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<1…17181920212223…34>
  • Dk'tronics and other similar "add on" Speccy keyboards . What can be done with them and when?. The underlying assumption I am making here is that people who have them will want to "hang on" to them and may also want to get them working . But …

    ... so I thought the membrane extenders worked OK in ... think I had a membrane extension problem rather than ... include

    1) Membrane extenders behaving differently with different ... /> 4) Possible DK keyboard PCB differences for ZX81 and Spectrum ...
    harriusherbartio harriusherbartio March 2020 Hardware
  • Spectrum USB KeyboardI know you can buy these but how do you make one . What I am thinking of be similar to the type described in Issue 1352 of Micro Mart at page 45 .The…

    ... supplied , plastic self stick PCB stand offs . When I ... pressures from the compressed membrane acting like a spring ... pressure on the thin PCB . Whatever the cause ... problem , clearly the pcb was not stuck down ... intended to make the PCB better secured and stable ...
    harriusherbartio harriusherbartio March 2020 Hardware
  • Dk'tronics and other similar "add on" Speccy keyboards . What can be done with them and when?. The underlying assumption I am making here is that people who have them will want to "hang on" to them and may also want to get them working . But …

    ... pin out of the physical connectors are arranged differently. So, you ... just plug a ZX81 keyboard membrane into a ZX Spectrum or ... plug a ZX Spectrum membrane into a ZX81.

    1024MAK 1024MAK March 2020 Hardware
  • Dk'tronics and other similar "add on" Speccy keyboards . What can be done with them and when?. The underlying assumption I am making here is that people who have them will want to "hang on" to them and may also want to get them working . But …

    ... ) gets continuity from the PCB to the YELLOW connector on ... cable) gets continuity from the PCB to the PURPLE connector. This ... (white cable) gets continuity from PCB to WHITE connector on all ... REVERSED . So the small keyboard connectors has the cables wired up ...
    harriusherbartio harriusherbartio March 2020 Hardware
  • The Diagnostic PCBIt arrived in the post today so this is my first go with the Diagnostic PCB. (bought on Ebay) This item , I think , does the same job as Retroleu…

    ... .

    This replacement TEST PCB was slightly different and did ... " on the side of the PCB

    The Edge ... seen before , on Speccy edge connectors, Maybe the metal bits bend ... money , plug in Speccy Test PCB with some "early version" testing ...
    harriusherbartio harriusherbartio March 2020 Hardware
  • The Diagnostic PCBIt arrived in the post today so this is my first go with the Diagnostic PCB. (bought on Ebay) This item , I think , does the same job as Retroleu…

    This time I got PCB v 1.2 . So the ... slotting into "gold plated" edge connectors . This type are loose fit ...
    harriusherbartio harriusherbartio March 2020 Hardware
  • Miscellaneous ZX81 stuffI was not sure where to put this . As it is not Speccy related I had a dilemma . Should it go in Chit Chat . But then I had a better idea : if I call…

    ... . I suppose any METER crimp connectors will work for this type ... arrived in the post ( the PCB are pretty small) so I ...
    harriusherbartio harriusherbartio March 2020 Sinclair Miscellaneous
  • How can I fix a problematic Retroleum Smart Card. I did not do anything "WRONG " with it but I did but it on a flexible cable and this seems to have "upset" it .Since then It does not perform the …

    ... some transparent sticky book cover membrane on the legs of the ... membrane . This reason I did ... overall "leg" area of the membrane . I put it all ... it had . And yes the membrane did look new and had ... to find out the BEST PCB Issue for the 48K ...
    harriusherbartio harriusherbartio March 2020 Hardware
  • What Original Spectrum Hardware Was Made In Korea? There was a "sister thread" for this but about Taiwan:- [url="https://www.worldofspectrum.org/forums/discussion/57248/what-original-spectrum-har…

    ... label their own "sub variant" PCB Issue ? I am not ... manufacturers having their own special PCB designation ( though I have ... the extra high quality keyboard membrane.Another question to ask is ... "Rolls Royce" of the Spectrum PCB "Issue" club? Here are some ...
    harriusherbartio harriusherbartio March 2020 Hardware
  • "Self Isolation" and Speccy PCB repair"These Days" of "home self-isolation" , particularly on rainy days , I reckon I will have more time to hone my Speccy PCB repair skills which are s…

    ... on the underside of the PCB what I was working on ... worked well with dirty edge connectors .
    9) The screen display ... the left side of the PCB. I think it was worth ...
    harriusherbartio harriusherbartio April 2020 Sinclair Miscellaneous
  • Keyboard not working on 3 speccysI have 3 zx spectrums 48k (One was the original one I had as a kid with rubber keys) and I just purchased 2 more.. one original spectrum 48k with rub…

    ... (partial or total) of the membrane.

    Get new ... zx-spectrum-%28speccy%29-keyboard-membrane-2502"]Rubber key[/url]< ... machines are working (other than membrane problems), use a thin piece ... the two keyboard ribbon cable connectors. That is, one end ...
    1024MAK 1024MAK May 2020 Hardware
  • +3 joystick port - replacementOne of the joystick ports on my +3 doesn't always recognise my joystick movements. It's probably a loose connection from either a loose connection (r…

    The PCB mounting D connectors as used on the +2A, + ... the commonly available PCB mounting right angle D connectors have their leads ... different place.

    D connectors are normally fairly reliable, but ...
    1024MAK 1024MAK July 2020 Hardware
  • +3 joystick port - replacementOne of the joystick ports on my +3 doesn't always recognise my joystick movements. It's probably a loose connection from either a loose connection (r…

    [quote="1024MAK;968618"]The PCB mounting D connectors as used on the +2A ... the commonly available PCB mounting right angle D connectors have their leads ... different place.

    D connectors are normally fairly reliable, but ...
    schneil schneil July 2020 Hardware
  • Additional Information , Notes , and Details , re.the Main Windows Edition of Spectaculator There is no lenghy instruction to go with Spectaculator . Mark did a great job adding extra info. with this thread:- [url="https://worldofspectr…

    ... the wires to some D connectors so that they are ready ... use some of the Breadboard connectors ? I am wondering if it ... idea to cut these breadboard connectors back ( so they fit in ... so as to keep the PCB itself "clean" - yes it is ...
    harriusherbartio harriusherbartio August 2020 Emulators
  • Additional Information , Notes , and Details , re.the Main Windows Edition of Spectaculator There is no lenghy instruction to go with Spectaculator . Mark did a great job adding extra info. with this thread:- [url="https://worldofspectr…

    ... The trunking housing the PCB has not yet been ... the rear of the PCB ,a wooden fillet has ... rear of the PCB , to help minimize PCB movement when ... trunking to protect the PCB , I really could probably ... batch , one of the USB connectors broke off . Clearly , ...
    harriusherbartio harriusherbartio September 2020 Emulators
  • Need a new keyboard for Issue 2I've dug out my old Spectrum's today. My +3A and +2 grey are both working perfectly. However, my old early Issue 2 keyboard was replaced with a SA…

    ... work OK but the motherboard connectors are then "widened out ... in" : the Sinclair keyboard membrane was just a thin plastic ... to the old type of membrane . So it is ... go back to the old membrane EVER : 2) Are ... and can replace the connectors on the motherboard if ...
    harriusherbartio harriusherbartio December 2020 Hardware
  • Need a new keyboard for Issue 2I've dug out my old Spectrum's today. My +3A and +2 grey are both working perfectly. However, my old early Issue 2 keyboard was replaced with a SA…

    ... Speccy with a supposed failed membrane so this seemed the ideal ... would shut out the failed membrane . But I got no response ... work with the supposed "failed membrane" rubber key Speccy ( I thought ... up" and settled down. The PCB is unsupported so care is ...
    harriusherbartio harriusherbartio January 2021 Hardware
  • How to Use a real Physical Old Style Retro ZX Spectrum INFREQUENTLY and EFFECTIVELY.These days a lot of WOSSERS use emulators most of the time but like to get out the old Speccy ,every once in a while ,for a quick nostalgic revisit .…

    ... Spectrum with the "non working " membrane (or other fault) can also ... by holes in the Penguin PCB . So the obvious thing is ... standoff could go underneath the PCB (to support the downward pressure ... on the PCB when it is connected up ...
    harriusherbartio harriusherbartio January 2021 Hardware
  • Key Materials ,Concepts , and Ideas for DIY Cases For ZX Spectrum Interfaces.In the 1980's ZX Spectrum Interfaces were largely supplied "cased up" or encased . Nowadays often they are not as they are usually sold as bare PCBs.…

    ... dip the pcb entirely in araldite leaving only the connectors exposed. Once ...
    dm_boozefreek dm_boozefreek January 2021 Sinclair Miscellaneous
  • Key Materials ,Concepts , and Ideas for DIY Cases For ZX Spectrum Interfaces.In the 1980's ZX Spectrum Interfaces were largely supplied "cased up" or encased . Nowadays often they are not as they are usually sold as bare PCBs.…

    ... first arrived as a bare PCB edge connector interface . When using ... clean up and a new membrane.I bought this one because ...
    harriusherbartio harriusherbartio January 2021 Sinclair Miscellaneous
  • Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …

    ... are still 2 remaining connectors on the PCB mounted Speccy port . For ...
    harriusherbartio harriusherbartio August 2021 Hardware
  • Anybody got a parts list for an Issue 3b please?I've got a schematic, but does anyone have a parts list with the values just for the resistors and capacitors? Just would save me sometime going thro…

    ... with the coil, beeper, keyboard connectors etc. But all capacitors, resistors ... to find the parts. The PCB I ordered arrived today in ...
    Your Spec-chum Your Spec-chum September 2021 Hardware
  • specie external keyboard - revision one -[img]https://photos.app.goo.gl/pqeYpXnLqTwYkLvKA[/img] revision one of my external keyboard ... wow it actually worked after a little bit of crash…

    ... on top of the keyboard PCB .. an effect of the external ... was not available ie knackered membrane ..
    mark8bit mark8bit October 2021 Hardware
  • More "What could have been"... The Z280.So in chasing up the Loki specs, I happened upon some parallel developments... And had Sinclair gotten to make the Loki, there could have been some i…

    ... 981893"]The S-100 edge connectors are 0.125" pitch. ... the idea of a 4" PCB, though mainly because 4" ... . Using 2 72pin edge connectors for the CPU slots, ... standard 58 pin edge connectors for the video and other ... also make a good PCB for direct-drive LCD ...
    cj7hawk cj7hawk October 2021 Hardware
  • what soldering / disordering equipment do you usemy experience with zx spectrum / amstrad cpc boards 1.cheap solder braid (not good) need to try some better, any recommendations when i looked i go…

    ... the other side of the PCB. Even then, there's a ... , or when cleaning up edge connectors. I occasionally use it to ... personally, you can soak a PCB in mercury and all the ... I'll pick up a PCB and just go through it ... them for later. Repairing a PCB is a great way to ...
    cj7hawk cj7hawk December 2021 Hardware
  • KEYBOARD PROBLEM HI, MOST OF THE KEYS ON MY SPECTRUM + 48K WONT WORK, I`VE HAD IT FOR YEARS AND WAS WONDERING DO I NEED A NEW MEMBRANE OR IS IT SOMETHING ELSE? THE D…

    HI, MOST OF THE KEYS ON MY SPECTRUM + 48K WONT WORK, I`VE HAD IT FOR YEARS AND WAS WONDERING DO I NEED A NEW MEMBRANE OR IS IT SOMETHING ELSE? THE DISPLAY SEEMS OK IT SHOWS THE "SINCLAIR 1982 " ON THE SCREEN.
    Gav Gav February 2002 Sinclair Miscellaneous
  • Off topic: Fix/replace ZX81 keyboard?I know this is slightly off topic since this is a Spectrum forum, but here goes: The keyboard membrane for my old ZX81 is broken. The part of the me…

    ... goes:

    The keyboard membrane for my old ZX81 is ... broken. The part of the membrane you connect to the circuit ...
    Anonymous Anonymous January 2002 Sinclair Miscellaneous
  • [newbie warning :)] Spectrum +3 questionsHello all, Yes, I am a Speccy newbie [img]/__forums/images/smiles/icon_smile.gif[/img] My Spectrum +3 arrived today, and I already have a few questi…

    ... do you remove the damned PCB off the bloody drive to ...
    Anonymous Anonymous November 2001 Sinclair Miscellaneous
  • Didaktik M (ZX Spectrum clone selling)Here is an offer to buy ZX Spectrum clone ( DIDAKTIK M ) from Slovakia, basic info: 100% functionality, Kempston & Sinclair joysticks connectors, tap…

    Here is an offer to buy ZX Spectrum clone ( DIDAKTIK M ) from Slovakia, basic info: 100% functionality, Kempston & Sinclair joysticks connectors, tape device connector, TV and VIDEO out, 48kB RAM/ 16kB ROM. Price GBP 50.
    peter peter January 2001 Sales
  • Speccy 48K wanted (Preferably from within Durban, SA)Must be in perfect working order. (A broken keyboard membrane won't be a problem though).

    Must be in perfect working order. (A broken keyboard membrane won't be a problem though).
    disc0rd disc0rd May 2002 Sales
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