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  • PSU unit spectrum 128k +2b 6 pinout DINHello everybody! I have spectrum 128k +2B but I don't have the 6 pin PSU and I can't find it anywhere. Can you anyone tell me where can I buy this PS…

    [QUOTE=groove;426515]But the +12V of the PC PSU works @ ... ?
    Spectrum actually works with +12V @ 0.7A and +5V@ 2A ...
    guesser guesser February 2010 Hardware
  • Spectrum 128+ (No TV picture)I got a Spectrum 128+ which is not generating any picture. I checked the TEA2000, and it gets not 12 Volt, but only 1.4, so this is the problem, I gu…

    ... and 9V are all okay, -12V is in reality +11.4 ... /> A repaired one +128K without +12V and I had to change ...
    Jose_Leandro Jose_Leandro March 2010 Hardware
  • Someone can help me to fix my Zx Spectrum?I did a video about the startup: [url]http://dl.dropbox.com/u/1566495/ZXSPECTRUM03.mp4[/url] I have replaced the ULA with a working one (same proble…

    ... -5V, Pin 8 should be +12V, Pin 9 should be +5V ... . If -5V or -12V are absent or much lower ...
    RST#08 RST#08 March 2010 Hardware
  • Someone can help me to fix my Zx Spectrum?I did a video about the startup: [url]http://dl.dropbox.com/u/1566495/ZXSPECTRUM03.mp4[/url] I have replaced the ULA with a working one (same proble…

    [QUOTE=gibs;431121]... 4/ how to check TR4/TR5 ?[/QUOTE]
    When -5V and +12V (at 4116) are present then both transistors work OK. So you checked already.
    roko roko March 2010 Hardware
  • Crappy video in +2B/+3Maybe it's not a failure in my ZX Spectrum, but I need some advice... I've got some spectrums (a ZX Spectrum +, two spanish ZX Spectrum +2B and a mo…

    ... 5V en lugar de a 12V
    - A?ade un condensador ... colector to 5V instead of 12V
    - Add a capacitor of ...
    mcleod_ideafix mcleod_ideafix March 2010 Hardware
  • Crappy video in +2B/+3Maybe it's not a failure in my ZX Spectrum, but I need some advice... I've got some spectrums (a ZX Spectrum +, two spanish ZX Spectrum +2B and a mo…

    ... 5V en lugar de a 12V
    - A?ade un condensador ... colector to 5V instead of 12V
    - Add a capacitor of ... other mod is connected to +12v. Would help connecting to TEA2000 ...
    Zup Zup March 2010 Hardware
  • Midi out on a ZX SpectrumYears ago (may be over 15 years...) I soldered a small adapter that lets a keyboard or synthesizer connect to the ZX Spectrum 128K's midi/RS232 port.…

    ... the circuits that requires 12v, check that the 12v line from the ...
    guesser guesser March 2010 Hardware
  • Midi out on a ZX SpectrumYears ago (may be over 15 years...) I soldered a small adapter that lets a keyboard or synthesizer connect to the ZX Spectrum 128K's midi/RS232 port.…

    ... the circuits that requires 12v, check that the 12v line from the ... !
    It is not the 12V that is missing but the ... -12V... I am using a small ... power connector also has a -12V line...

    So, other ...
    bverstee bverstee March 2010 Hardware
  • Midi out on a ZX SpectrumYears ago (may be over 15 years...) I soldered a small adapter that lets a keyboard or synthesizer connect to the ZX Spectrum 128K's midi/RS232 port.…

    ... it wouldn't have the -12V required for the serial ports ...
    zxbruno zxbruno March 2010 Hardware
  • +3 broken with broken disk drive.Ok, so today at a car boot sale I picked up a Spectrum +3 for ?5. It's in good condition, powers up and works well. However, the disk drive does not…

    ... probably, but also, check the 12v of the PSU.

    xc8 xc8 March 2010 Sinclair Miscellaneous
  • Broken or upgraded ZX Spectrum 48kHello First i want to say hello to everybody. I have a new ZX Spectrum 48k in my collection. Seller said that it is broken (no picture). I have this…

    ... is 10,6V should be 12V

    None of the ...
    gottrek gottrek April 2010 Hardware
  • Broken or upgraded ZX Spectrum 48kHello First i want to say hello to everybody. I have a new ZX Spectrum 48k in my collection. Seller said that it is broken (no picture). I have this…

    ... , and the supply voltage for +12V indicated above, is definately sufficient ...
    RetroTechie RetroTechie April 2010 Hardware
  • Trying to fix Spectrum Issue TwoHello everybody, I bought from eBay three Spectrums - one is Issue Two and the other two are Issue 3. The Issues 3s look like they are working but t…

    ... the coil is buzzing. The +12v is now good (can't ...
    Valentin Valentin April 2010 Hardware
  • component out?I would like to connect ZX48K to plasma TV with component cable. I read somewhere that signals are on the expansion edge connector. Do I need somethi…

    ... Out without the need of +12v.
    Valentin Valentin April 2010 Hardware
  • component out?I would like to connect ZX48K to plasma TV with component cable. I read somewhere that signals are on the expansion edge connector. Do I need somethi…

    ... Out without the need of +12v.[/QUOTE]Use the S-video ...
    -Micky -Micky April 2010 Hardware
  • component out?I would like to connect ZX48K to plasma TV with component cable. I read somewhere that signals are on the expansion edge connector. Do I need somethi…

    ... use an external PSU for +12v as well as for +5v ...
    Valentin Valentin April 2010 Hardware
  • My Spectrum has gone a bit dud since doing some Mods, HELPMy father in law and I did some modifications to my 48K rubber key Spectrum last weekend, and now it seems to be very keen to crash, especially when …

    ... a little harder to produce +12v for the DRAM and video ...
    RST#08 RST#08 April 2010 Hardware
  • Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky

    Speccy needs +12v for LM 1889 which is ... YPbPr converter.

    Then, +12v are used by the first ...
    Valentin Valentin April 2010 Hardware
  • Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky

    [QUOTE=Valentin;439521]Speccy needs +12v for LM 1889 which is ... YPbPr converter.

    Then, +12v are used by the first ...
    -Micky -Micky April 2010 Hardware
  • Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky

    [QUOTE=Valentin;439521]Speccy needs +12v for LM 1889 which is ...
    RetroTechie RetroTechie April 2010 Hardware
  • Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky

    ... negate the need for the 12v supply circuitry can possibly cause ...
    alien8r33d alien8r33d April 2010 Hardware
  • Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky

    ... negate the need for the 12v supply circuitry can possibly cause ... input is already around 11~12V if you're using the ...
    RetroTechie RetroTechie April 2010 Hardware
  • Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky

    ... acts as filter for the ~12V video DC supply, and extra ...
    RetroTechie RetroTechie April 2010 Hardware
  • Alternative speccy power supplysI know all us would have our speccys with the original power supply,but often i would see a distress call from people who got speccy from ebay but on…

    ... three voltages (+12, +5 and -12v), and you'll have enough ...
    Zup Zup May 2010 Hardware
  • Electronics Help!I've brought a little universal amplifier from Maplins which is to go into the arcade machine I have, so power its speaker from the computers line ou…

    ... need a nice clean DC 12V at 800mA for this to ...
    bleugh bleugh May 2010 Chit chat
  • Electronics Help!I've brought a little universal amplifier from Maplins which is to go into the arcade machine I have, so power its speaker from the computers line ou…

    ... using regulated?. If unregulated, a 12V supply could easily have exceeded ...
    alien8r33d alien8r33d May 2010 Chit chat
  • Electronics Help!I've brought a little universal amplifier from Maplins which is to go into the arcade machine I have, so power its speaker from the computers line ou…

    ... have tried it with the 12v psu in the photo, and ...
    alien8r33d alien8r33d May 2010 Chit chat
  • Electronics Help!I've brought a little universal amplifier from Maplins which is to go into the arcade machine I have, so power its speaker from the computers line ou…

    ... have tried it with the 12v psu in the photo, and ...
    Scottie_uk Scottie_uk May 2010 Chit chat
  • +3 ProblemsI have been having a few problems with my +3 and I am wondering if anyone can help or give me some advice: 1. I have 2 blank disks which I have save…

    ... your problem. You could feed 12v through the scart connector, as ...
    Zup Zup May 2010 Hardware
  • +3 ProblemsI have been having a few problems with my +3 and I am wondering if anyone can help or give me some advice: 1. I have 2 blank disks which I have save…

    ... says the problem is that +12V on +3 RGB connector are ...
    orange orange May 2010 Hardware
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