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<1234567…34>
  • Harlequin - usefull mods and addsHello, I start here a thread regarding mods and adds for the Harlequin. It was found: * that the Sinclair Interface 1 does not fully work at the Ha…

    ... mods and adds for the Harlequin.

    It ... not fully work at the Harlequin.
    * that the ... ) does not work at the Harlequin.

    The ... 79L05 regulator reducing the -12V.
    Each of the ... but leads the -12V of the harlequin to the circuitry ...
    ingo ingo May 2014 Hardware
  • populated Harlequin Rev.D -> Rev.FHi, I like to sell my Harlequin Rev. D board. I modified it to be identical to Rev. F: * switching regulator instead of linear regulator for DC in …

    ... /> I like to sell my Harlequin Rev. D board. I modified ... at SCART output
    * 9 ... 12V at pin 8 of SCART ... needs about 100 mA at 12V DC input.

    [IMG ...
    ingo ingo June 2014 Sales
  • Harlequin Rev. G - error of labels at J16Hi, a German user found an error at Harlequin Rev.G board regarding the labels of J16. The labels of -5V and +12V are interchanged! That could be …

    ... user found an error at Harlequin Rev.G board regarding the ... . The labels of -5V and +12V are interchanged! That could be ...
    ingo ingo November 2015 Hardware
  • Harlequin ZX Spectrum Clone now 100% compatible!Hi all! The Harlequin ZX Spectrum clone now shows full timing compatibility with the ZX Spectrum! 8-) Both the ULA IO and memory contentions are fa…

    Hi all!
    The Harlequin ZX Spectrum clone now shows ...
    csmith csmith July 2007 Hardware
  • +12v/-12v/9v and peripherals?Do any peripherals use the +12v, -12v or 9v lines exposed at the edge connector? Firstly, if they use +9v they won't work on a +3, since the +3 does…

    Do any peripherals use the +12v, -12v or 9v lines exposed at ... traces down to pass the +12v/-12v through, so I'm looking ...
    Winston Winston March 2008 Hardware
  • Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…

    ... and project notes from the Harlequin... a Speccy fan in the ... designed a PCB for the Harlequin! (The Harlequin as you probably remember ... ://trastero.speccy.org/cosas/JL/Harlequin/superfo1.html[/url]

    Winston Winston January 2012 Hardware
  • Best current ide /flash interfaces? and re harlequin cloneHi I have a few 48k rubber-key spectrum's, a harlequin clone board :) on order and 1 (one) divide+ interface. I was hoping zetro's simple IDE woul…

    ... rubber-key spectrum's, a harlequin clone board :) on order and ... also fit / work on the harlequin clone? seeing as thats not ...
    iainjh iainjh February 2012 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…

    ... idea was to put an harlequin board inside, but for the ... 't only have +5v power (+12v and -5v are missing).
    Zup Zup February 2012 Hardware
  • 12V -> 9VI found this simple dc-dc converter: [url]http://www.mcrent.com/workbench/dcdc1216/[/url] it converts 12V to 16V, can it be used to produce 9V by mod…

    I found this simple dc-dc converter:
    [url]http://www.mcrent.com/workbench/dcdc1216/[/url]
    it converts 12V to 16V, can it be used to produce 9V by modifying R1 and R2?
    is there some better solution?
    orange orange October 2012 Hardware
  • Spectrum +2 grey 12v railHello everyone, I have this grey +2 with no video from tv. After much reading and testing i realized it was the internal power supply. At the 12v ra…

    ... internal power supply. At the 12v rail to tea2000 and serial ...
    palex palex November 2012 Hardware
  • 12v in a Spectrum +2My Speccy 128 +2 requires a 9v 2.1a PSU, all my 9v PSU's are much below 2.1 amps :( I do however have a 12v 2amp PSU, if I reverse the polarity so t…

    ... /> I do however have a 12v 2amp PSU, if I reverse ...
    stu232 stu232 April 2014 Hardware
  • BAS-ROM for HarlequinSince it is very easy for everybody to plug a new BAS-ROM into his Harlequin there is the question, what kind of ROM and what additional functions sh…

    ... new BAS-ROM into his Harlequin there is the question, what ...
    HZJ HZJ April 2014 Development
  • A tally on the number of successful builds of the Harlequin[SIZE=4][COLOR=Green][U][B]A tally on the number of successful builds of the Harlequin.[/B][/U][/COLOR][/SIZE] Please post your successes below :-) …

    ... of successful builds of the Harlequin.[/B][/U][/COLOR][/SIZE]
    1024MAK 1024MAK May 2014 Hardware
  • Harlequin case label concept?Hello everyone; I have been thinking about constructing a case for my Harlequin board. Nothing too outlandish; a sheet-metal case very close to the…

    ... constructing a case for my Harlequin board. Nothing too outlandish; a ... to have a Sinclair-style Harlequin label (in raised metal or ...
    Trafferth Trafferth August 2014 Sinclair Miscellaneous
  • Possibly daft Harlequin composite question... :SHi; My Harlequin Rev. F works fine apart from one aspect: there's no composite out... :( I have checked continuity and the discrete components. I.…

    Hi;

    My Harlequin Rev. F works fine apart ...
    Trafferth Trafferth September 2014 Hardware
  • Harlequin runningHi all, Just thought I'd post a wee pic of my Harlequin kit which I received yesterday and assembled in double quick time. A great piece of hardwar…

    ... a wee pic of my Harlequin kit which I received yesterday ... .com/images/stories/IanJ/ZXspectrummod/Harlequin.JPG[/IMG]
    IanJ IanJ October 2014 Hardware
  • Keyboard for ZX Spectrum 16k/48k or HarlequinThere is a keyboard developed originally for use with the Harlequin but maybe used as well with any 16k/48k ZX Spectrum. The keyboards offer a great …

    ... originally for use with the Harlequin but maybe used as well ...
    PokeMon PokeMon October 2014 Sales
  • a harlequin keyboard option (+2a)Hi guys. Finally got around to this, I am using a keyboard from a +2a connected to my harlequin. [IMG]https://farm4.staticflickr.com/3932/1560029…

    Hi guys.

    Finally got around to this, I am using a keyboard from a +2a connected to my harlequin.

    [IMG]https://farm4.staticflickr.com/3932/15600296661_323b6eee4d_k.jpg[/IMG]
    Lost Lost October 2014 Hardware
  • Harlequin keyboards / housingsI have about 20 or maybe more ZX Spectrum 48K's, which I'm planning to sell in separate parts (refurbished boards, ULA's and cases). Now I'm interes…

    ... /> Now I'm interested if Harlequin owners want a refurbished case ...
    bverstee bverstee November 2014 Sales
  • important Harlequin modWhile searching for a better solution for avoiding undesired spikes that corrupt the screen RAM at Harlequin I found a final solution. No additional …

    ... corrupt the screen RAM at Harlequin I found a final solution ... realize these mods at every Harlequin PCB.

    Greets Ingo ...
    ingo ingo November 2014 Hardware
  • where to find Harlequin rev. F all mods till now ?Hi all :) because no more broken speccys around for now, is time to build first of my Harlequin's rev F, I looking in forums and look at Ingo posts…

    ... to build first of my Harlequin's rev F,
    I ...
    gorski gorski July 2015 Hardware
  • SuperFo Harlequin crashes on EnterHello there, I currently have a SuperFo Harlequin at hand which suffers a crash/freeze each time I try to enter a line in basic. Doesn't matter if …

    ... /> I currently have a SuperFo Harlequin at hand which suffers a ...
    Shockwav3 Shockwav3 September 2015 Hardware
  • So, where exactly can I buy a Harlequin?I've looked far and wide but cannot seem to find where to buy one of the Harlequin based "clones". Even an unpopulated motherboard would be a start.…

    ... to buy one of the Harlequin based "clones". Even an unpopulated ... an NTSC user...has the Harlequin had much success on this ...
    cbmeeks cbmeeks October 2015 Hardware
  • Superfo Harlequin Rev D Documentation wantedI have a Rev D Superfo Harlequin PCB. I would like the documentation (schematic and board layout files), but I get a [b]Not Found[/b] error when I cl…

    ... have a Rev D Superfo Harlequin PCB. I would like the ... ://trastero.speccy.org/cosas/JL/Harlequin/superfo1.html).

    Does ...
    1024MAK 1024MAK October 2015 Hardware
  • 12V Rail - Spectrum 48kOkay - I may just be having a senior moment here, but I'm running out of ideas. I'm working on a Spectrum Issue 4S board,and have had to remove al…

    ... -5V are fine, but the 12V rail is at almost 25V ... , and the rail there was 12V as expected.

    Has ...
    Graham Graham November 2015 Hardware
  • Harlequin REV F to REV G upgradeHi guys i have a Harlequin REV F board and noticed its been updated to REV G with teh message of Error on J16 does anyone know what changes …

    ...

    i have a Harlequin REV F board and noticed ... ://trastero.speccy.org/cosas/JL/Harlequin/superfo1.html

    Thank ...
    silverfox0786 silverfox0786 November 2015 Hardware
  • Harlequin Rev. G - Composite video problem.What I'm about to describe I'm not experiencing it by myself, so the probable answer to any "have you tested this or that" question is no, I don't, b…

    ... />
    They have built their Harlequin to specs, with correct face ... much better knowledge of the harlequin electronics has formed his opinion ...
    GroovyDrifter GroovyDrifter January 2016 Hardware
  • Opus Discovery with a HarlequinHi all I am getting a Harlequin and the 128k toaster rack mod but I have an opus discovery and a spectrum +, the + is dead so going to use the cas…

    ... />
    I am getting a Harlequin and the 128k toaster rack ... use the case for the harlequin to live in but does ... the discovery 1 with the harlequin?

    Thanks
    caver99 caver99 March 2016 Hardware
  • Harlequin Rev GI have just got all the bits to build an Harlequin Rev G system and I went for a red solder mask board. I have fitted the 3 surface mount components…

    ... the bits to build an Harlequin Rev G system and I ...
    caver99 caver99 March 2016 Hardware
  • 12V ripple with lower ram installedI repaired a speccy this week. Before doing anything I replaced all caps and measured the transistors in the power section. When doing this I found t…

    ... on and measured the voltages, 12v was giving me an extreme ... on with the ram removed. 12V line was fine with a ... the picture. Looked at the 12v line and there is a ... lower ram ic's the 12v line is ok but when ... causing the instability in the 12v line, it's ruining the ...
    patzik patzik April 2016 Hardware
<1234567…34>

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Related Threads

  • +12v/-12v/9v and peripherals?Do any peripherals use the +12v, -12v or 9v lines exposed at the edge connector?<br /> <br /> Firstly, if they use +9v they won't work on a +3, since…
  • Harlequin ZX Spectrum Clone now 100% compatible!Hi all!<br /> The Harlequin ZX Spectrum clone now shows full timing compatibility<br /> with the ZX Spectrum! 8-) <br /> <br /> Both the ULA IO and m…
  • Can a Spectrum make a Harlequin?I've seen this before, but it's still a bit confusing. Are they really printing circuit boards and a Speccy controls the whole thing? :)<br /> <br />…
  • Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
  • Best current ide /flash interfaces? and re harlequin cloneHi<br /> <br /> I have a few 48k rubber-key spectrum's, a harlequin clone board :) on order and 1 (one) divide+ interface. I was hoping zetro's sim…
  • 12V -> 9VI found this simple dc-dc converter:<br /> [url]http://www.mcrent.com/workbench/dcdc1216/[/url]<br /> it converts 12V to 16V, can it be used to produ…
  • Spectrum +2 grey 12v railHello everyone,<br /> <br /> I have this grey +2 with no video from tv. After much reading and testing i realized it was the internal power supply. A…
  • 12v in a Spectrum +2My Speccy 128 +2 requires a 9v 2.1a PSU, all my 9v PSU's are much below 2.1 amps :(<br /> <br /> I do however have a 12v 2amp PSU, if I reverse the p…
  • BAS-ROM for HarlequinSince it is very easy for everybody to plug a new BAS-ROM into his Harlequin there is the question, what kind of ROM and what additional functions sh…
  • A tally on the number of successful builds of the Harlequin[SIZE=4][COLOR=Green][U][B]A tally on the number of successful builds of the Harlequin.[/B][/U][/COLOR][/SIZE]<br /> <br /> Please post your successe…

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