Connect with us

hp slider switch replacement or recyclers

Discussion in 'Electronic Repair' started by dansawyeror, Apr 21, 2007.

Scroll to continue with content
  1. dansawyeror

    dansawyeror Guest

    All,

    One of the 3 contact slider switches on an HP 8505A is broken. Does
    anyone know of a 'junk yard' or recyclers for old parts?

    Thanks - Dan
     

  2. What is a HP 8505A?

    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  3. dansawyeror

    dansawyeror Guest

    I is a vector network analyzer circa 1982. The switch is a slider. I am
    not sure what else they may have been used. I would bet they were common
    in that era.

    - Dan
     

  4. Do you have the service manual? A part number would make it easier
    to find.

    http://www.agilent.com only has the operation manual in PDF format.
    It shows it as 1978, which would make the design 30 years old. Can you
    post a picture of the damaged part on
    by attaching it as a GIF, JPEG,
    or other common image file?

    http://bama.sbc.edu/hp.htm doesn't have the manual, either.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  5. Which switch? I see several on the front panel:
    <http://www.teknetelectronics.com/Search.asp?p_ID=1418&pDo=DETAIL>

    As I vaguely recall, there is no switch assembly. The contacts are
    gold plated traces and large pads on the circuit board. The plastic
    slider has one or more spring loaded contacts inside. The usual
    problem is that the plastic slider become brittle with age and just
    crumbles. Usually the tapered handle that goes through the front
    panel is what breaks off. Is this what happened to yours? If so,
    think about taking it apart and just attaching a different handle. The
    rest of the switch assembly is just fine.

    For hp test equipment parts and pieces, see:
    <http://www.sphere.bc.ca/test/hpparts.html>
    I couldn't find any switches.
     
  6. dansawyeror

    dansawyeror Guest

    Thanks for the reply. No the actual contact sliders came loose from the
    plastic slider. The copper/gold plating is fine. Upon inspection two of
    the slider assemblies are broken.

    - Dan
     
  7. doug

    doug Guest

    This is a standard problem with lots of HP equipment of that vintage.
    What we have done is to tap 0-80 holes into the plastic and then
    reattach the slider to the plastic. I have probably done this fifty
    times and I have never had one break a second time. The design was
    not good and the plastic nipple would break off. Any older parts you
    get would end up with the same problem more than likely.
     
  8. dansawyeror

    dansawyeror Guest

    Doug,

    Thanks, I will look into that. Are there 0-80 screws?

    - Dan
     
  9. dansawyeror

    dansawyeror Guest

    Doug,

    Thanks, I will look into that. Are there 0-80 screws?

    - Dan
     
  10. doug

    doug Guest

    There are lots of 0-80 screws, pan head, flat heat, fillister
    head, etc. They just do not come from sears. They will be
    stocked at industrial suppliers.
    You can get them at the same time you buy the tap and tap drill.
    Good luck. It really is easy.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-