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.
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