Connect with us

Help a noob repair a flat cable in a Dualshock 2

Discussion in 'Troubleshooting and Repair' started by zacchi4k, Dec 5, 2016.

Scroll to continue with content
  1. zacchi4k

    zacchi4k Guest

    I've got a Dualshock 2 where the flat cable going to the analog sticks PCB has ripped from it.
    I've cut the broken part and tried fixing it, but I couldn't manage to.
    Melting the plastics to get to the "wire" causes is to melt too, and also dropping some solder into the "wire" also melts it too
    Is there a way to repair this?

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  2. davenn

    davenn Moderator

    14,003
    2,025
    Sep 5, 2009
    Hi there
    welcome :)

    not likely to be repairable, as you discovered, you cannot solder to it

    the manufacturer or their repair agent may be able to help with a replacement membrane


    Dave
     
  3. 73's de Edd

    73's de Edd

    3,365
    1,406
    Aug 21, 2015
  4. zacchi4k

    zacchi4k Guest

    Hi,
    Thank you both!
    If I get a replacement membrane, how can I "attach" it to the PCB?
     
  5. davenn

    davenn Moderator

    14,003
    2,025
    Sep 5, 2009
    from one of the sellers .....

    can you call yourself a professional electronics tech ? or even semi pro ?

    if not, then you need to find a place that can do this for you


    Dave
     
  6. zacchi4k

    zacchi4k Guest

    I don't understand...

    Well... no. I just have some skills using the soldering iron.
    But I want to experience.
     
  7. 73's de Edd

    73's de Edd

    3,365
    1,406
    Aug 21, 2015
    YOUR unit is very distinct on the connecting assembly, as the others use side by side contacts and a plug in connector.
    YOUR unit uses 18 STAGGERED gold flashed contacts ? confirm the gold ? and a compressive connector.
    I will prep you up a procedure tomorrrow, and you then see if you are capable.
     
  8. zacchi4k

    zacchi4k Guest

    Well, I seem to remember that when the cable ripped there was some black stuff that fit perfectly on the contacts, but since I originally planned to repair the flat cable with wires and solder wasn't sticking to them, I scraped it off. Now there's this yellow stuff (which at this point I think it's gold) where a bit of solder sticks to it (but enough to fix the wire in place).
    There are 18 connectors which were just glued to the cable, no plugin connector.
    I don't really know what do you mean by "compressive connector"
     
  9. zacchi4k

    zacchi4k Guest

    It looks like this:
    [​IMG]
    But, again, without the black thing on the contacts.
     
  10. davenn

    davenn Moderator

    14,003
    2,025
    Sep 5, 2009
    so you have damaged the board as well by ripping off the black connection points

    time to buy a new controller :)
     
  11. zacchi4k

    zacchi4k Guest

    ...isn't it still conductive? Please?
     
  12. 73's de Edd

    73's de Edd

    3,365
    1,406
    Aug 21, 2015
    Sir zacchi4k . . . . .

    On your unit, it was initially using interleaved gold flashed contacts on the PC board where you will notice the interlacing of long and short contacts from one side to the other.
    On the updated version of the PC board, they are now using fused on glazed carbon contacts for the 18 PCB connections.
    As per my reference to " compressive contacts " they are not soldering the flexible cable to the PCB contact pads nor are they using any adhesive . . . electrical connection is solely being maintained by merely keeping the two parts contact areas being FIRMLY pressed together.
    Refer to my first drawing at the left and you will see the bottom cover clamshell and there is a yellow rectangle
    drawn in, that will be the compressing item, be it either by a springy pressure plate or a cushiony rubber pad or a combination of both.
    On its examination, you can further expound of its construction mode to us.
    When you place the flexible connector assembly over the white studs, which I have marked with YELLOW circles, and then when you reassemble the bottom clamshell onto the unit, the developed compressing effect upon the flexible cable and the contact pads on the PCB should then maintain a good electrical connection pressure between the two.

    ILLUSTRATION OF FLEXI-CABLE TO PCB CONTACT INTERFACING INSTALLATION:


    [​IMG]


    ILLUSTRATION OF CORRECTIVE REPAIR PROCEDURE :

    [​IMG]

    If you have a 40-60 watt soldering iron, 60/40 rosin core solder, liquid rosin flux, coax cable to salvage
    braid from or wide SOLDERWICK, PLUS soldering expertise you just might save that unit with the new
    staggered contacts flexicable and pad assenbly previously being referenced to .
    If so, reply for my further explanaton of . . . . .the 2nd how to do it to it . . . . . illustration.


    73 s de Edd
     
    Last edited by a moderator: Dec 7, 2016
  13. zacchi4k

    zacchi4k Guest

    Uhm.... yeah, I guess I could try.
    Could you also please tell me how wide should the solder wick be?
     
    73's de Edd likes this.
  14. 73's de Edd

    73's de Edd

    3,365
    1,406
    Aug 21, 2015
    Sir zacchi4k . . . . .
    To be most effective, a minimal 3 mm on up to a max 5 mm would be within the properer width possibilities.
    The (shift into 72 font type) REAL (shift out of 72 font type) secret of optimal Soderwick effectiveness, is the LIBERAL additional use of some liquid rosin solder flux for wetting.
    THEN a good flux clean up from the board, after the retinning operation.

    You submitted two photos of those PCB tinned connections and the first one was a mess, but on this one, you have cleaned it up quite well . . .I commend you ! . . . on the improvement.
    The present condition of the solder tinnings on the boards traces tinnings are still quite rough.
    If a gnat (moscerino) was on your board, the solder surfaces would look like a rough cobblestone road.
    The tinnings need to be evened / flattened and have the appearance of a fine tin plating.
    The only connection that seems to be needing a rebuild is your end connection near my #1 number assignment, which I have overdrawn in PINK.

    Lets see how good of a shape the board can be reworked into, on all of its 18 fingers before ordering the flexi-cable assembly.

    Return when you have the rework materiel on hand.

    73 s de Edd
     
    Last edited by a moderator: Dec 9, 2016
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

-