Quickshot joystick not shooting

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Lardo Boffin
Posts: 655
Joined: Sat Nov 26, 2016 1:42 am

Quickshot joystick not shooting

Post by Lardo Boffin » Fri Nov 24, 2017 7:05 pm

Hi all
I recently acquired a Quickshot joystick which doesnt’t shoot. Well, it did for a few minutes and then gave up.

I opened it up and we have this (yes it needs a clean...):-
3C6720B9-C2EA-4C61-9900-F35C5432785E.jpeg
3C6720B9-C2EA-4C61-9900-F35C5432785E.jpeg (442.07 KiB) Viewed 108 times

It looks like pressing fire pushes the what looks like plastic sheets down onto the contact which makes a circuit. You can see the two sheets sat on the main body. They both have holes in them from years of use. They also both feel like crinkly sellotape!

Is there anything I can replace them with? My current plan is to stick some tape on top of them and see what happens...

Thanks

Lardo
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

Lardo Boffin
Posts: 655
Joined: Sat Nov 26, 2016 1:42 am

Re: Quickshot joystick not shooting

Post by Lardo Boffin » Fri Nov 24, 2017 7:35 pm

Well, one mystery solved. I found a little metal dome rattling around in the case. Clearly the tape was to hold it in place. Shame there are not two as there are two buttons.
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

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1024MAK
Posts: 1799
Joined: Mon Sep 26, 2011 9:56 am
Location: Looking forward to summer in Somerset, UK...

Re: Quickshot joystick not shooting

Post by 1024MAK » Fri Nov 24, 2017 7:45 pm

Yes, I killed multiple Quickshot joysticks back in the day...

And yes, many cheap joysticks back then used a metal "click" disc contact mounted on a PCB with "thick" transparent adhesive tape.

Use a suitable solvent cleaner to remove all traces of the glue from the old tape. Put the metal disc on a flat surface and check it clicks if you press it. Using new strong transparent adhesive tape, refit the metal disc contact back on the PCB. Test, then re-assemble.

Mark

Lardo Boffin
Posts: 655
Joined: Sat Nov 26, 2016 1:42 am

Re: Quickshot joystick not shooting

Post by Lardo Boffin » Fri Nov 24, 2017 8:09 pm

I did that and it worked for three or four clocks before dying again. The dome is still in place. I even tried making the connections directly and got no response.

I opened up the body and it is a mess of frayed and nearly broken wires in there! Looks like a major tidy up is required. Job for another day...
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

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