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Search Again :: Adv Search 1000 results in 0.002s
<1…19202122232425…34>
  • Issue 2 voltage troubleDear all, I got my hands on an old issue 2 from a friend. Price was close to zero so I did not hesitate to take it. After powering it up I was sur…

    ... of the 5.1V zener diode. Reading was 4.4V so ...
    maskenlos maskenlos December 2011 Hardware
  • UK computers in the USIs there any problem running UK computers in the US? I plan on using a step down transformer but will the 50hz to 60hz change cause a problem? I pla…

    ... the speccy's stupid reversed polarity though!)

    The mains ...
    guesser guesser December 2011 Hardware
  • +3 No power LED, disc motor continually spinning..and no display. I searched the posts and i found a really old thread going back to 2004 where fuses in the psu were discussed, checked em in this an…

    ... . [strike]It's a zener diode so it's back to ... to the end of the diode with the line/black.
    guesser guesser December 2011 Hardware
  • Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…

    ... inverter with a base-collector diode and a speed-up capacitor ...
    Zorn Zorn December 2011 Hardware
  • Issue 2 voltage troubleDear all, I got my hands on an old issue 2 from a friend. Price was close to zero so I did not hesitate to take it. After powering it up I was sur…

    ... was coming from D11. This diode got shortcutted while I was ...
    roko roko December 2011 Hardware
  • What spectrum?I am going to have a gent send me some Spectrum hardware in the future. Me being a american and knowing nothing of the sort, what would be the best o…

    ... be sure to get the polarity of the plug correct!)
    guesser guesser December 2011 Hardware
  • Repairing another Issue 2 48K Spectrum.I said at the start of the other thread that I've got another one of these and I've started investigating it. The board is more-or-less exactly the …

    ... is original (without added cap + diode). Absence of -5V tells all ...
    roko roko December 2011 Hardware
  • Repairing another Issue 2 48K Spectrum.I said at the start of the other thread that I've got another one of these and I've started investigating it. The board is more-or-less exactly the …

    ... is original (without added cap + diode). Absence of -5V tells all ...
    Zorn Zorn December 2011 Hardware
  • BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…

    ... the -5V departement. The rectifying diode could be D12 or D18 ...
    roko roko December 2011 Hardware
  • Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…

    ... .4A output (MAKE SURE THE POLARITY IS RIGHT FIRST!). I have ...
    Fred Fred December 2011 Hardware
  • BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…

    ... loading. If meter has a 'diode' position, you might use that ...
    roko roko January 2012 Hardware
  • BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…

    ... , the meter does have a diode position and using this current ...
    Marshall Marshall January 2012 Hardware
  • BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…

    ... reading in one direction during diode test, is the forward threshold ... voltage (offset) of the diode in millivolts, 500-700 is ... the normal value. Diode is good then.

    diode threshold, that's not bad ...
    roko roko January 2012 Hardware
  • 128K sound balanceHello knowledgable-type people, I'm trying to get the best sound on this 128K+ toastrack, using RGB. I've tried using the normal MIC socket. It work…

    ... actually the leg of a diode) and that sorted out the ...
    RobeeeJay RobeeeJay January 2012 Hardware
  • 128K sound balanceHello knowledgable-type people, I'm trying to get the best sound on this 128K+ toastrack, using RGB. I've tried using the normal MIC socket. It work…

    ... actually the leg of a diode) and that sorted out the ...
    Spirantho Spirantho January 2012 Hardware
  • BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…

    ... /> Pay careful attention to the polarity when removing the capacitors. On ... opposite way around from the polarity marking on the board. Also ...
    Zorn Zorn January 2012 Hardware
  • BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…

    ... /> Pay careful attention to the polarity when removing the capacitors. On ... opposite way around from the polarity marking on the board. Also ...
    Marshall Marshall January 2012 Hardware
  • BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…

    ... Iss.3B has the added diode and capacitor wired 'in the ...
    roko roko January 2012 Hardware
  • Light gun compatibility with C64 and SMS.Hello all, I'm looking at light gun stuff on my old systems and wondered about how compatible the guns were across systems. I have the magnum Sincl…

    ... the same way, light sensitive diode in a gun casing, tiny ... to excite the light sensitive diode to measure how far down ...
    RobeeeJay RobeeeJay January 2012 Hardware
  • St Dragon (Kixx & MAX Compilation)Hi folks, This title has been doing my nut in for years, and I wondered if anyone knew how to make a working TZX. [url]http://dl.dropbox.com/u/15363…

    ... the latest values, forcing a polarity several times, why? For example ... 't be of the opposite polarity. Or am I wrong?
    lfaria lfaria January 2012 MIA/STP/SDP
  • Use a +2/+3 case as a replacement keyboard for 48KI was just wondering if a 48K Spectrum motherboard could be housed in a +3 case, and somehow the keyboard be connected so that it could have a proper…

    ... I'll leave working out diode logic to you :p
    guesser guesser January 2012 Hardware
  • New interface for ZXThis is my old (2004) unfinished project of internal interface for ZX Spectrum 128+2: ([url]http://velesoft.speccy.cz/hardware_in_development.htm[/u…

    ... sockets + some small changes (remove diode D27, cut wire)
    [img ...
    velesoft velesoft February 2012 Hardware
  • Colour blocks on displayHi all, I have just acquired another Sinclair product, my first one being a C5, it's a 48K ZX Spectrum. It shows colour blocks on the display when p…

    ... have failed. Carefully note the polarity of C46 if you change ...
    Zorn Zorn February 2012 Hardware
  • The missing poly quizAnyone know whats missing out of these poly inners? [url=http://postimage.org/image/m03464fij/][img]http://s17.postimage.org/m03464fij/IMG_9413.jpg[…

    ... PSU also had a red polarity strip along the cable rather ...
    kphair kphair February 2012 Sinclair Miscellaneous
  • divIDE x Spectrum clonesAnyone has a Spectrum clone and did a test with divIDE? Here in Brazil we have 2 Spectrum clones (TK90X and TK95) that are almost 95-99% compatible w…

    ... A15 from Z80CPU to keyboard diode D9. Keys "SPACE, SYMBOL, M ...
    velesoft velesoft February 2012 Hardware
  • Loading .tzx files into my Speccie... please help!Hello everyone! First off: I was there when the Spectrum came out. I was 7 :-D Favourite game (at age 8 or so): Atic Atac. And the weird thing is, W…

    ... right signal cancels the left. Polarity of hi/lo is nullified ...
    FrankT FrankT February 2012 Hardware
  • Loading .tzx files into my Speccie... please help!Hello everyone! First off: I was there when the Spectrum came out. I was 7 :-D Favourite game (at age 8 or so): Atic Atac. And the weird thing is, W…

    ... right signal cancels the left. Polarity of hi/lo is nullified ...
    guesser guesser February 2012 Hardware
  • Using a Spectrum Plus 2 Gray in the USBelieve the gray has what's called a SCART video output, so would something like [URL="http://www.amazon.co.uk/EasyCAP-Video-Audio-Capture-Card/dp/B0…

    ... powered the +2 OK? The polarity MUST BE CORRECT or you ...
    MrCheese MrCheese February 2012 Hardware
  • Using a Spectrum Plus 2 Gray in the USBelieve the gray has what's called a SCART video output, so would something like [URL="http://www.amazon.co.uk/EasyCAP-Video-Audio-Capture-Card/dp/B0…

    ... powered the +2 OK? The polarity MUST BE CORRECT or you ...
    jegs2 jegs2 February 2012 Hardware
  • Using a Spectrum Plus 2 Gray in the USBelieve the gray has what's called a SCART video output, so would something like [URL="http://www.amazon.co.uk/EasyCAP-Video-Audio-Capture-Card/dp/B0…

    ... negative. Like MrCheese said, inverted polarity will fry the Speccy. Also ...
    unholy unholy February 2012 Hardware
<1…19202122232425…34>

Latest Posts

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