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  • Revive Spectrum +3 power supply(ies)Hi all, it's me again... [url]http://www.worldofspectrum.org/forums/showthread.php?t=33677[/url] In continuation from last time, I have two original…

    ... />
    i.e. 1N4001 rectifier diode?
    Crimbo Crimbo February 2013 Hardware
  • ahh..sooo close :) Spec128k+ RGB on LCD monitor helpHello, Was trying out RGB on my 128k+ and a Samsung Syncmaster 204 lcd monitor. Tried this monitor with a Genesis/Megadrive and a SNES and works real…

    ... in series's with the diode in his PDF document. That ...
    csmith csmith February 2013 Hardware
  • Replacing capacitors on a +3 PSUDoes anyone know what kind of PSU does the +2A/B +3 use? Is it a switching one? Judging from it's weight I don't think it must be.... Anyway, I just…

    ... and +12V) and a zener diode for the -12V.
    [QUOTE ...
    1024MAK 1024MAK February 2013 Hardware
  • Replacing capacitors on a +3 PSUDoes anyone know what kind of PSU does the +2A/B +3 use? Is it a switching one? Judging from it's weight I don't think it must be.... Anyway, I just…

    ... and +12V) and a zener diode for the -12V.
    No ...
    Zetr0 Zetr0 February 2013 Hardware
  • DivIDE 57cI've come to the conclusion that my DivIDE57c hates me and my specys. It will not work on either my 48k rubberkey, Toastrack or +2A. I've tried and…

    There are some problems with some signals, too. I've got a 64Mb CF that fails with my Spectrum + and my Spectrum +3, but it works with my Harlequin. That problem is fixed in newer versions (those that have "bus booster").
    Zup Zup February 2013 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    ... kept the resistors in the Harlequin. The resistor bus decoupling must ...
    csmith csmith February 2013 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    ... bothered about when designing the Harlequin, as it was all about ...
    csmith csmith February 2013 Hardware
  • +2 (Grey) and AT/ATX PSUAny ideas on the best way to power a grey +2 board from an AT or ATX PSU? Looking at the schematic, I could do this one of two ways... 1: Bypass th…

    ... is a picture of a diode (note that it is shown ...
    1024MAK 1024MAK February 2013 Hardware
  • +2 (Grey) and AT/ATX PSUAny ideas on the best way to power a grey +2 board from an AT or ATX PSU? Looking at the schematic, I could do this one of two ways... 1: Bypass th…

    ... , my simple and cheap two diode solution in this post [url ...
    1024MAK 1024MAK February 2013 Hardware
  • Killing a Speccy with sound. :(Is it possible to do damage to a Speccy by Loading in a game too loud? I only ask as... that's what I appear to have done, on two different Speccys…

    ... limiting diodes (only a clamp diode) so a very high positive ...
    mcleod_ideafix mcleod_ideafix February 2013 Hardware
  • Killing a Speccy with sound. :(Is it possible to do damage to a Speccy by Loading in a game too loud? I only ask as... that's what I appear to have done, on two different Speccys…

    ... limiting diodes (only a clamp diode) so a very high positive ...
    Graz Graz February 2013 Hardware
  • Killing a Speccy with sound. :(Is it possible to do damage to a Speccy by Loading in a game too loud? I only ask as... that's what I appear to have done, on two different Speccys…

    ... and use a (IIRC) opto diode and load through one of ...
    nuggetreggae nuggetreggae February 2013 Hardware
  • :TECH Question for people who order componentsHi all. I am looking for a component but seem unable to find a supplier anywhere globaly that does not require tradng references and would be willing…

    ... there isn't a burned diode, failed capacitor, and whether that ...
    RetroTechie RetroTechie March 2013 Chit chat
  • Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…

    ... it seems that a single diode can do the job!
    diode (you can use a faster ... shocktty diode) between base and emitter of ...
    mcleod_ideafix mcleod_ideafix March 2013 Hardware
  • Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…

    ... it seems that a single diode can do the job!
    diode (you can use a faster ... shocktty diode) between base and emitter of ...
    bverstee bverstee March 2013 Hardware
  • Rocky Gush Floppy Drive InterfaceI have a Rocky Gush Floppy Drive Interface which I would like to post the details under the Hardware section of the website. What is correct procedur…

    ... confusion. I now see the diode between U3's NAND gate ...
    zub zub March 2013 Hardware
  • Kempston Joystick on Pentagon 128As most of you know, I'm currently in the process of building a Pentagon 128, good news first, almost everything is working nicely, except for the ke…

    ... smaller.

    Moreover each diode junction decreases about 0,7 ...
    TK90XFan TK90XFan March 2013 Hardware
  • Speccy PSUI've grabbed a Speccy PSU from fleabay and it looks like a Speccy Plus PSU. After testing it with a multimeter it's kicking out 12V rather than the …

    ... load (AC side), i.e. diode bridge and capacitor, you should ... the regulation and without load (diode bridge and capacitor), then you ...
    Pierre Pierre March 2013 Hardware
  • PlusD Mini: implementing the CPLDI am doing my first attempts on creating a CPLD to use as replacement for the PlusD's GAL (and other logic lateron). I use the Xilinx XC9500XL series…

    ... last few pages of my harlequin blog if you're interested ...
    csmith csmith April 2013 Hardware
  • TQFP Packaged CPLD, Which pin pitch?A quick question for those of you with surface mount experience. I am currently thinking about building a 128k clone, and hopefully have a bit of fu…

    ... you meant Chris Smith's Harlequin project: IIRC, he used an ...
    RetroTechie RetroTechie April 2013 Hardware
  • Circumspect - A Spectrum Emulator for learningThis is a project that I have been playing around with for a while. It must be said, I tend to have problems getting things finished where hobbies a…

    ... can be changed if D1 diode is removed from PCB, a ...
    TK90XFan TK90XFan April 2013 Emulators
  • SAM Coupe - a video problemHi mates. Lately I managed to acquire a SAM Coupe 512K. There are, however, certain problems that - I thought - You might help me with, in a mome…

    ... test you can connect led diode between +5V and "RED1" pin ... set black screen and LED diode on system connector is OFF ... set red color and LED diode on system connector is ON ...
    velesoft velesoft April 2013 Hardware
  • Faulty 48kHi all, Been a long time since my last vist to the site. I have an issue with a 48k I just picked up. When I type load "" and hit enter nothing hap…

    ... socketed... Maybe its a blown diode on the EAR line or ...
    gtsamour gtsamour April 2013 Hardware
  • Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…

    ... the use of only one diode for keeping the transistor open ...
    roko roko April 2013 Hardware
  • Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…

    ... .6 (be)+2*0.7(diode)=) 2V.

    Greets Ingo ...
    ingo ingo April 2013 Hardware
  • Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…

    ... .6 (be)+2*0.7(diode)=) 2V.

    Greets Ingo ...
    thomas3120 thomas3120 April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... you have a DMM with diode test?
    Falco-F8L Falco-F8L April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... TR4 due to a shortcutted diode in the rectifying stage. And ...
    roko roko April 2013 Hardware
  • Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…

    ... only acts as a simple diode between its base and its ...
    ingo ingo April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... TR4 due to a shortcutted diode in the rectifying stage. And ...
    deadeye deadeye April 2013 Hardware
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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
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    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
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  • +3 Disk drive motor
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    mel the bell on April 20

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