless they were replaced.


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Does this happen even if the electrolytics are reformed before use?
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