Kirk Wallace wrote: > Because I knew very little about SCR DC motor controllers, I bought a > KBIC controller to play with. Well I managed to break it on the second > day of playing. My problem now, is to replace the broken bits. I am > pretty sure, that what I blew out are a pair of rectifier diodes. I am > guessing I could simply replace the diodes with similar parts with the > same voltage and current ratings. I would appreciate a confirmation of > my guess and any additional advice. The parts in question are next to > the question mark here: > > http://www.wallacecompany.com/machine_shop/00012-1a.jpg > > and a close up here: > > http://www.wallacecompany.com/machine_shop/00013-1a.jpg > >
Ouch! > There is a burned trace above the top part, and I measured zero Ohms in > both directions on both parts. > > What about other traces? How many layers are there in this board? I would check other components, SCRs especially. Diodes were there to protect other parts and probably failed to do so at some point. Remove the board and look at it with strong light behind it to see any other damage if the board is multilayer. > Thanks Good luck, -- Rafael ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
