Forum Discussion

jimdmorrison's avatar
jimdmorrison
Explorer
Apr 02, 2021

Circuit board that fits


https://letusdisagree.com/wp-content/uploads/2021/04/circuit.jpeg

Has the #'s 1 21130

I need to replace my circuit board, but the replacement one I got was too big and didn't have screw holes in the right place. Any recommendations on which one I should be looking for? I need the screw holes to mount it or it will touch the metal.

15 Replies

  • That's it! Thanks for your help! Any suggestions on which distribution panel to buy? I don't want to replace the whole converter.

    dougrainer wrote:
    That looks like an OLD Magnetec 12 volt converter 12 volt fuse panel. Now it is a Parallax Power Supply 7345 model. Yours must be more than 20 years old. You will have to adapt or drill the correct mount holes and use nylon washers to stand off from shorting the back metal mount. If mine, I would line it up on the existing metal mount back and mark the mount screw holes and then use 1/4 head inch self tapper screws. Doug

    http://web.archive.org/web/20200228080803/http://parallaxpower.com/wp-content/uploads/sites/8194/2018/09/archived_diagnostic_flowchart_7300_series.pdf
  • That looks like an OLD Magnetec 12 volt converter 12 volt fuse panel. Now it is a Parallax Power Supply 7345 model. Yours must be more than 20 years old. You will have to adapt or drill the correct mount holes and use nylon washers to stand off from shorting the back metal mount. If mine, I would line it up on the existing metal mount back and mark the mount screw holes and then use 1/4 head inch self tapper screws. Doug

    http://web.archive.org/web/20200228080803/http://parallaxpower.com/wp-content/uploads/sites/8194/2018/09/archived_diagnostic_flowchart_7300_series.pdf
  • The new one I got is just a little too big. I'd rather buy something that fits better so I can close the lid.

    This was the part I replaced originally, but accidentally broke the circuit board when I was working on it.
    https://www.amazon.com/gp/product/B004A34G94/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
  • If the board fits the space you have, you just need to get some insulated circuit board "stand offs"..

    Drill new holes in the electrical box matching up with the holes in the new board.

    Something like these?



    Found those HERE

    If you can dig around might be able to find insulated standoffs in different lengths and even threaded screw mounts instead of snap ins.