On Tuesday, February 10, 2015 12:53:03 PM Jon Elson wrote: > On 02/09/2015 10:43 PM, Dean Posekany wrote: > > After the comments/recommendations to think about attempting a repair > > to the Parker drives, I popped several open and took a good look > > around. On the top surface I could find no obvious problems. Not > > popped caps, no burn marks, nothing. On the bottom, I found what > > looks to be a problem on two of the bad drives. There are three > > SMD's located near the drive output port that appear to be toast. > > The problem is I can't identify them. The board stencil “CR” > > notation seems to indicate they are crystal rectifiers and you can > > see polarity marks on one side. I tried to track down the SMD codes > > online but had no success. Soooooooo, since some of you spurred me > > on, I thought I'd throw this back out here to see if any of you guys > > had any ideas. I've attached links to three photos that may be of > > some help. > > > > This is a close-up of one of my good drives: > > > > _https://www.dropbox.com/sc/fzugl3ebp7hlbbj/AABZSMn6f70FORZS3FpRhRc-a > > _ > > The markings appear to be CU02 then on next line M ON. > The CU02M shows up as a CMR1U-02M, available from Digi-Key. > 200V 1A, 35ns reverse recovery time. > > > Jon
Only 1 amp Jon? Ought to be 2x what the max current a motor would draw for good life. Maybe I am miss-guessing where its at in the circuit? Entirely possible. Has anyone managed to extract a schematic from Parker? Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
