How do I cure a "hum" in my 961 power supply. Thought I read here at one time, that the fix was to replace the filter cap. Am I right ?? Thanks Ed W3NR -- FAQ on WWW: http://www.contesting.com/tentecfaq.htm Submissions: tentec@contesting.com Administrative requests: tentec-REQUEST@contesting.com Problems: owner-tentec@contesting.com Search: http://www.contesting.com/km9p/search.htm