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<1…15161718192021…34>
  • ZX Spectrum +2A and +2B - finding the true factsI'm confused. Some told me that a +2A has a +3 board, and the +2B got the simplified board. But I think that is not true. I have had over a dozen b…

    ... +2B boards are used in +2A cases, I think it's ... would say it is a +2A as the case says it ... , so it's a +2A with a +2B motherboard - you can say ... it isn't is "a +2A". That is a different computer ...
    guesser guesser December 2013 Hardware
  • +2a problemHi guys just got a +2a from eBay. I can get the menu screen but none of the keys work. I had a look at the membrane, and it looks faultless. Anyone…

    ... membrane is invisible to the motherboard.[/QUOTE]
    Yes, and I ... published a diagram of a +2A/+2B/+3 matrix, but I ...
    1024MAK 1024MAK February 2014 Hardware
  • +2a disc driveFound the answer I was look for!

    The +2A shares the same motherboard as the +3 (the Z70830).< ... /> If you have a +2B motherboard (much much more likely) then ... disk controller gubbins on the motherboard.
    Amstrad planned to release ... SI-1 for both the +2A or +2B.
    guesser guesser February 2014 Hardware
  • +2a disc driveFound the answer I was look for!

    ... of, if I had a +2A/B I would be inclined ... the oddities in the +3 motherboard.
    guesser guesser February 2014 Hardware
  • Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…

    ... 700mA and 1.2A.

    The 1.2A type will run ... />
    Oh, and to post photos, upload them to a photo ...
    1024MAK 1024MAK March 2014 Hardware
  • Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…

    ... . I will post some photos online ASAP however it probably ... and the connectors on the motherboard. They also strengthen the ... remove the membrane from the motherboard. During the long time ... Connection Insert and connectors on motherboard

    [IMG]http ...
    Pierre Pierre March 2014 Hardware
  • Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…

    ...

    Here are the photos of the faulty spectrum.
    motherboard[/B]

    [IMG]https ...
    CornishManicMiner CornishManicMiner March 2014 Hardware
  • +2a modified for OTLAok just wanted some help here as i wanted to use OTLA on my +2A. Now i know i cant put the data on to tape as it just don't work (already tried it). …

    ... Tape/Sound socket to a +2A motherboard should be as simple as ... course your "+2A" will almost certainly contain a +2B motherboard which is ... -ip.org/public/spectrum/schematics/+2A+3schematic.png[/url]

    guesser guesser April 2014 Hardware
  • Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…

    ... I needed to take the motherboard out of the spectrum because ... would need adapting for a +2a because of the lack of ...
    Basher Basher April 2014 Hardware
  • Spectrum 128K Toaskrack Music VolumeHi guys, I have a Spectrum 128K Toast rack, all seems to work OK but I notice that when playing 128K games the AY music is very low volume compared t…

    photos here - the new resistors are ... /> [url]https://www.flickr.com/photos/lost84/13870336525/in/photostream/[/url ... shown on one of the photos, then i had to resort ... mod be done on the +2a? it seems to have the ...
    Lost Lost April 2014 Hardware
  • How Many 128k+ machines sold??i had a 128k+ as a youngster and recently decided to get another to sit alongside my +2a after a long search for the right one i found one in imacula…

    ... another to sit alongside my +2a after a long search for ... +2Bs. A real +2A has the same motherboard as a +3 but ...
    chev chev April 2014 Hardware
  • TEA2000 mod for better CVBS quality?Has anyone tried this before? :confused: [URL=http://s1063.photobucket.com/user/JRT480/media/Evenmoreperfect_zpse2505ab9.jpg.html][IMG]http://i1063…

    ... I did in these 2 photos: coil and capacitor are soldered ... an early +2 which has motherboard revision issue 1?
    Renegade Renegade April 2014 Hardware
  • Another ZX Compact.As a follow up to finding and posting this last year , [url]http://www.worldofspectrum.org/forums/showthread.php?t=42473[/url] I took on the challen…

    ... , instead of the original Speccy motherboard.
    Using both ChameleonPi or ... , I did it with a +2A I bought on eBay, with ...
    bugpat bugpat April 2014 Sinclair Miscellaneous
  • Fixing/modding my new +3Hi, In december I won an auction for a working +3 with a dead floppy drive, + a Multiface 3, some disks and tapes, for a very low price (I think nob…

    ... then you'd have a +2A with a fully populated mobo ... a start - modded a +3 motherboard with a supposed floating bus ... you're using a +3 motherboard you don't need to ... ); one small mod to the motherboard to make the external socket ...
    JeffB JeffB April 2014 Hardware
  • Best 128k Speccy?Hi Which 128k Spectrum is the best from the point of view of the operating system, hardware design etc. Reason I'm asking is that I read on here th…

    ... +3DOS software then a +3 motherboard with the hardware fixes inside ... a replacement GAL. The +3/+2A/+2B are the best designed ... or Centronics support on a +2A or +2B, and you don ... software compatibility. The +3 and +2A need various hardware fixes applied ...
    chev chev June 2014 Hardware
  • Best 128k Speccy?Hi Which 128k Spectrum is the best from the point of view of the operating system, hardware design etc. Reason I'm asking is that I read on here th…

    ... ://www.old-computers.com/museum/photos/Sinclair_Spectrum+2_System_s1.jpg[/IMG]

    Spectrum +2A/+2B (black case):
    [IMG ...
    balford balford June 2014 Hardware
  • Best 128k Speccy?Hi Which 128k Spectrum is the best from the point of view of the operating system, hardware design etc. Reason I'm asking is that I read on here th…

    ... +2As have a partially populated motherboard but you can't tell ... ear if it is a +2A/+3
    guesser guesser June 2014 Hardware
  • I have returned! This time with no tape problems!Hello all. Some of you may remember me from about a month or so ago with this little spawn of satan... :lol: [IMG]http://www.ridgedpixel.co.uk/proj…

    You almost certainly have a +2B, a proper +2A has the same motherboard as a +3 but with the FDC and support chips unpopulated.

    B
    balford balford August 2014 Sinclair Miscellaneous
  • +2a Advice required on how this machine should behave.Hi. As a kid I had a light grey +2, now as an adult I have picked up a +2a.:smile: I've cleaned up the board on the tape drive, and games now load …

    +2a WORKING 100%

    Taking ... further inspection I unscrewed the motherboard from the bottom case, and ... help, this was one troublesome +2a, but I do feel it ...
    lesoleil70 lesoleil70 October 2014 Hardware
  • New multisystem floppy interface (spectrum 16Kb/+2A/CPC464)Dear all, I would like to show you my new extern floppy interface. Same interface can be used for both, CPC and Spectrum systems. CHARACTERISTICS …

    ... to a +2B or +3B motherboard to confirm the resets are ... /> EDIT: squinting at hi res photos metalbrain took of his +3B ...
    guesser guesser December 2014 Hardware
  • New multisystem floppy interface (spectrum 16Kb/+2A/CPC464)Dear all, I would like to show you my new extern floppy interface. Same interface can be used for both, CPC and Spectrum systems. CHARACTERISTICS …

    ... made the trial in a +2A.

    [QUOTE=guesser;808634 ... the drive. I think Google photos reduce the resolution of my ...
    wilco2009 wilco2009 December 2014 Hardware
  • Hacking a +2 into a shorter caseIf anyone's got a copy of the notes or text they posted about re-wiring the +2 joystick ports or hooking up a tape recorder to the motherboard casset…

    ... does anyone sell spare +2 / +2A / +3 membranes?

    Also ... .

    Tradeinpost.com do +2A/+3 membranes but not +2 ... grey membrane in the black +2A keyboard, it will fit perfectly ... out which pins on the motherboard (to datacorder) should go to ...
    1024MAK 1024MAK May 2015 Hardware
  • Is it possible to use a +2b tape deck with a +2 grey motherboard?As per the subject really.. I've tried this and it doesn't work properly.<div><br></div><div>I can hear the tape playing through the TV but no loadin…

    ... /> C3-4522/GEM-194HB Spectrum +2A/+2B Datacorder PCB


    Some photos of PCBs would be handy ...
    guesser guesser May 2015 Hardware
  • +2 Grey versionsThis thread is an attempt to pin down the various hardware revisions of the +2 Grey. If anybody can provide further images from their machines or fur…

    I've got a +2 Grey with an 8639 motherboard. Currently taking photos.
    Made in Taiwan, UK issue.
    If you need them uploading then please let me know.
    MatGubbins MatGubbins September 2015 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... ...
    [url="https://goo.gl/photos/3q7vDvpqwr2Y7RueA"]gallery[/url]

    2A/B and +3.
    fix ...
    Julio Julio October 2015 Hardware
  • Almost perfect RGB signal: +2aI'm using an RGB to scart lead on my +2a and the picture is almost perfect except for anything black on bright white. For example, the copyright mess…

    I can upload a lot of photos of the board of this +2a, if there's anything telltale I should be looking for?
    Thanks
    Jim M Jim M April 2016 Hardware
  • +2 Grey versionsThis thread is an attempt to pin down the various hardware revisions of the +2 Grey. If anybody can provide further images from their machines or fur…

    ... 128+2 Grey Z70500 8640 motherboard
    [IMG]http://i979.photobucket ... free to upload these photos and the photos of the 8639 in ... -
    If you need more photos then please ask soon as ...
    MatGubbins MatGubbins May 2016 Hardware
  • A guide to the evolution of development of architecture of the ZX Spectrum[color=#FF0000][b]New![/b][/color] Black_Cat Info Guide #10 "A guide to the evolution of development of architecture of the ZX Spectrum" http://zx.cl…

    ... .com/retro/images/+3_inside_i1.jpg"]+2A/+3 motherboard is (c) 1987[/url ... the first cite of the +2A going on sale was, and ...
    guesser guesser June 2016 Hardware
  • A guide to the evolution of development of architecture of the ZX Spectrum[color=#FF0000][b]New![/b][/color] Black_Cat Info Guide #10 "A guide to the evolution of development of architecture of the ZX Spectrum" http://zx.cl…

    ... .com/retro/images/+3_inside_i1.jpg"]+2A/+3 motherboard is (c) 1987[/url ... the first cite of the +2A going on sale was, and ...
    Black_Cat Black_Cat June 2016 Hardware
  • Meddling with the RGB signal - any experts out there?A few questions, if anyone knows - is it OK to split the A/V signal and feed it to two TVs? I'm assuming that it's not OK to do this with the RGB …

    ... 128+2 Grey Z70500 8639 motherboard

    The back end ... on the underside of the motherboard.

    Two screens running ... larger screen - I took many photos and the composite screen was ...
    MatGubbins MatGubbins October 2016 Hardware
<1…15161718192021…34>

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