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  1. Update: I finally got the new SCRs and installed...

    Update: I finally got the new SCRs and installed them on the servo board, but unfortunately, the issue remains.
    I really wanted to fix this board but I don't think I can spend any more time...
  2. I could not find these SCRs here in Costa Rica (I...

    I could not find these SCRs here in Costa Rica (I found some, but they were not ISO tab), so I ended up buying them from Digikey. Should arrive in about a week.
  3. Makes sense, thank you. I just measured...

    Makes sense, thank you. I just measured continuity between the middle pin and the TAB and they are isolated. Thanks for the electronics lesson :)

    I'm looking for SCRs manufactured by Littlefuse...
  4. That's awesome, thanks a lot for uploading it. I...

    That's awesome, thanks a lot for uploading it. I have no clue of what an "iso tab sensitive gate" is but I'll look for options. Also, your drawing seems to be for an Align jc-10a power feed, you sure...
  5. Just found that this curved T is the logo of a...

    Just found that this curved T is the logo of a company named "Teccor" which was acquired by Littelfuse on 2003, now just need to find the specs of these thyristors (assuming that's what they are)
    ...
  6. Thanks for the reply. Are these the components...

    Thanks for the reply.

    Are these the components you are talking about?

    257664

    I have been suspecting about them but wasn't sure if they were Transistors, Mosfets, Thyristors, TRIACs...
    They...
  7. Attempting to repair a Servo Type 100 power feed Circuit Board

    Hello everyone

    I have a friend who is an machinist and owns an old Bridgeport mill with an even older Servo Type 100 power feed.

    He never installed a limit switch on his power feed and then one...
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