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<1234567…34>
  • Issue 4S Schematics and DC-DC circuitA while ago I bought a Spectrum 4S that had problems tuning. I removed the RF tuner as I was not going to use it and did the composite mod. It worked…

    ... ago I bought a Spectrum 4S that had problems tuning. I ... that the standard issue 4 schematics and layout documents that are ... not 100% correct for the 4S, which makes it a bit ... if anyone have specific schematics for the 4S?

    I currently ...
    Johan1973 Johan1973 June 2012 Hardware
  • issue 4s for reapirHi All, This time I have issue 4s for repair :) Here is few screen shots and small movie after boot. [url]http://forest.no-ip.org/issue4s/[/url] I kn…

    ... /> This time I have issue 4s for repair :)
    Here is ... /> And what is this issue 4s ? what schematics to look ?
    Thanks ...
    gorski gorski June 2009 Hardware
  • ZX Spectrum not working... issue 4S?Hi, I've bought a "new" broken ZX Spectrum +. The idea was to put an harlequin board inside, but for the moment I'm trying to put it in working order…

    ... says it is an Issue 4S.
    - The computer had been ... ?
    - Issue 4S? In WOS docs there are schematics for Issue 4a ... 've never head about Issue 4S.
    Zup Zup February 2012 Hardware
  • TK95 schematicsI'm looking for the schematics of TK90 and TK95 (brazilian clon of spectrum). Can anybody help me? Necesito los diagramas esquematicos de la TK90 y l…

    I'm looking for the schematics of TK90 and TK95 (brazilian clon of spectrum).
    Can anybody help me?
    Necesito los diagramas esquematicos de la TK90 y la TK95, alguien puede ayudarme?
    Anonymous Anonymous November 2001 Sinclair Miscellaneous
  • need MOD. schematicsAnyone know where I can find schematics for the astec UM1233 modulator?

    Anyone know where I can find schematics for the astec UM1233 modulator?
    Anonymous Anonymous March 2002 Sinclair Miscellaneous
  • ZX Spectrum hardware and schematics(with PCB layout) wantedDoes anyone here has or knows who have the schematics (with pcb layout if possible) of any disk drive interface controller? In the past I had one Mul…

    ... knows who have the
    schematics (with pcb layout if possible ...
    George Peres George Peres October 2002 Sinclair Miscellaneous
  • ZX PC Interface : The manual, schematics and more info... ZX &lt;-> PC Interface ------------------- Contents 1) The ZX &lt;-> PC Interface 1.1) What is it? 1.2) What does it do? 2) Install…

    ... ) Technical info
    3.1) Schematics
    3.2) Altered ROM ... info

    3.1) Schematics

    This is not ...
    Dr BEEP Dr BEEP December 2002 Sinclair Miscellaneous
  • 128K Model SchematicsI can't find the 128K model schematics in the Documentation section or in the 128k SM. Does anyone know where to find it ?

    I can't find the 128K model schematics in the Documentation section or in the 128k SM. Does anyone know where to find it ?
    pern pern August 2004 Sinclair Miscellaneous
  • ULA schematicsHi everyone. Some while ago I remember getting hold of some circuit schematics of the innards of the Speccy 48K ULA. Sadly I've since lost the files…

    ... getting hold of some circuit schematics of the innards of the ...
    Laser Laser August 2005 Sinclair Miscellaneous
  • Lawtronics RGB Schematics ?Hi folks, I have a Lawtronics RGB interface which only half works with my Amstrad CTM 644 monitor. I believe the problem lies with one of the resist…

    ... />
    Does anyone have the schematics or know which value resistor ...
    Andrew Barker Andrew Barker November 2005 Hardware
  • X-10 or X-20 schematics wantedDoes anyone have schematics for the Sinclair X-10 or X-20 amplifiers ? These amp-kits were sold back in 1964/65, and when I read about them, I got v…

    Does anyone have schematics for the Sinclair X-10 ...
    Pilsener Pilsener December 2006 Wanted
  • Spectrum issue 4S ??? What is that?I recieved a spectrum 48k today that i bought from Ebay (rubber). I opened it up and to my surprise it was an Issue 4S, yes 4S!!! I didn't know there…

    ... surprise it was an Issue 4S, yes 4S!!!
    I didn't ... know how can an issue 4S exist?
    gtsamour gtsamour February 2007 Hardware
  • +2 (grey one) schematics + service manualsHi, I have been searching for schematics and service manuals for the grey +2 but found nothing. Does anybody have a link or a manual that could sen…

    Hi,

    I have been searching for schematics and service manuals for the grey +2 but found nothing.

    Does anybody have a link or a manual that could send me?

    Thanks.
    odious odious March 2007 Hardware
  • Spectrum Issue 4SI bought a speccy 48k off of eBay. Looking inside it has an Issue 4S board. But I cannot find evidence that the 4S was ever issued inside the rubber …

    ... inside it has an Issue 4S board. But I cannot find ... evidence that the 4S was ever issued inside the ... speccy but mine definitely says 4S.

    I have only ... seen the Spectrum+ with the 4S inside. Is this a frankenstien ...
    NotCliveSinclair NotCliveSinclair April 2008 Hardware
  • Erratum in Spectrum schematics?Forgive me if this is old news, but I have recently adquired some new microspeakers for repairing damaged ones in various Spectrums. One of these had…

    ... . It seems that all Spectrum schematics from issue 3 to issue ...
    mcleod_ideafix mcleod_ideafix June 2008 Hardware
  • Schematics for grey +2 wantedI would like to have the schematics for the grey +2. Unfortunately, I can't find any on this site. The closest I get is a combined schematic for +2…

    I would like to have the schematics for the grey +2.
    Unfortunately, I can't find any on this site.
    The closest I get is a combined schematic for +2a/+3.

    Can anyone help ?
    Pilsener Pilsener July 2008 Hardware
  • ULA Schematics CompleteHi all. Just a note to say that I have finally produced some readable schematics for the 48K ULA :-) I've also uploaded a few pages from the book -…

    ... have finally produced some readable schematics for the 48K ULA :-)
    csmith csmith June 2009 Hardware
  • Schematics for slown down ModulHas anyone the schematics from a slow down modul? I mean you can make that the Spectrum 48K runs in slower speed. Micky

    Has anyone the schematics from a slow down modul? I mean you can make that the Spectrum 48K runs in slower speed.


    Micky
    -Micky -Micky February 2010 Hardware
  • Schematics for loading amplifier?I'm interrested in making an external portable amplifier in order to be able to load speccy games using an mp3 player. I looked in the internet but c…

    I'm interrested in making an external portable amplifier in order to be able to load speccy games using an mp3 player.
    I looked in the internet but couldn't find any schematics.
    Pointers anyone please?
    gtsamour gtsamour July 2010 Hardware
  • Error in the Schematics.Hi, i have been looking at a Speccy 48 PCB, and have figured out that all the Speccy schematics in the archive up to and including Rev 4a, contain an…

    ... out that all the Speccy schematics in the archive up to ...
    spodula spodula January 2011 Hardware
  • Issue 4S users... I need your help!Short story: Issue 4S spectrum don't work. TR4 seems to have pins at different places from other speccys (BCE versus EBC), and usual replacement part…

    Short story: Issue 4S spectrum don't work. TR4 ...
    Zup Zup March 2012 Hardware
  • Spectrum 48k Issue 4S?I just recieved a Spectrum 48K that had the bottom case from an issue 1 and the top half from a later issue, and the main board is 1983 Issue 4S. I a…

    I just recieved a Spectrum 48K that had the bottom case from an issue 1 and the top half from a later issue, and the main board is 1983 Issue 4S. I am curious in what way it differs, as there are no schematic for issue 4S on this site.
    Johan1973 Johan1973 April 2012 Hardware
  • +2A/+3 schematicsI have downloaded the +2A/+3 schematics and I was wondering what the history of the document is. I also have a pdf by Guesser 30/10/2010. That one …

    I have downloaded the +2A/+3 schematics and I was wondering what the history of the document is. I also have a pdf by Guesser 30/10/2010. That one looks to have been drawn from scratch and its better to look at.
    Fraser Fraser June 2012 Hardware
  • ZX 48 issue 4S no s-video possible?No s-video on ZX 48 issue 4S possible? I have had this mod on my issue 4A. But this did not work with my 4S. On C65 is no chrominance signal. Here …

    ... -video on ZX 48 issue 4S possible? I have had this ... did not work with my 4S. On C65 is no chrominance ...
    -Micky -Micky August 2012 Hardware
  • Does anyone have the Beta 128 schematics?Hi. I was just wondering if any of you had schematics for a standalone version of the Beta 128 interface? I've looked at the schematics of the Pent…

    ... if any of you had schematics for a standalone version of ... /> I've looked at the schematics of the Pentagon and the ...
    Rorschak Rorschak November 2012 Hardware
  • For sale: ZX Spectrum 48K Issue 4SI have a fully restored (and with all chips socketed) ZX 48K Issue 4S, that I am told is a bit of a rarity, that I am willing to sell. Dont know what…

    ... chips socketed) ZX 48K Issue 4S, that I am told is ...
    Johan1973 Johan1973 November 2012 Sales
  • Pimping an Issue 4SSo theres this 4S I have, its been a pain in the backside for ages, this and that going wrong then I stupidly broke it properly by inserting a keyles…

    So theres this 4S I have, its been a ...
    Macc Macc July 2013 Hardware
  • Issue 4S display improvementsHi all, I'd noticed that the display (via modded composite out) of the Issue 4S I repaired a while back (details [URL="http://www.worldofspectrum.or…

    ... composite out) of the Issue 4S I repaired a while back ... /> So if you have a 4S, this looks like a worthwhile ...
    balford balford September 2013 Hardware
  • Issue 4S differencesI decided to buy an Issue 4S PCB after reading much about them on here. It was originally in a plus case which didn't come in the sale. I've been run…

    ... decided to buy an Issue 4S PCB after reading much about ... actually different about the Issue 4S. Is it closest to Issue ... is with using the Issue 4S with Divide. So far it ... 't implemented properly on Issue 4S. Is this likely to be ...
    rga24 rga24 May 2014 Hardware
  • Issue 4S bad M1Never ever seen a 4S with a bad M1 line before today [url=http://postimg.org/image/o2yrigdb1/][img]http://s14.postimg.org/o2yrigdb1/IMG_1291.jpg[/img…

    Never ever seen a 4S with a bad M1 line before today
    [url=http://postimg.org/image/o2yrigdb1/][img]http://s14.postimg.org/o2yrigdb1/IMG_1291.jpg[/img][/url]

    But it is!
    Macc Macc May 2014 Hardware
<1234567…34>

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Related Threads

  • Issue 4S Schematics and DC-DC circuitA while ago I bought a Spectrum 4S that had problems tuning. I removed the RF tuner as I was not going to use it and did the composite mod. It worked…
  • TK95 schematicsI'm looking for the schematics of TK90 and TK95 (brazilian clon of spectrum).<br /> Can anybody help me?<br /> Necesito los diagramas esquematicos de…
  • need MOD. schematicsAnyone know where I can find schematics for the astec UM1233 modulator?
  • ZX Spectrum hardware and schematics(with PCB layout) wantedDoes anyone here has or knows who have the<br /> schematics (with pcb layout if possible)<br /> of any disk drive interface controller?<br /> In the …
  • ZX PC Interface : The manual, schematics and more info...ZX PC Interface<br /> -------------------<br /> <br /> Contents<br /> <br /> 1) The ZX PC Interface<br /> 1.1) What is it?<br /> 1.2) W…
  • 128K Model SchematicsI can't find the 128K model schematics in the Documentation section or in the 128k SM. Does anyone know where to find it ?
  • ULA schematicsHi everyone.<br /> <br /> Some while ago I remember getting hold of some circuit schematics of the innards of the Speccy 48K ULA. Sadly I've since lo…
  • Lawtronics RGB Schematics ?Hi folks,<br /> <br /> I have a Lawtronics RGB interface which only half works with my Amstrad CTM 644 monitor.<br /> I believe the problem lies with…
  • +3 psu schematics and partsHi everyone.<br /> <br /> Does anyone have or knows where to get the +3 psu schematic? I'm trying to repair one but i cant find any info on the parts…
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