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<1…22232425262728…34>
  • +2a double vision - uncommon problemHelloo - I was helped by Guesser on a previous occasion on a toastrack, so many thanks to him for that! Today's problem is the RGB display from a +2a…

    ... again
    so the final picture is here which is exactly ... the same +2a going to CRT via RF ... sum: we have a black +2a with din power supply
    sliderules sliderules November 2013 Hardware
  • +2A/+3 composite modHi, Anyone has experience doing a composite output mod for +2A/+3? (yes.. I also have a working RGB) A while ago I did one based on the instruction…

    I made the video out mod on my +2A too, the mod with 1 transistor, 3 diods and 2 resistors (Sami Vehmaa), picture was not perfect until I separated the sound and video by removing the capacitor C24 too...
    bugpat bugpat December 2013 Hardware
  • +2A/+3 composite modHi, Anyone has experience doing a composite output mod for +2A/+3? (yes.. I also have a working RGB) A while ago I did one based on the instruction…

    ... video out mod on my +2A too, the mod with 1 ... and 2 resistors (Sami Vehmaa), picture was not perfect until I ...
    mr.spiv mr.spiv December 2013 Hardware
  • Settings on oscilloscope to see composite video signalHello, Learning a bit more about my new Owon digital 2 chan. oscilloscope. Would like to know what settings I should use to view a composite signal…

    ... 12V pin in the +3/+2A|B sockets that could make ... sort to get a usable picture. Having an all-in-one ...
    pkersey pkersey December 2013 Hardware
  • 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…

    ... introduction of the +3 and +2A, with the same board (planned ... when they started selling the +2A. Certainly not until the stock ... . I suspect the +2A with the depopulated motherboard was only sold in ... manufacture stamp. They *all* say +2A on the front.

    chev chev December 2013 Hardware
  • 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
  • Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…

    ... a “common”. E.g. the +2A/B and +3 use this ... one to show as a picture:
    [URL]ftp://ftp.worldofspectrum ...
    1024MAK 1024MAK January 2014 Hardware
  • Is the +3b a myth or just rare?I have a few speccies, one of them being a +3 with terrible sound (terrible that is, until I did a minor mod to replace some resistors, now the sound…

    ... seen a +3b or a picture of one.[/QUOTE]

    motherboard.

    Someone else on ...
    guesser guesser January 2014 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
  • The Spectrum Resuscitation ThreadKicking off this thread as a place where people who are fixing/restoring Spectrums (or indeed any other piece of related hardware) can show off their…

    ... it and there was no picture as I had been told ... 't get any kind of picture. I measured voltages from the ... the screw that fastens the motherboard into the case bottom. A ...
    protek protek 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
  • 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…

    ... eyes tell me that the picture is "nice" it may be ... an early +2 which has motherboard revision issue 1?
    Renegade Renegade April 2014 Hardware
  • my pc hardware problem needs helpYou might have heard of my PC problems by now, but I'm not a hardware person and I have no idea what the problem is. So perhaps someone here can help…

    ... to test than a new motherboard, because some friend could ... the problem lies on the motherboard.

    Which processor ... swollen, bloated capacitor in the motherboard?[/QUOTE]

    Thanks ... ) or I can post a picture here.


    ...
    Timmy Timmy April 2014 Chit chat
  • my pc hardware problem needs helpYou might have heard of my PC problems by now, but I'm not a hardware person and I have no idea what the problem is. So perhaps someone here can help…

    ... 's anything like the last motherboard I had that failed due ... . I've a made a picture of it, trying to post ...
    Timmy Timmy April 2014 Chit chat
  • 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
  • Games with Plus3/Disk enhancementsFor about 95% of games of +3 disk, it was simply the tape version with the only benefit being reduced loading times. However, there were a few excep…

    ... well, you actually see a picture looking down the well). On ... 128/+2 version or the +2A version (which has a smaller ...
    Ivanzx Ivanzx May 2014 Games
  • Dot crawl?Hi, As I'm rather new to the hardware of the spectrum, just to confirm: is this video showing "Dot crawl" ? [url]https://www.youtube.com/watch?v=_U…

    ... hear that! That crystal clear picture without the dot crawl is ... accidentally I used an 1.2A (ZX81) power supply (I modified ...
    jimre jimre 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…

    ... +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…

    ... on the bottom may say +2A or +2B and the on ... start-up menu will say +2A.
    To be certain that ... possible to tell from a picture, some GREY +2 machines look ... black in a picture), check with the seller that ...
    1024MAK 1024MAK June 2014 Hardware
  • Show some love for the Magnum Light GunI remember the reviews were mixed, but in hindsight I suspect the negativity was a result of the quality of some of those initial six games. I recal…

    ... gun that came with the +2A/+3's machines. My favourite ... with a grey-ish TV picture. Maybe that put people off ...
    Your Spec-chum Your Spec-chum 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
  • ZX Spectrum Clock Signal Restorer Circuit[SIZE=5][U][B]ZX Spectrum Clock Signal Restorer Circuit[/B][/U][/SIZE] The circuit below is an experimental circuit. It has only been "tested" using…

    ... and the Amstrad versions +2, +2A/B, +3. The Amstrad versions ... /> Ingo.

    BTW: Your picture link from tlienhard is dead.
    ingo ingo June 2014 Hardware
  • Composite video mod on +2 grey: same as 48k?Hello all, Sorry for the n00b question but I couldn't find an answer yet... I did a composite video mod for the 48k in the past. Now I got a 128k +…

    ... the composite signal from the motherboard/modulator (avoiding the monitor output ... and it gives a stable picture, the dot crawl is still ...
    MatGubbins MatGubbins June 2014 Hardware
  • MISSING M1 LINE ON +48????I was posting questions about my DIVMMC enjoy not working on one of my +48`s and have now got round to testing if its cpu related.Trouble is the one …

    ... -rack, a +2 grey, a +2A, a +2B or a +3 ... (and should work in all +2A, +2B and 3 machines). Some ... sometimes may work, but have picture artifacts).

    Also note ...
    1024MAK 1024MAK July 2014 Hardware
  • New Spectrum User - Inveterate UpgraderI've been asking a few questions about my Speccy, which is the first I've owned despite my advancingh years. I was a C64 kid, but please don't hold …

    ... this. My ZX81 has better picture now I've installed Pokemon ... locked to one another (the +2A, +2B and +3 use a ... don't forget, the Zeddy picture has no colour component at ...
    1024MAK 1024MAK July 2014 Hardware
  • New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…

    ... on a +3 and a +2A, and S-video on one ... with the cover off. The picture quality is gorgeous, and it ...
    rga24 rga24 July 2014 Hardware
<1…22232425262728…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • European Software Titles with an English version
    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
    AndyC on April 21
  • Celebrity deaths...
    mel the bell on April 20

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