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28-pin DIL header? (COMMODORE ALERT!)

TrafferthTrafferth
edited October 2014 in Hardware
If you are offended by Commodore stuff, look away now...

Hi, guys;

So today I got a SuperPLA to fix my breadbin C64. It worked! Yay! However, when I pulled it out of the board so I could test it in another C64 I mangaged to snap one of its pins off...

Now, the SuperPLA's "pins" are simply a wide-pitch 28 pin DIL header with nice turned pins soldered to a little board. All I need to do is find one of these and I can fix the board.

Only I can't find any. RS do something similar, but it's heavily-framed and not suitable. Farnell, Maplin, eBay and a whole bunch of other people don't carry this.

Any ideas where I can get one? It looks just like a turned-pin wide 28-pin DIL socket, only with pins on both sides. I guess I could use SIL headers (which I have), but I managed to snap pins even with the reinforcing frame and I'm not sure how secure two lots of SILs would be.

For reference, this is the SuperPLA (photos showing the frame): http://wiki.icomp.de/wiki/SuperPLA_V3.

PS: If anyone has stock of these things, can I buy one? :)
Post edited by Trafferth on

Comments

  • balfordbalford
    edited October 2014
    I find those turned pin headers very delicate also.

    I'd use a strip of these (you'll need two for a 24-pin socket) to replace the pins, these are header pin type and are heavier than the turned pin ones.

    I think Zorn uses similar parts for the LRR and URR modules.

    B
    The Spectrum Resuscitation Thread - bringing dead Spectrums back to life
    zx-diagnostics - Fixing ZX Spectrums in the 21st Century (wiki)
    Sinclair FAQ Wiki
  • TrafferthTrafferth
    edited October 2014
    Thanks, Balford - I actually have some of these in the parts drawer. I wasn't sure if these thick pins would be too thick to fit in a standard pressed DIL socket, but a bit of experimentation shows that they fit, but I guess the socket won't stand up to too much punishment that way. Then again,once the SuperPLA is fitted (this time!) it will be a permanent fixture, so that's okay... :)

    Cheers again. -R:)
  • guesserguesser
    edited October 2014
    yeah, square header pins will fit into spring type DIP sockets, but they stretch them so that nothing else connects properly afterwards.
    Not an issue if you won't ever be putting the original back, or if you do you can replace the socket I guess.
    My rubbish website including the redrawn Amstrad schematics and the Sinclair Wiki.
  • ZornZorn
    edited October 2014
    The RAM modules I sell are fitted with fairly ordinary more-or-less square header pins. I don't find them to cause any harm to standard IC sockets. An issue 2 Spectrum I use during testing of the modules has had them plugged in and removed hundreds of times and it still works perfectly well if I plug in the original ICs. However, I do have to clean the sockets' contacts regularly to ensure a good connection.

    After a lot of searching I did find pins designed for inserting into turned-pin sockets, but they are not widely available and are very expensive.
  • guesserguesser
    edited October 2014
    Zorn wrote: »
    After a lot of searching I did find pins designed for inserting into turned-pin sockets, but they are not widely available and are very expensive.

    Yeah, they are pretty steep compared to bog standard square jumper pins :(
    My rubbish website including the redrawn Amstrad schematics and the Sinclair Wiki.
  • TrafferthTrafferth
    edited October 2014
    All fixed; here is the old broken PLA together with the replacement SuperPLA with its new "teeth":

    xmiujc.jpg

    Another Commodore 64 saved from the reaper! :D
  • CameramanCameraman
    edited October 2014
    Www.conrad.nl or www.conrad.de carries those round pin sockets, they look the same as the original ones.
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