tag:blogger.com,1999:blog-2257458838727315711.post3871191980183871865..comments2024-03-21T00:37:26.331-07:00Comments on K6JCA: Repair Log: HP 3438A Digital MultimeterJeffhttp://www.blogger.com/profile/04853314106806116765noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-2257458838727315711.post-58325791441703319032021-06-22T19:37:42.868-07:002021-06-22T19:37:42.868-07:00It is very important to look beyond just measuring...It is very important to look beyond just measuring the capacitance values of the power filter caps. In my case for the model, I had the 20uF/50V cap measure correctly +/- 10% but the ESR was bad - was measured via scope with the 100Khz Square wave.Boy Bluehttps://www.blogger.com/profile/11979703077080391690noreply@blogger.comtag:blogger.com,1999:blog-2257458838727315711.post-28808256116953754332020-10-12T14:22:55.233-07:002020-10-12T14:22:55.233-07:00Hi, great article on the HP 3438A especially the s...Hi, great article on the HP 3438A especially the switch disassembly and cleaning. I wish I would have seen your article before attempting to clean my switches. I was finally able to successfully remove and clean the contacts but it took several failed attempts before I found your information.<br />Thanks for posting this!Anonymousnoreply@blogger.com