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<1…9101112131415…34>
  • 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…

    ... value resistor or a high voltage being present.

    So ...
    DEATH DEATH November 2005 Hardware
  • A french german european Xbox 360I might be able to get a european 360 apart from the powersupply would there be any dissadvantages in getting a european 360 ???

    voltage/wattage or something of the mains? i THINK there are slight differences but most power supplies deal with them.
    wilsonsamm wilsonsamm December 2005 Chit chat
  • questions about the +2 and +3I can`t remember if the +2 and +3 had a port on the back of the computer that let you use your own tape recorder so i`m asking if there was or not ?

    ... audio. You can use a voltage limiting diode to protect the ...
    KeepGood KeepGood December 2005 Hardware
  • monitor wobblyjust recently my crt monitor has been doing something weird. The vertical screen position keeps stretching and retracting slighty from filling up the…

    It's more than likely that the EHT is on it's way out, this unit provides the high voltage to the tube, the symptons you explain are common prior to the pin cushion effect taking place, followed by a slight short hiss and then a blank screen.
    retro-mark retro-mark December 2005 Chit chat
  • "Unknown disk format"-error on Spectrum +3Hi, I have just gotten around to changing the drivebelt in my newly acquired +3. I tried to format one of the 3" disks I bought on eBay the other we…

    ... use a small 7805 type voltage regulator. Anything up to +30V ...
    DEATH DEATH December 2005 Hardware
  • Spec 128 in the U.S.So I have a Spectrum 128 and I am in the U.S. I need to get a power supply that will work with this unit. What can I do here? I should be able to …

    You shouldnt have any problems making the video cable. For the power supply, you'll need a 9v @ 1A (or close to that) adapter. The voltage can vary upto about 13v and it will be fine.
    KeepGood KeepGood December 2005 Hardware
  • Spec 128 in the U.S.So I have a Spectrum 128 and I am in the U.S. I need to get a power supply that will work with this unit. What can I do here? I should be able to …

    [quote]
    On 2005-12-23 03:11, KeepGood wrote:
    need a 9v @ 1A (or close to that) adapter. The voltage can vary upto about 13v and it will be fine.
    [/quote]

    ... and make sure the polarity's right before plugging it in.
    Alcoholics Anonymous Alcoholics Anonymous December 2005 Hardware
  • broken ZX SpectrumHi there I was given a dead ZX Spectrum years ago, and being bored today thought I'd try it again. Its a Sinclair ZX Spectrum with lovely rubbery key…

    ... chip pull the line's voltage down.
    I replaced the ...
    Marcelo Marcelo January 2006 Hardware
  • Didaktik Kompakt MI have probably spelt it incorrectly, but - does anybody know the power requirements for this little machine? What connectors does it use, polarit…

    ... inbuilt PSU... but the characteristics, voltage a.s.o. is not ...
    de Vandemar Croup de Vandemar Croup February 2006 Hardware
  • Didaktik Kompakt MI have probably spelt it incorrectly, but - does anybody know the power requirements for this little machine? What connectors does it use, polarit…

    ... . the PSU gives out stabilized voltage of +5V/1A and unstabilized ... voltage of at about 20V/200mA ... created by the voltage doubler [I](zdvojovac napatia?)[/I ... ] - this voltage is stabilized onto 12V in ...
    FRGT/10 FRGT/10 February 2006 Hardware
  • Didaktik Kompakt MI have probably spelt it incorrectly, but - does anybody know the power requirements for this little machine? What connectors does it use, polarit…

    ... hole being - (negative). Set the voltage to 9V if you can ...
    DEATH DEATH February 2006 Hardware
  • Didaktik Kompakt MI have probably spelt it incorrectly, but - does anybody know the power requirements for this little machine? What connectors does it use, polarit…

    ... hole being - (negative). Set the voltage to 9V if you can ...
    DEATH DEATH February 2006 Hardware
  • PC advice reqd!I have a Asus K7 mobo, Athlon64 XP 2.8GHz, 128MB RAM, Samsung DVD/CD Writer combo, and a 250W SMPS. I'm thinking of buying a Nvidia 6600GT 128MB AGP…

    ... switching PSU for the processor voltage and for the high powered ...
    absorbentgnome absorbentgnome March 2006 Chit chat
  • PC advice reqd.My monitor/graphic card seems to be acting up! I get strange sort of flicker (similar to the ones you get at slightly low voltage) on the monitor at …

    ... I have to change some voltage settings in my BIOS since ... power from SMPS. The AGP voltage is currently set to 1 ...
    Arjun Arjun April 2006 Chit chat
  • PC advice reqd.My monitor/graphic card seems to be acting up! I get strange sort of flicker (similar to the ones you get at slightly low voltage) on the monitor at …

    ... I have to change some voltage settings in my BIOS since ... power from SMPS. The AGP voltage is currently set to 1 ... AbitEQ thingie), and the AGPVDD voltage is showing as 1.54 ...
    icabod icabod April 2006 Chit chat
  • PC advice reqd.My monitor/graphic card seems to be acting up! I get strange sort of flicker (similar to the ones you get at slightly low voltage) on the monitor at …

    ... you could post the other voltage settings. You haven't overclocked ...
    Arjun Arjun April 2006 Chit chat
  • PC advice reqd.My monitor/graphic card seems to be acting up! I get strange sort of flicker (similar to the ones you get at slightly low voltage) on the monitor at …

    ... you could post the other voltage settings. You haven't overclocked ... , natch! I'll post the voltage listing when I get home ...
    icabod icabod April 2006 Chit chat
  • some questionshello all, I havent been here for a while, but Im back, older and wiser (I hope). No more stupid spectrum OS ideas. Well I have a speccy + 2a and I …

    ... socket (barrel). I/P signal voltage shouldn't go above 5V ...
    DEATH DEATH April 2006 Sinclair Miscellaneous
  • Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]

    ... other Speccy, which kept blowing voltage regulators for some reason, I ...
    xenomorph xenomorph April 2006 Chit chat
  • my dodgy speccys.hi people, i was wondering if i could engage some opinions / thoughts / ideas of anyone, regarding my current "fixing up" of my speccys, since you s…

    ... the fault back to the voltage regulator but couldn't get ...
    BruceNorton BruceNorton May 2006 Hardware
  • my dodgy speccys.hi people, i was wondering if i could engage some opinions / thoughts / ideas of anyone, regarding my current "fixing up" of my speccys, since you s…

    ... starving everything of power. The voltage regulator may get very hot ...
    DEATH DEATH May 2006 Hardware
  • Speccy MTBFHi, Looking at the old (issue 1-2) PCBs, they do look like someone knocked them up in an etching bath/with a soldering iron in their shed but has th…

    ... power. With RAM failure usually voltage converter transistor died too.
    piters piters May 2006 Hardware
  • Speccy MTBFHi, Looking at the old (issue 1-2) PCBs, they do look like someone knocked them up in an etching bath/with a soldering iron in their shed but has th…

    Cheers for that. I'm a little surprised the 7805 wasn't more frequent as my own Speccy blew two up.....I wonder if there was some other problem like too high a voltage from the transformer...(?)
    xenomorph xenomorph May 2006 Hardware
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... snapshot button) that pull the voltage low on the /NMI pin ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • +3 psu schematics and partsHi everyone. 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 reference. …

    ... pass transistor of the 723 voltage regulator circuit that forms the ...
    absorbentgnome absorbentgnome June 2006 Hardware
  • 48K power supply coilHi guys, been thinking about making a small quantity of PSU coils for the original 16/48K machines. My problem is, although I can (and have, with gr…

    ... frying and make a few voltage readings and experiment until I ...
    DEATH DEATH June 2006 Hardware
  • Faulty 128KI digged out my Spectrum 128, and it wakes not up. I don't have experience, only with 48K. Maybe someone can give me some hint, clue. It looks like m…

    If not the ULA, it's most likely to be RAM/Z80. You's be surprised at how often the Z80 goes down.

    You can do basic voltage checks to see if all the voltages are present, that may be a start....
    DEATH DEATH June 2006 Hardware
  • Noisy display faultI've been given an Issue 3 48K Speccy PCB which is in good working order except the main display area has slight changes of shade loosely following a…

    ... problem in the PSU. Take voltage measures along the [B]12VA ...
    Marcelo Marcelo June 2006 Hardware
  • Noisy 2A displaymy 2A gives a fairly good display until it has to generate sound or other cpu work, which interferes with the signal, giving some "cloudy" effects …

    ... DC line or if the voltage drops whilst playing a sound ... effect of modulating the supply voltage, so audio will be seen ...
    DEATH DEATH July 2006 Hardware
<1…9101112131415…34>

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